| 1 | /* |
| 2 | * fs/f2fs/f2fs.h |
| 3 | * |
| 4 | * Copyright (c) 2012 Samsung Electronics Co., Ltd. |
| 5 | * http://www.samsung.com/ |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License version 2 as |
| 9 | * published by the Free Software Foundation. |
| 10 | */ |
| 11 | #ifndef _LINUX_F2FS_H |
| 12 | #define _LINUX_F2FS_H |
| 13 | |
| 14 | #include <linux/types.h> |
| 15 | #include <linux/page-flags.h> |
| 16 | #include <linux/buffer_head.h> |
| 17 | #include <linux/slab.h> |
| 18 | #include <linux/crc32.h> |
| 19 | #include <linux/magic.h> |
| 20 | #include <linux/kobject.h> |
| 21 | #include <linux/sched.h> |
| 22 | #include <linux/vmalloc.h> |
| 23 | #include <linux/bio.h> |
| 24 | #include <linux/blkdev.h> |
| 25 | #include <linux/quotaops.h> |
| 26 | #ifdef CONFIG_F2FS_FS_ENCRYPTION |
| 27 | #include <linux/fscrypt_supp.h> |
| 28 | #else |
| 29 | #include <linux/fscrypt_notsupp.h> |
| 30 | #endif |
| 31 | #include <crypto/hash.h> |
| 32 | #include <linux/writeback.h> |
| 33 | |
| 34 | #ifdef CONFIG_F2FS_CHECK_FS |
| 35 | #define f2fs_bug_on(sbi, condition) BUG_ON(condition) |
| 36 | #else |
| 37 | #define f2fs_bug_on(sbi, condition) \ |
| 38 | do { \ |
| 39 | if (unlikely(condition)) { \ |
| 40 | WARN_ON(1); \ |
| 41 | set_sbi_flag(sbi, SBI_NEED_FSCK); \ |
| 42 | } \ |
| 43 | } while (0) |
| 44 | #endif |
| 45 | |
| 46 | #ifdef CONFIG_F2FS_FAULT_INJECTION |
| 47 | enum { |
| 48 | FAULT_KMALLOC, |
| 49 | FAULT_PAGE_ALLOC, |
| 50 | FAULT_PAGE_GET, |
| 51 | FAULT_ALLOC_BIO, |
| 52 | FAULT_ALLOC_NID, |
| 53 | FAULT_ORPHAN, |
| 54 | FAULT_BLOCK, |
| 55 | FAULT_DIR_DEPTH, |
| 56 | FAULT_EVICT_INODE, |
| 57 | FAULT_TRUNCATE, |
| 58 | FAULT_IO, |
| 59 | FAULT_CHECKPOINT, |
| 60 | FAULT_MAX, |
| 61 | }; |
| 62 | |
| 63 | struct f2fs_fault_info { |
| 64 | atomic_t inject_ops; |
| 65 | unsigned int inject_rate; |
| 66 | unsigned int inject_type; |
| 67 | }; |
| 68 | |
| 69 | extern char *fault_name[FAULT_MAX]; |
| 70 | #define IS_FAULT_SET(fi, type) ((fi)->inject_type & (1 << (type))) |
| 71 | #endif |
| 72 | |
| 73 | /* |
| 74 | * For mount options |
| 75 | */ |
| 76 | #define F2FS_MOUNT_BG_GC 0x00000001 |
| 77 | #define F2FS_MOUNT_DISABLE_ROLL_FORWARD 0x00000002 |
| 78 | #define F2FS_MOUNT_DISCARD 0x00000004 |
| 79 | #define F2FS_MOUNT_NOHEAP 0x00000008 |
| 80 | #define F2FS_MOUNT_XATTR_USER 0x00000010 |
| 81 | #define F2FS_MOUNT_POSIX_ACL 0x00000020 |
| 82 | #define F2FS_MOUNT_DISABLE_EXT_IDENTIFY 0x00000040 |
| 83 | #define F2FS_MOUNT_INLINE_XATTR 0x00000080 |
| 84 | #define F2FS_MOUNT_INLINE_DATA 0x00000100 |
| 85 | #define F2FS_MOUNT_INLINE_DENTRY 0x00000200 |
| 86 | #define F2FS_MOUNT_FLUSH_MERGE 0x00000400 |
| 87 | #define F2FS_MOUNT_NOBARRIER 0x00000800 |
| 88 | #define F2FS_MOUNT_FASTBOOT 0x00001000 |
| 89 | #define F2FS_MOUNT_EXTENT_CACHE 0x00002000 |
| 90 | #define F2FS_MOUNT_FORCE_FG_GC 0x00004000 |
| 91 | #define F2FS_MOUNT_DATA_FLUSH 0x00008000 |
| 92 | #define F2FS_MOUNT_FAULT_INJECTION 0x00010000 |
| 93 | #define F2FS_MOUNT_ADAPTIVE 0x00020000 |
| 94 | #define F2FS_MOUNT_LFS 0x00040000 |
| 95 | #define F2FS_MOUNT_USRQUOTA 0x00080000 |
| 96 | #define F2FS_MOUNT_GRPQUOTA 0x00100000 |
| 97 | #define F2FS_MOUNT_PRJQUOTA 0x00200000 |
| 98 | #define F2FS_MOUNT_QUOTA 0x00400000 |
| 99 | #define F2FS_MOUNT_INLINE_XATTR_SIZE 0x00800000 |
| 100 | |
| 101 | #define clear_opt(sbi, option) ((sbi)->mount_opt.opt &= ~F2FS_MOUNT_##option) |
| 102 | #define set_opt(sbi, option) ((sbi)->mount_opt.opt |= F2FS_MOUNT_##option) |
| 103 | #define test_opt(sbi, option) ((sbi)->mount_opt.opt & F2FS_MOUNT_##option) |
| 104 | |
| 105 | #define ver_after(a, b) (typecheck(unsigned long long, a) && \ |
| 106 | typecheck(unsigned long long, b) && \ |
| 107 | ((long long)((a) - (b)) > 0)) |
| 108 | |
| 109 | typedef u32 block_t; /* |
| 110 | * should not change u32, since it is the on-disk block |
| 111 | * address format, __le32. |
| 112 | */ |
| 113 | typedef u32 nid_t; |
| 114 | |
| 115 | struct f2fs_mount_info { |
| 116 | unsigned int opt; |
| 117 | }; |
| 118 | |
| 119 | #define F2FS_FEATURE_ENCRYPT 0x0001 |
| 120 | #define F2FS_FEATURE_BLKZONED 0x0002 |
| 121 | #define F2FS_FEATURE_ATOMIC_WRITE 0x0004 |
| 122 | #define F2FS_FEATURE_EXTRA_ATTR 0x0008 |
| 123 | #define F2FS_FEATURE_PRJQUOTA 0x0010 |
| 124 | #define F2FS_FEATURE_INODE_CHKSUM 0x0020 |
| 125 | #define F2FS_FEATURE_FLEXIBLE_INLINE_XATTR 0x0040 |
| 126 | #define F2FS_FEATURE_QUOTA_INO 0x0080 |
| 127 | |
| 128 | #define F2FS_HAS_FEATURE(sb, mask) \ |
| 129 | ((F2FS_SB(sb)->raw_super->feature & cpu_to_le32(mask)) != 0) |
| 130 | #define F2FS_SET_FEATURE(sb, mask) \ |
| 131 | (F2FS_SB(sb)->raw_super->feature |= cpu_to_le32(mask)) |
| 132 | #define F2FS_CLEAR_FEATURE(sb, mask) \ |
| 133 | (F2FS_SB(sb)->raw_super->feature &= ~cpu_to_le32(mask)) |
| 134 | |
| 135 | /* bio stuffs */ |
| 136 | #define REQ_OP_READ READ |
| 137 | #define REQ_OP_WRITE WRITE |
| 138 | #define bio_op(bio) ((bio)->bi_rw & 1) |
| 139 | |
| 140 | static inline void bio_set_op_attrs(struct bio *bio, unsigned op, |
| 141 | unsigned op_flags) |
| 142 | { |
| 143 | bio->bi_rw = op | op_flags; |
| 144 | } |
| 145 | |
| 146 | static inline int wbc_to_write_flags(struct writeback_control *wbc) |
| 147 | { |
| 148 | if (wbc->sync_mode == WB_SYNC_ALL) |
| 149 | return REQ_SYNC | REQ_NOIDLE; |
| 150 | return 0; |
| 151 | } |
| 152 | |
| 153 | /** |
| 154 | * wq_has_sleeper - check if there are any waiting processes |
| 155 | * @wq: wait queue head |
| 156 | * |
| 157 | * Returns true if wq has waiting processes |
| 158 | * |
| 159 | * Please refer to the comment for waitqueue_active. |
| 160 | */ |
| 161 | static inline bool wq_has_sleeper(wait_queue_head_t *wq) |
| 162 | { |
| 163 | /* |
| 164 | * We need to be sure we are in sync with the |
| 165 | * add_wait_queue modifications to the wait queue. |
| 166 | * |
| 167 | * This memory barrier should be paired with one on the |
| 168 | * waiting side. |
| 169 | */ |
| 170 | smp_mb(); |
| 171 | return waitqueue_active(wq); |
| 172 | } |
| 173 | |
| 174 | static inline void inode_nohighmem(struct inode *inode) |
| 175 | { |
| 176 | mapping_set_gfp_mask(inode->i_mapping, GFP_USER); |
| 177 | } |
| 178 | |
| 179 | /** |
| 180 | * current_time - Return FS time |
| 181 | * @inode: inode. |
| 182 | * |
| 183 | * Return the current time truncated to the time granularity supported by |
| 184 | * the fs. |
| 185 | * |
| 186 | * Note that inode and inode->sb cannot be NULL. |
| 187 | * Otherwise, the function warns and returns time without truncation. |
| 188 | */ |
| 189 | static inline struct timespec current_time(struct inode *inode) |
| 190 | { |
| 191 | struct timespec now = current_kernel_time(); |
| 192 | |
| 193 | if (unlikely(!inode->i_sb)) { |
| 194 | WARN(1, "current_time() called with uninitialized super_block in the inode"); |
| 195 | return now; |
| 196 | } |
| 197 | |
| 198 | return timespec_trunc(now, inode->i_sb->s_time_gran); |
| 199 | } |
| 200 | |
| 201 | /* |
| 202 | * For checkpoint manager |
| 203 | */ |
| 204 | enum { |
| 205 | NAT_BITMAP, |
| 206 | SIT_BITMAP |
| 207 | }; |
| 208 | |
| 209 | #define CP_UMOUNT 0x00000001 |
| 210 | #define CP_FASTBOOT 0x00000002 |
| 211 | #define CP_SYNC 0x00000004 |
| 212 | #define CP_RECOVERY 0x00000008 |
| 213 | #define CP_DISCARD 0x00000010 |
| 214 | #define CP_TRIMMED 0x00000020 |
| 215 | |
| 216 | #define DEF_BATCHED_TRIM_SECTIONS 2048 |
| 217 | #define BATCHED_TRIM_SEGMENTS(sbi) \ |
| 218 | (GET_SEG_FROM_SEC(sbi, SM_I(sbi)->trim_sections)) |
| 219 | #define BATCHED_TRIM_BLOCKS(sbi) \ |
| 220 | (BATCHED_TRIM_SEGMENTS(sbi) << (sbi)->log_blocks_per_seg) |
| 221 | #define MAX_DISCARD_BLOCKS(sbi) BLKS_PER_SEC(sbi) |
| 222 | #define DEF_MAX_DISCARD_REQUEST 8 /* issue 8 discards per round */ |
| 223 | #define DEF_MIN_DISCARD_ISSUE_TIME 50 /* 50 ms, if exists */ |
| 224 | #define DEF_MAX_DISCARD_ISSUE_TIME 60000 /* 60 s, if no candidates */ |
| 225 | #define DEF_CP_INTERVAL 60 /* 60 secs */ |
| 226 | #define DEF_IDLE_INTERVAL 5 /* 5 secs */ |
| 227 | |
| 228 | struct cp_control { |
| 229 | int reason; |
| 230 | __u64 trim_start; |
| 231 | __u64 trim_end; |
| 232 | __u64 trim_minlen; |
| 233 | }; |
| 234 | |
| 235 | /* |
| 236 | * For CP/NAT/SIT/SSA readahead |
| 237 | */ |
| 238 | enum { |
| 239 | META_CP, |
| 240 | META_NAT, |
| 241 | META_SIT, |
| 242 | META_SSA, |
| 243 | META_POR, |
| 244 | }; |
| 245 | |
| 246 | /* for the list of ino */ |
| 247 | enum { |
| 248 | ORPHAN_INO, /* for orphan ino list */ |
| 249 | APPEND_INO, /* for append ino list */ |
| 250 | UPDATE_INO, /* for update ino list */ |
| 251 | FLUSH_INO, /* for multiple device flushing */ |
| 252 | MAX_INO_ENTRY, /* max. list */ |
| 253 | }; |
| 254 | |
| 255 | struct ino_entry { |
| 256 | struct list_head list; /* list head */ |
| 257 | nid_t ino; /* inode number */ |
| 258 | unsigned int dirty_device; /* dirty device bitmap */ |
| 259 | }; |
| 260 | |
| 261 | /* for the list of inodes to be GCed */ |
| 262 | struct inode_entry { |
| 263 | struct list_head list; /* list head */ |
| 264 | struct inode *inode; /* vfs inode pointer */ |
| 265 | }; |
| 266 | |
| 267 | /* for the bitmap indicate blocks to be discarded */ |
| 268 | struct discard_entry { |
| 269 | struct list_head list; /* list head */ |
| 270 | block_t start_blkaddr; /* start blockaddr of current segment */ |
| 271 | unsigned char discard_map[SIT_VBLOCK_MAP_SIZE]; /* segment discard bitmap */ |
| 272 | }; |
| 273 | |
| 274 | /* default discard granularity of inner discard thread, unit: block count */ |
| 275 | #define DEFAULT_DISCARD_GRANULARITY 16 |
| 276 | |
| 277 | /* max discard pend list number */ |
| 278 | #define MAX_PLIST_NUM 512 |
| 279 | #define plist_idx(blk_num) ((blk_num) >= MAX_PLIST_NUM ? \ |
| 280 | (MAX_PLIST_NUM - 1) : (blk_num - 1)) |
| 281 | |
| 282 | enum { |
| 283 | D_PREP, |
| 284 | D_SUBMIT, |
| 285 | D_DONE, |
| 286 | }; |
| 287 | |
| 288 | struct discard_info { |
| 289 | block_t lstart; /* logical start address */ |
| 290 | block_t len; /* length */ |
| 291 | block_t start; /* actual start address in dev */ |
| 292 | }; |
| 293 | |
| 294 | struct discard_cmd { |
| 295 | struct rb_node rb_node; /* rb node located in rb-tree */ |
| 296 | union { |
| 297 | struct { |
| 298 | block_t lstart; /* logical start address */ |
| 299 | block_t len; /* length */ |
| 300 | block_t start; /* actual start address in dev */ |
| 301 | }; |
| 302 | struct discard_info di; /* discard info */ |
| 303 | |
| 304 | }; |
| 305 | struct list_head list; /* command list */ |
| 306 | struct completion wait; /* compleation */ |
| 307 | struct block_device *bdev; /* bdev */ |
| 308 | unsigned short ref; /* reference count */ |
| 309 | unsigned char state; /* state */ |
| 310 | int error; /* bio error */ |
| 311 | }; |
| 312 | |
| 313 | enum { |
| 314 | DPOLICY_BG, |
| 315 | DPOLICY_FORCE, |
| 316 | DPOLICY_FSTRIM, |
| 317 | DPOLICY_UMOUNT, |
| 318 | MAX_DPOLICY, |
| 319 | }; |
| 320 | |
| 321 | struct discard_policy { |
| 322 | int type; /* type of discard */ |
| 323 | unsigned int min_interval; /* used for candidates exist */ |
| 324 | unsigned int max_interval; /* used for candidates not exist */ |
| 325 | unsigned int max_requests; /* # of discards issued per round */ |
| 326 | unsigned int io_aware_gran; /* minimum granularity discard not be aware of I/O */ |
| 327 | bool io_aware; /* issue discard in idle time */ |
| 328 | bool sync; /* submit discard with REQ_SYNC flag */ |
| 329 | unsigned int granularity; /* discard granularity */ |
| 330 | }; |
| 331 | |
| 332 | struct discard_cmd_control { |
| 333 | struct task_struct *f2fs_issue_discard; /* discard thread */ |
| 334 | struct list_head entry_list; /* 4KB discard entry list */ |
| 335 | struct list_head pend_list[MAX_PLIST_NUM];/* store pending entries */ |
| 336 | unsigned char pend_list_tag[MAX_PLIST_NUM];/* tag for pending entries */ |
| 337 | struct list_head wait_list; /* store on-flushing entries */ |
| 338 | struct list_head fstrim_list; /* in-flight discard from fstrim */ |
| 339 | wait_queue_head_t discard_wait_queue; /* waiting queue for wake-up */ |
| 340 | unsigned int discard_wake; /* to wake up discard thread */ |
| 341 | struct mutex cmd_lock; |
| 342 | unsigned int nr_discards; /* # of discards in the list */ |
| 343 | unsigned int max_discards; /* max. discards to be issued */ |
| 344 | unsigned int discard_granularity; /* discard granularity */ |
| 345 | unsigned int undiscard_blks; /* # of undiscard blocks */ |
| 346 | atomic_t issued_discard; /* # of issued discard */ |
| 347 | atomic_t issing_discard; /* # of issing discard */ |
| 348 | atomic_t discard_cmd_cnt; /* # of cached cmd count */ |
| 349 | struct rb_root root; /* root of discard rb-tree */ |
| 350 | }; |
| 351 | |
| 352 | /* for the list of fsync inodes, used only during recovery */ |
| 353 | struct fsync_inode_entry { |
| 354 | struct list_head list; /* list head */ |
| 355 | struct inode *inode; /* vfs inode pointer */ |
| 356 | block_t blkaddr; /* block address locating the last fsync */ |
| 357 | block_t last_dentry; /* block address locating the last dentry */ |
| 358 | }; |
| 359 | |
| 360 | #define nats_in_cursum(jnl) (le16_to_cpu((jnl)->n_nats)) |
| 361 | #define sits_in_cursum(jnl) (le16_to_cpu((jnl)->n_sits)) |
| 362 | |
| 363 | #define nat_in_journal(jnl, i) ((jnl)->nat_j.entries[i].ne) |
| 364 | #define nid_in_journal(jnl, i) ((jnl)->nat_j.entries[i].nid) |
| 365 | #define sit_in_journal(jnl, i) ((jnl)->sit_j.entries[i].se) |
| 366 | #define segno_in_journal(jnl, i) ((jnl)->sit_j.entries[i].segno) |
| 367 | |
| 368 | #define MAX_NAT_JENTRIES(jnl) (NAT_JOURNAL_ENTRIES - nats_in_cursum(jnl)) |
| 369 | #define MAX_SIT_JENTRIES(jnl) (SIT_JOURNAL_ENTRIES - sits_in_cursum(jnl)) |
| 370 | |
| 371 | static inline int update_nats_in_cursum(struct f2fs_journal *journal, int i) |
| 372 | { |
| 373 | int before = nats_in_cursum(journal); |
| 374 | |
| 375 | journal->n_nats = cpu_to_le16(before + i); |
| 376 | return before; |
| 377 | } |
| 378 | |
| 379 | static inline int update_sits_in_cursum(struct f2fs_journal *journal, int i) |
| 380 | { |
| 381 | int before = sits_in_cursum(journal); |
| 382 | |
| 383 | journal->n_sits = cpu_to_le16(before + i); |
| 384 | return before; |
| 385 | } |
| 386 | |
| 387 | static inline bool __has_cursum_space(struct f2fs_journal *journal, |
| 388 | int size, int type) |
| 389 | { |
| 390 | if (type == NAT_JOURNAL) |
| 391 | return size <= MAX_NAT_JENTRIES(journal); |
| 392 | return size <= MAX_SIT_JENTRIES(journal); |
| 393 | } |
| 394 | |
| 395 | /* |
| 396 | * ioctl commands |
| 397 | */ |
| 398 | #define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS |
| 399 | #define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS |
| 400 | #define F2FS_IOC_GETVERSION FS_IOC_GETVERSION |
| 401 | |
| 402 | #define F2FS_IOCTL_MAGIC 0xf5 |
| 403 | #define F2FS_IOC_START_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 1) |
| 404 | #define F2FS_IOC_COMMIT_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 2) |
| 405 | #define F2FS_IOC_START_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 3) |
| 406 | #define F2FS_IOC_RELEASE_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 4) |
| 407 | #define F2FS_IOC_ABORT_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 5) |
| 408 | #define F2FS_IOC_GARBAGE_COLLECT _IOW(F2FS_IOCTL_MAGIC, 6, __u32) |
| 409 | #define F2FS_IOC_WRITE_CHECKPOINT _IO(F2FS_IOCTL_MAGIC, 7) |
| 410 | #define F2FS_IOC_DEFRAGMENT _IOWR(F2FS_IOCTL_MAGIC, 8, \ |
| 411 | struct f2fs_defragment) |
| 412 | #define F2FS_IOC_MOVE_RANGE _IOWR(F2FS_IOCTL_MAGIC, 9, \ |
| 413 | struct f2fs_move_range) |
| 414 | #define F2FS_IOC_FLUSH_DEVICE _IOW(F2FS_IOCTL_MAGIC, 10, \ |
| 415 | struct f2fs_flush_device) |
| 416 | #define F2FS_IOC_GARBAGE_COLLECT_RANGE _IOW(F2FS_IOCTL_MAGIC, 11, \ |
| 417 | struct f2fs_gc_range) |
| 418 | #define F2FS_IOC_GET_FEATURES _IOR(F2FS_IOCTL_MAGIC, 12, __u32) |
| 419 | |
| 420 | #define F2FS_IOC_SET_ENCRYPTION_POLICY FS_IOC_SET_ENCRYPTION_POLICY |
| 421 | #define F2FS_IOC_GET_ENCRYPTION_POLICY FS_IOC_GET_ENCRYPTION_POLICY |
| 422 | #define F2FS_IOC_GET_ENCRYPTION_PWSALT FS_IOC_GET_ENCRYPTION_PWSALT |
| 423 | |
| 424 | /* |
| 425 | * should be same as XFS_IOC_GOINGDOWN. |
| 426 | * Flags for going down operation used by FS_IOC_GOINGDOWN |
| 427 | */ |
| 428 | #define F2FS_IOC_SHUTDOWN _IOR('X', 125, __u32) /* Shutdown */ |
| 429 | #define F2FS_GOING_DOWN_FULLSYNC 0x0 /* going down with full sync */ |
| 430 | #define F2FS_GOING_DOWN_METASYNC 0x1 /* going down with metadata */ |
| 431 | #define F2FS_GOING_DOWN_NOSYNC 0x2 /* going down */ |
| 432 | #define F2FS_GOING_DOWN_METAFLUSH 0x3 /* going down with meta flush */ |
| 433 | |
| 434 | #if defined(__KERNEL__) && defined(CONFIG_COMPAT) |
| 435 | /* |
| 436 | * ioctl commands in 32 bit emulation |
| 437 | */ |
| 438 | #define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS |
| 439 | #define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS |
| 440 | #define F2FS_IOC32_GETVERSION FS_IOC32_GETVERSION |
| 441 | #endif |
| 442 | |
| 443 | struct f2fs_gc_range { |
| 444 | u32 sync; |
| 445 | u64 start; |
| 446 | u64 len; |
| 447 | }; |
| 448 | |
| 449 | struct f2fs_defragment { |
| 450 | u64 start; |
| 451 | u64 len; |
| 452 | }; |
| 453 | |
| 454 | struct f2fs_move_range { |
| 455 | u32 dst_fd; /* destination fd */ |
| 456 | u64 pos_in; /* start position in src_fd */ |
| 457 | u64 pos_out; /* start position in dst_fd */ |
| 458 | u64 len; /* size to move */ |
| 459 | }; |
| 460 | |
| 461 | struct f2fs_flush_device { |
| 462 | u32 dev_num; /* device number to flush */ |
| 463 | u32 segments; /* # of segments to flush */ |
| 464 | }; |
| 465 | |
| 466 | /* for inline stuff */ |
| 467 | #define DEF_INLINE_RESERVED_SIZE 1 |
| 468 | #define DEF_MIN_INLINE_SIZE 1 |
| 469 | static inline int get_extra_isize(struct inode *inode); |
| 470 | static inline int get_inline_xattr_addrs(struct inode *inode); |
| 471 | #define F2FS_INLINE_XATTR_ADDRS(inode) get_inline_xattr_addrs(inode) |
| 472 | #define MAX_INLINE_DATA(inode) (sizeof(__le32) * \ |
| 473 | (CUR_ADDRS_PER_INODE(inode) - \ |
| 474 | F2FS_INLINE_XATTR_ADDRS(inode) - \ |
| 475 | DEF_INLINE_RESERVED_SIZE)) |
| 476 | |
| 477 | /* for inline dir */ |
| 478 | #define NR_INLINE_DENTRY(inode) (MAX_INLINE_DATA(inode) * BITS_PER_BYTE / \ |
| 479 | ((SIZE_OF_DIR_ENTRY + F2FS_SLOT_LEN) * \ |
| 480 | BITS_PER_BYTE + 1)) |
| 481 | #define INLINE_DENTRY_BITMAP_SIZE(inode) ((NR_INLINE_DENTRY(inode) + \ |
| 482 | BITS_PER_BYTE - 1) / BITS_PER_BYTE) |
| 483 | #define INLINE_RESERVED_SIZE(inode) (MAX_INLINE_DATA(inode) - \ |
| 484 | ((SIZE_OF_DIR_ENTRY + F2FS_SLOT_LEN) * \ |
| 485 | NR_INLINE_DENTRY(inode) + \ |
| 486 | INLINE_DENTRY_BITMAP_SIZE(inode))) |
| 487 | |
| 488 | /* |
| 489 | * For INODE and NODE manager |
| 490 | */ |
| 491 | /* for directory operations */ |
| 492 | struct f2fs_dentry_ptr { |
| 493 | struct inode *inode; |
| 494 | void *bitmap; |
| 495 | struct f2fs_dir_entry *dentry; |
| 496 | __u8 (*filename)[F2FS_SLOT_LEN]; |
| 497 | int max; |
| 498 | int nr_bitmap; |
| 499 | }; |
| 500 | |
| 501 | static inline void make_dentry_ptr_block(struct inode *inode, |
| 502 | struct f2fs_dentry_ptr *d, struct f2fs_dentry_block *t) |
| 503 | { |
| 504 | d->inode = inode; |
| 505 | d->max = NR_DENTRY_IN_BLOCK; |
| 506 | d->nr_bitmap = SIZE_OF_DENTRY_BITMAP; |
| 507 | d->bitmap = &t->dentry_bitmap; |
| 508 | d->dentry = t->dentry; |
| 509 | d->filename = t->filename; |
| 510 | } |
| 511 | |
| 512 | static inline void make_dentry_ptr_inline(struct inode *inode, |
| 513 | struct f2fs_dentry_ptr *d, void *t) |
| 514 | { |
| 515 | int entry_cnt = NR_INLINE_DENTRY(inode); |
| 516 | int bitmap_size = INLINE_DENTRY_BITMAP_SIZE(inode); |
| 517 | int reserved_size = INLINE_RESERVED_SIZE(inode); |
| 518 | |
| 519 | d->inode = inode; |
| 520 | d->max = entry_cnt; |
| 521 | d->nr_bitmap = bitmap_size; |
| 522 | d->bitmap = t; |
| 523 | d->dentry = t + bitmap_size + reserved_size; |
| 524 | d->filename = t + bitmap_size + reserved_size + |
| 525 | SIZE_OF_DIR_ENTRY * entry_cnt; |
| 526 | } |
| 527 | |
| 528 | /* |
| 529 | * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1 |
| 530 | * as its node offset to distinguish from index node blocks. |
| 531 | * But some bits are used to mark the node block. |
| 532 | */ |
| 533 | #define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \ |
| 534 | >> OFFSET_BIT_SHIFT) |
| 535 | enum { |
| 536 | ALLOC_NODE, /* allocate a new node page if needed */ |
| 537 | LOOKUP_NODE, /* look up a node without readahead */ |
| 538 | LOOKUP_NODE_RA, /* |
| 539 | * look up a node with readahead called |
| 540 | * by get_data_block. |
| 541 | */ |
| 542 | }; |
| 543 | |
| 544 | #define F2FS_LINK_MAX 0xffffffff /* maximum link count per file */ |
| 545 | |
| 546 | #define MAX_DIR_RA_PAGES 4 /* maximum ra pages of dir */ |
| 547 | |
| 548 | /* vector size for gang look-up from extent cache that consists of radix tree */ |
| 549 | #define EXT_TREE_VEC_SIZE 64 |
| 550 | |
| 551 | /* for in-memory extent cache entry */ |
| 552 | #define F2FS_MIN_EXTENT_LEN 64 /* minimum extent length */ |
| 553 | |
| 554 | /* number of extent info in extent cache we try to shrink */ |
| 555 | #define EXTENT_CACHE_SHRINK_NUMBER 128 |
| 556 | |
| 557 | struct rb_entry { |
| 558 | struct rb_node rb_node; /* rb node located in rb-tree */ |
| 559 | unsigned int ofs; /* start offset of the entry */ |
| 560 | unsigned int len; /* length of the entry */ |
| 561 | }; |
| 562 | |
| 563 | struct extent_info { |
| 564 | unsigned int fofs; /* start offset in a file */ |
| 565 | unsigned int len; /* length of the extent */ |
| 566 | u32 blk; /* start block address of the extent */ |
| 567 | }; |
| 568 | |
| 569 | struct extent_node { |
| 570 | struct rb_node rb_node; |
| 571 | union { |
| 572 | struct { |
| 573 | unsigned int fofs; |
| 574 | unsigned int len; |
| 575 | u32 blk; |
| 576 | }; |
| 577 | struct extent_info ei; /* extent info */ |
| 578 | |
| 579 | }; |
| 580 | struct list_head list; /* node in global extent list of sbi */ |
| 581 | struct extent_tree *et; /* extent tree pointer */ |
| 582 | }; |
| 583 | |
| 584 | struct extent_tree { |
| 585 | nid_t ino; /* inode number */ |
| 586 | struct rb_root root; /* root of extent info rb-tree */ |
| 587 | struct extent_node *cached_en; /* recently accessed extent node */ |
| 588 | struct extent_info largest; /* largested extent info */ |
| 589 | struct list_head list; /* to be used by sbi->zombie_list */ |
| 590 | rwlock_t lock; /* protect extent info rb-tree */ |
| 591 | atomic_t node_cnt; /* # of extent node in rb-tree*/ |
| 592 | }; |
| 593 | |
| 594 | /* |
| 595 | * This structure is taken from ext4_map_blocks. |
| 596 | * |
| 597 | * Note that, however, f2fs uses NEW and MAPPED flags for f2fs_map_blocks(). |
| 598 | */ |
| 599 | #define F2FS_MAP_NEW (1 << BH_New) |
| 600 | #define F2FS_MAP_MAPPED (1 << BH_Mapped) |
| 601 | #define F2FS_MAP_UNWRITTEN (1 << BH_Unwritten) |
| 602 | #define F2FS_MAP_FLAGS (F2FS_MAP_NEW | F2FS_MAP_MAPPED |\ |
| 603 | F2FS_MAP_UNWRITTEN) |
| 604 | |
| 605 | struct f2fs_map_blocks { |
| 606 | block_t m_pblk; |
| 607 | block_t m_lblk; |
| 608 | unsigned int m_len; |
| 609 | unsigned int m_flags; |
| 610 | pgoff_t *m_next_pgofs; /* point next possible non-hole pgofs */ |
| 611 | }; |
| 612 | |
| 613 | /* for flag in get_data_block */ |
| 614 | enum { |
| 615 | F2FS_GET_BLOCK_DEFAULT, |
| 616 | F2FS_GET_BLOCK_FIEMAP, |
| 617 | F2FS_GET_BLOCK_BMAP, |
| 618 | F2FS_GET_BLOCK_PRE_DIO, |
| 619 | F2FS_GET_BLOCK_PRE_AIO, |
| 620 | }; |
| 621 | |
| 622 | /* |
| 623 | * i_advise uses FADVISE_XXX_BIT. We can add additional hints later. |
| 624 | */ |
| 625 | #define FADVISE_COLD_BIT 0x01 |
| 626 | #define FADVISE_LOST_PINO_BIT 0x02 |
| 627 | #define FADVISE_ENCRYPT_BIT 0x04 |
| 628 | #define FADVISE_ENC_NAME_BIT 0x08 |
| 629 | #define FADVISE_KEEP_SIZE_BIT 0x10 |
| 630 | |
| 631 | #define file_is_cold(inode) is_file(inode, FADVISE_COLD_BIT) |
| 632 | #define file_wrong_pino(inode) is_file(inode, FADVISE_LOST_PINO_BIT) |
| 633 | #define file_set_cold(inode) set_file(inode, FADVISE_COLD_BIT) |
| 634 | #define file_lost_pino(inode) set_file(inode, FADVISE_LOST_PINO_BIT) |
| 635 | #define file_clear_cold(inode) clear_file(inode, FADVISE_COLD_BIT) |
| 636 | #define file_got_pino(inode) clear_file(inode, FADVISE_LOST_PINO_BIT) |
| 637 | #define file_is_encrypt(inode) is_file(inode, FADVISE_ENCRYPT_BIT) |
| 638 | #define file_set_encrypt(inode) set_file(inode, FADVISE_ENCRYPT_BIT) |
| 639 | #define file_clear_encrypt(inode) clear_file(inode, FADVISE_ENCRYPT_BIT) |
| 640 | #define file_enc_name(inode) is_file(inode, FADVISE_ENC_NAME_BIT) |
| 641 | #define file_set_enc_name(inode) set_file(inode, FADVISE_ENC_NAME_BIT) |
| 642 | #define file_keep_isize(inode) is_file(inode, FADVISE_KEEP_SIZE_BIT) |
| 643 | #define file_set_keep_isize(inode) set_file(inode, FADVISE_KEEP_SIZE_BIT) |
| 644 | |
| 645 | #define DEF_DIR_LEVEL 0 |
| 646 | |
| 647 | struct f2fs_inode_info { |
| 648 | struct inode vfs_inode; /* serve a vfs inode */ |
| 649 | unsigned long i_flags; /* keep an inode flags for ioctl */ |
| 650 | unsigned char i_advise; /* use to give file attribute hints */ |
| 651 | unsigned char i_dir_level; /* use for dentry level for large dir */ |
| 652 | unsigned int i_current_depth; /* use only in directory structure */ |
| 653 | unsigned int i_pino; /* parent inode number */ |
| 654 | umode_t i_acl_mode; /* keep file acl mode temporarily */ |
| 655 | |
| 656 | /* Use below internally in f2fs*/ |
| 657 | unsigned long flags; /* use to pass per-file flags */ |
| 658 | struct rw_semaphore i_sem; /* protect fi info */ |
| 659 | atomic_t dirty_pages; /* # of dirty pages */ |
| 660 | f2fs_hash_t chash; /* hash value of given file name */ |
| 661 | unsigned int clevel; /* maximum level of given file name */ |
| 662 | struct task_struct *task; /* lookup and create consistency */ |
| 663 | struct task_struct *cp_task; /* separate cp/wb IO stats*/ |
| 664 | nid_t i_xattr_nid; /* node id that contains xattrs */ |
| 665 | loff_t last_disk_size; /* lastly written file size */ |
| 666 | |
| 667 | #ifdef CONFIG_QUOTA |
| 668 | struct dquot *i_dquot[MAXQUOTAS]; |
| 669 | |
| 670 | /* quota space reservation, managed internally by quota code */ |
| 671 | qsize_t i_reserved_quota; |
| 672 | #endif |
| 673 | struct list_head dirty_list; /* dirty list for dirs and files */ |
| 674 | struct list_head gdirty_list; /* linked in global dirty list */ |
| 675 | struct list_head inmem_ilist; /* list for inmem inodes */ |
| 676 | struct list_head inmem_pages; /* inmemory pages managed by f2fs */ |
| 677 | struct task_struct *inmem_task; /* store inmemory task */ |
| 678 | struct mutex inmem_lock; /* lock for inmemory pages */ |
| 679 | struct extent_tree *extent_tree; /* cached extent_tree entry */ |
| 680 | struct rw_semaphore dio_rwsem[2];/* avoid racing between dio and gc */ |
| 681 | struct rw_semaphore i_mmap_sem; |
| 682 | struct rw_semaphore i_xattr_sem; /* avoid racing between reading and changing EAs */ |
| 683 | |
| 684 | int i_extra_isize; /* size of extra space located in i_addr */ |
| 685 | kprojid_t i_projid; /* id for project quota */ |
| 686 | int i_inline_xattr_size; /* inline xattr size */ |
| 687 | }; |
| 688 | |
| 689 | static inline void get_extent_info(struct extent_info *ext, |
| 690 | struct f2fs_extent *i_ext) |
| 691 | { |
| 692 | ext->fofs = le32_to_cpu(i_ext->fofs); |
| 693 | ext->blk = le32_to_cpu(i_ext->blk); |
| 694 | ext->len = le32_to_cpu(i_ext->len); |
| 695 | } |
| 696 | |
| 697 | static inline void set_raw_extent(struct extent_info *ext, |
| 698 | struct f2fs_extent *i_ext) |
| 699 | { |
| 700 | i_ext->fofs = cpu_to_le32(ext->fofs); |
| 701 | i_ext->blk = cpu_to_le32(ext->blk); |
| 702 | i_ext->len = cpu_to_le32(ext->len); |
| 703 | } |
| 704 | |
| 705 | static inline void set_extent_info(struct extent_info *ei, unsigned int fofs, |
| 706 | u32 blk, unsigned int len) |
| 707 | { |
| 708 | ei->fofs = fofs; |
| 709 | ei->blk = blk; |
| 710 | ei->len = len; |
| 711 | } |
| 712 | |
| 713 | static inline bool __is_discard_mergeable(struct discard_info *back, |
| 714 | struct discard_info *front) |
| 715 | { |
| 716 | return back->lstart + back->len == front->lstart; |
| 717 | } |
| 718 | |
| 719 | static inline bool __is_discard_back_mergeable(struct discard_info *cur, |
| 720 | struct discard_info *back) |
| 721 | { |
| 722 | return __is_discard_mergeable(back, cur); |
| 723 | } |
| 724 | |
| 725 | static inline bool __is_discard_front_mergeable(struct discard_info *cur, |
| 726 | struct discard_info *front) |
| 727 | { |
| 728 | return __is_discard_mergeable(cur, front); |
| 729 | } |
| 730 | |
| 731 | static inline bool __is_extent_mergeable(struct extent_info *back, |
| 732 | struct extent_info *front) |
| 733 | { |
| 734 | return (back->fofs + back->len == front->fofs && |
| 735 | back->blk + back->len == front->blk); |
| 736 | } |
| 737 | |
| 738 | static inline bool __is_back_mergeable(struct extent_info *cur, |
| 739 | struct extent_info *back) |
| 740 | { |
| 741 | return __is_extent_mergeable(back, cur); |
| 742 | } |
| 743 | |
| 744 | static inline bool __is_front_mergeable(struct extent_info *cur, |
| 745 | struct extent_info *front) |
| 746 | { |
| 747 | return __is_extent_mergeable(cur, front); |
| 748 | } |
| 749 | |
| 750 | extern void f2fs_mark_inode_dirty_sync(struct inode *inode, bool sync); |
| 751 | static inline void __try_update_largest_extent(struct inode *inode, |
| 752 | struct extent_tree *et, struct extent_node *en) |
| 753 | { |
| 754 | if (en->ei.len > et->largest.len) { |
| 755 | et->largest = en->ei; |
| 756 | f2fs_mark_inode_dirty_sync(inode, true); |
| 757 | } |
| 758 | } |
| 759 | |
| 760 | /* |
| 761 | * For free nid management |
| 762 | */ |
| 763 | enum nid_state { |
| 764 | FREE_NID, /* newly added to free nid list */ |
| 765 | PREALLOC_NID, /* it is preallocated */ |
| 766 | MAX_NID_STATE, |
| 767 | }; |
| 768 | |
| 769 | struct f2fs_nm_info { |
| 770 | block_t nat_blkaddr; /* base disk address of NAT */ |
| 771 | nid_t max_nid; /* maximum possible node ids */ |
| 772 | nid_t available_nids; /* # of available node ids */ |
| 773 | nid_t next_scan_nid; /* the next nid to be scanned */ |
| 774 | unsigned int ram_thresh; /* control the memory footprint */ |
| 775 | unsigned int ra_nid_pages; /* # of nid pages to be readaheaded */ |
| 776 | unsigned int dirty_nats_ratio; /* control dirty nats ratio threshold */ |
| 777 | |
| 778 | /* NAT cache management */ |
| 779 | struct radix_tree_root nat_root;/* root of the nat entry cache */ |
| 780 | struct radix_tree_root nat_set_root;/* root of the nat set cache */ |
| 781 | struct rw_semaphore nat_tree_lock; /* protect nat_tree_lock */ |
| 782 | struct list_head nat_entries; /* cached nat entry list (clean) */ |
| 783 | unsigned int nat_cnt; /* the # of cached nat entries */ |
| 784 | unsigned int dirty_nat_cnt; /* total num of nat entries in set */ |
| 785 | unsigned int nat_blocks; /* # of nat blocks */ |
| 786 | |
| 787 | /* free node ids management */ |
| 788 | struct radix_tree_root free_nid_root;/* root of the free_nid cache */ |
| 789 | struct list_head free_nid_list; /* list for free nids excluding preallocated nids */ |
| 790 | unsigned int nid_cnt[MAX_NID_STATE]; /* the number of free node id */ |
| 791 | spinlock_t nid_list_lock; /* protect nid lists ops */ |
| 792 | struct mutex build_lock; /* lock for build free nids */ |
| 793 | unsigned char (*free_nid_bitmap)[NAT_ENTRY_BITMAP_SIZE]; |
| 794 | unsigned char *nat_block_bitmap; |
| 795 | unsigned short *free_nid_count; /* free nid count of NAT block */ |
| 796 | |
| 797 | /* for checkpoint */ |
| 798 | char *nat_bitmap; /* NAT bitmap pointer */ |
| 799 | |
| 800 | unsigned int nat_bits_blocks; /* # of nat bits blocks */ |
| 801 | unsigned char *nat_bits; /* NAT bits blocks */ |
| 802 | unsigned char *full_nat_bits; /* full NAT pages */ |
| 803 | unsigned char *empty_nat_bits; /* empty NAT pages */ |
| 804 | #ifdef CONFIG_F2FS_CHECK_FS |
| 805 | char *nat_bitmap_mir; /* NAT bitmap mirror */ |
| 806 | #endif |
| 807 | int bitmap_size; /* bitmap size */ |
| 808 | }; |
| 809 | |
| 810 | /* |
| 811 | * this structure is used as one of function parameters. |
| 812 | * all the information are dedicated to a given direct node block determined |
| 813 | * by the data offset in a file. |
| 814 | */ |
| 815 | struct dnode_of_data { |
| 816 | struct inode *inode; /* vfs inode pointer */ |
| 817 | struct page *inode_page; /* its inode page, NULL is possible */ |
| 818 | struct page *node_page; /* cached direct node page */ |
| 819 | nid_t nid; /* node id of the direct node block */ |
| 820 | unsigned int ofs_in_node; /* data offset in the node page */ |
| 821 | bool inode_page_locked; /* inode page is locked or not */ |
| 822 | bool node_changed; /* is node block changed */ |
| 823 | char cur_level; /* level of hole node page */ |
| 824 | char max_level; /* level of current page located */ |
| 825 | block_t data_blkaddr; /* block address of the node block */ |
| 826 | }; |
| 827 | |
| 828 | static inline void set_new_dnode(struct dnode_of_data *dn, struct inode *inode, |
| 829 | struct page *ipage, struct page *npage, nid_t nid) |
| 830 | { |
| 831 | memset(dn, 0, sizeof(*dn)); |
| 832 | dn->inode = inode; |
| 833 | dn->inode_page = ipage; |
| 834 | dn->node_page = npage; |
| 835 | dn->nid = nid; |
| 836 | } |
| 837 | |
| 838 | /* |
| 839 | * For SIT manager |
| 840 | * |
| 841 | * By default, there are 6 active log areas across the whole main area. |
| 842 | * When considering hot and cold data separation to reduce cleaning overhead, |
| 843 | * we split 3 for data logs and 3 for node logs as hot, warm, and cold types, |
| 844 | * respectively. |
| 845 | * In the current design, you should not change the numbers intentionally. |
| 846 | * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6 |
| 847 | * logs individually according to the underlying devices. (default: 6) |
| 848 | * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for |
| 849 | * data and 8 for node logs. |
| 850 | */ |
| 851 | #define NR_CURSEG_DATA_TYPE (3) |
| 852 | #define NR_CURSEG_NODE_TYPE (3) |
| 853 | #define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE) |
| 854 | |
| 855 | enum { |
| 856 | CURSEG_HOT_DATA = 0, /* directory entry blocks */ |
| 857 | CURSEG_WARM_DATA, /* data blocks */ |
| 858 | CURSEG_COLD_DATA, /* multimedia or GCed data blocks */ |
| 859 | CURSEG_HOT_NODE, /* direct node blocks of directory files */ |
| 860 | CURSEG_WARM_NODE, /* direct node blocks of normal files */ |
| 861 | CURSEG_COLD_NODE, /* indirect node blocks */ |
| 862 | NO_CHECK_TYPE, |
| 863 | }; |
| 864 | |
| 865 | struct flush_cmd { |
| 866 | struct completion wait; |
| 867 | struct llist_node llnode; |
| 868 | nid_t ino; |
| 869 | int ret; |
| 870 | }; |
| 871 | |
| 872 | struct flush_cmd_control { |
| 873 | struct task_struct *f2fs_issue_flush; /* flush thread */ |
| 874 | wait_queue_head_t flush_wait_queue; /* waiting queue for wake-up */ |
| 875 | atomic_t issued_flush; /* # of issued flushes */ |
| 876 | atomic_t issing_flush; /* # of issing flushes */ |
| 877 | struct llist_head issue_list; /* list for command issue */ |
| 878 | struct llist_node *dispatch_list; /* list for command dispatch */ |
| 879 | }; |
| 880 | |
| 881 | struct f2fs_sm_info { |
| 882 | struct sit_info *sit_info; /* whole segment information */ |
| 883 | struct free_segmap_info *free_info; /* free segment information */ |
| 884 | struct dirty_seglist_info *dirty_info; /* dirty segment information */ |
| 885 | struct curseg_info *curseg_array; /* active segment information */ |
| 886 | |
| 887 | struct rw_semaphore curseg_lock; /* for preventing curseg change */ |
| 888 | |
| 889 | block_t seg0_blkaddr; /* block address of 0'th segment */ |
| 890 | block_t main_blkaddr; /* start block address of main area */ |
| 891 | block_t ssa_blkaddr; /* start block address of SSA area */ |
| 892 | |
| 893 | unsigned int segment_count; /* total # of segments */ |
| 894 | unsigned int main_segments; /* # of segments in main area */ |
| 895 | unsigned int reserved_segments; /* # of reserved segments */ |
| 896 | unsigned int ovp_segments; /* # of overprovision segments */ |
| 897 | |
| 898 | /* a threshold to reclaim prefree segments */ |
| 899 | unsigned int rec_prefree_segments; |
| 900 | |
| 901 | /* for batched trimming */ |
| 902 | unsigned int trim_sections; /* # of sections to trim */ |
| 903 | |
| 904 | struct list_head sit_entry_set; /* sit entry set list */ |
| 905 | |
| 906 | unsigned int ipu_policy; /* in-place-update policy */ |
| 907 | unsigned int min_ipu_util; /* in-place-update threshold */ |
| 908 | unsigned int min_fsync_blocks; /* threshold for fsync */ |
| 909 | unsigned int min_hot_blocks; /* threshold for hot block allocation */ |
| 910 | unsigned int min_ssr_sections; /* threshold to trigger SSR allocation */ |
| 911 | |
| 912 | /* for flush command control */ |
| 913 | struct flush_cmd_control *fcc_info; |
| 914 | |
| 915 | /* for discard command control */ |
| 916 | struct discard_cmd_control *dcc_info; |
| 917 | }; |
| 918 | |
| 919 | /* |
| 920 | * For superblock |
| 921 | */ |
| 922 | /* |
| 923 | * COUNT_TYPE for monitoring |
| 924 | * |
| 925 | * f2fs monitors the number of several block types such as on-writeback, |
| 926 | * dirty dentry blocks, dirty node blocks, and dirty meta blocks. |
| 927 | */ |
| 928 | #define WB_DATA_TYPE(p) (__is_cp_guaranteed(p) ? F2FS_WB_CP_DATA : F2FS_WB_DATA) |
| 929 | enum count_type { |
| 930 | F2FS_DIRTY_DENTS, |
| 931 | F2FS_DIRTY_DATA, |
| 932 | F2FS_DIRTY_QDATA, |
| 933 | F2FS_DIRTY_NODES, |
| 934 | F2FS_DIRTY_META, |
| 935 | F2FS_INMEM_PAGES, |
| 936 | F2FS_DIRTY_IMETA, |
| 937 | F2FS_WB_CP_DATA, |
| 938 | F2FS_WB_DATA, |
| 939 | NR_COUNT_TYPE, |
| 940 | }; |
| 941 | |
| 942 | /* |
| 943 | * The below are the page types of bios used in submit_bio(). |
| 944 | * The available types are: |
| 945 | * DATA User data pages. It operates as async mode. |
| 946 | * NODE Node pages. It operates as async mode. |
| 947 | * META FS metadata pages such as SIT, NAT, CP. |
| 948 | * NR_PAGE_TYPE The number of page types. |
| 949 | * META_FLUSH Make sure the previous pages are written |
| 950 | * with waiting the bio's completion |
| 951 | * ... Only can be used with META. |
| 952 | */ |
| 953 | #define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type)) |
| 954 | enum page_type { |
| 955 | DATA, |
| 956 | NODE, |
| 957 | META, |
| 958 | NR_PAGE_TYPE, |
| 959 | META_FLUSH, |
| 960 | INMEM, /* the below types are used by tracepoints only. */ |
| 961 | INMEM_DROP, |
| 962 | INMEM_INVALIDATE, |
| 963 | INMEM_REVOKE, |
| 964 | IPU, |
| 965 | OPU, |
| 966 | }; |
| 967 | |
| 968 | enum temp_type { |
| 969 | HOT = 0, /* must be zero for meta bio */ |
| 970 | WARM, |
| 971 | COLD, |
| 972 | NR_TEMP_TYPE, |
| 973 | }; |
| 974 | |
| 975 | enum need_lock_type { |
| 976 | LOCK_REQ = 0, |
| 977 | LOCK_DONE, |
| 978 | LOCK_RETRY, |
| 979 | }; |
| 980 | |
| 981 | enum cp_reason_type { |
| 982 | CP_NO_NEEDED, |
| 983 | CP_NON_REGULAR, |
| 984 | CP_HARDLINK, |
| 985 | CP_SB_NEED_CP, |
| 986 | CP_WRONG_PINO, |
| 987 | CP_NO_SPC_ROLL, |
| 988 | CP_NODE_NEED_CP, |
| 989 | CP_FASTBOOT_MODE, |
| 990 | CP_SPEC_LOG_NUM, |
| 991 | }; |
| 992 | |
| 993 | enum iostat_type { |
| 994 | APP_DIRECT_IO, /* app direct IOs */ |
| 995 | APP_BUFFERED_IO, /* app buffered IOs */ |
| 996 | APP_WRITE_IO, /* app write IOs */ |
| 997 | APP_MAPPED_IO, /* app mapped IOs */ |
| 998 | FS_DATA_IO, /* data IOs from kworker/fsync/reclaimer */ |
| 999 | FS_NODE_IO, /* node IOs from kworker/fsync/reclaimer */ |
| 1000 | FS_META_IO, /* meta IOs from kworker/reclaimer */ |
| 1001 | FS_GC_DATA_IO, /* data IOs from forground gc */ |
| 1002 | FS_GC_NODE_IO, /* node IOs from forground gc */ |
| 1003 | FS_CP_DATA_IO, /* data IOs from checkpoint */ |
| 1004 | FS_CP_NODE_IO, /* node IOs from checkpoint */ |
| 1005 | FS_CP_META_IO, /* meta IOs from checkpoint */ |
| 1006 | FS_DISCARD, /* discard */ |
| 1007 | NR_IO_TYPE, |
| 1008 | }; |
| 1009 | |
| 1010 | struct f2fs_io_info { |
| 1011 | struct f2fs_sb_info *sbi; /* f2fs_sb_info pointer */ |
| 1012 | nid_t ino; /* inode number */ |
| 1013 | enum page_type type; /* contains DATA/NODE/META/META_FLUSH */ |
| 1014 | enum temp_type temp; /* contains HOT/WARM/COLD */ |
| 1015 | int op; /* contains REQ_OP_ */ |
| 1016 | int op_flags; /* req_flag_bits */ |
| 1017 | block_t new_blkaddr; /* new block address to be written */ |
| 1018 | block_t old_blkaddr; /* old block address before Cow */ |
| 1019 | struct page *page; /* page to be written */ |
| 1020 | struct page *encrypted_page; /* encrypted page */ |
| 1021 | struct list_head list; /* serialize IOs */ |
| 1022 | bool submitted; /* indicate IO submission */ |
| 1023 | int need_lock; /* indicate we need to lock cp_rwsem */ |
| 1024 | bool in_list; /* indicate fio is in io_list */ |
| 1025 | enum iostat_type io_type; /* io type */ |
| 1026 | }; |
| 1027 | |
| 1028 | #define is_read_io(rw) ((rw) == READ) |
| 1029 | struct f2fs_bio_info { |
| 1030 | struct f2fs_sb_info *sbi; /* f2fs superblock */ |
| 1031 | struct bio *bio; /* bios to merge */ |
| 1032 | sector_t last_block_in_bio; /* last block number */ |
| 1033 | struct f2fs_io_info fio; /* store buffered io info. */ |
| 1034 | struct rw_semaphore io_rwsem; /* blocking op for bio */ |
| 1035 | spinlock_t io_lock; /* serialize DATA/NODE IOs */ |
| 1036 | struct list_head io_list; /* track fios */ |
| 1037 | }; |
| 1038 | |
| 1039 | #define FDEV(i) (sbi->devs[i]) |
| 1040 | #define RDEV(i) (raw_super->devs[i]) |
| 1041 | struct f2fs_dev_info { |
| 1042 | struct block_device *bdev; |
| 1043 | char path[MAX_PATH_LEN]; |
| 1044 | unsigned int total_segments; |
| 1045 | block_t start_blk; |
| 1046 | block_t end_blk; |
| 1047 | #ifdef CONFIG_BLK_DEV_ZONED |
| 1048 | unsigned int nr_blkz; /* Total number of zones */ |
| 1049 | u8 *blkz_type; /* Array of zones type */ |
| 1050 | #endif |
| 1051 | }; |
| 1052 | |
| 1053 | enum inode_type { |
| 1054 | DIR_INODE, /* for dirty dir inode */ |
| 1055 | FILE_INODE, /* for dirty regular/symlink inode */ |
| 1056 | DIRTY_META, /* for all dirtied inode metadata */ |
| 1057 | ATOMIC_FILE, /* for all atomic files */ |
| 1058 | NR_INODE_TYPE, |
| 1059 | }; |
| 1060 | |
| 1061 | /* for inner inode cache management */ |
| 1062 | struct inode_management { |
| 1063 | struct radix_tree_root ino_root; /* ino entry array */ |
| 1064 | spinlock_t ino_lock; /* for ino entry lock */ |
| 1065 | struct list_head ino_list; /* inode list head */ |
| 1066 | unsigned long ino_num; /* number of entries */ |
| 1067 | }; |
| 1068 | |
| 1069 | /* For s_flag in struct f2fs_sb_info */ |
| 1070 | enum { |
| 1071 | SBI_IS_DIRTY, /* dirty flag for checkpoint */ |
| 1072 | SBI_IS_CLOSE, /* specify unmounting */ |
| 1073 | SBI_NEED_FSCK, /* need fsck.f2fs to fix */ |
| 1074 | SBI_POR_DOING, /* recovery is doing or not */ |
| 1075 | SBI_NEED_SB_WRITE, /* need to recover superblock */ |
| 1076 | SBI_NEED_CP, /* need to checkpoint */ |
| 1077 | }; |
| 1078 | |
| 1079 | enum { |
| 1080 | CP_TIME, |
| 1081 | REQ_TIME, |
| 1082 | MAX_TIME, |
| 1083 | }; |
| 1084 | |
| 1085 | struct f2fs_sb_info { |
| 1086 | struct super_block *sb; /* pointer to VFS super block */ |
| 1087 | struct proc_dir_entry *s_proc; /* proc entry */ |
| 1088 | struct f2fs_super_block *raw_super; /* raw super block pointer */ |
| 1089 | int valid_super_block; /* valid super block no */ |
| 1090 | unsigned long s_flag; /* flags for sbi */ |
| 1091 | |
| 1092 | #ifdef CONFIG_BLK_DEV_ZONED |
| 1093 | unsigned int blocks_per_blkz; /* F2FS blocks per zone */ |
| 1094 | unsigned int log_blocks_per_blkz; /* log2 F2FS blocks per zone */ |
| 1095 | #endif |
| 1096 | |
| 1097 | /* for node-related operations */ |
| 1098 | struct f2fs_nm_info *nm_info; /* node manager */ |
| 1099 | struct inode *node_inode; /* cache node blocks */ |
| 1100 | |
| 1101 | /* for segment-related operations */ |
| 1102 | struct f2fs_sm_info *sm_info; /* segment manager */ |
| 1103 | |
| 1104 | /* for bio operations */ |
| 1105 | struct f2fs_bio_info *write_io[NR_PAGE_TYPE]; /* for write bios */ |
| 1106 | struct mutex wio_mutex[NR_PAGE_TYPE - 1][NR_TEMP_TYPE]; |
| 1107 | /* bio ordering for NODE/DATA */ |
| 1108 | int write_io_size_bits; /* Write IO size bits */ |
| 1109 | mempool_t *write_io_dummy; /* Dummy pages */ |
| 1110 | |
| 1111 | /* for checkpoint */ |
| 1112 | struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */ |
| 1113 | int cur_cp_pack; /* remain current cp pack */ |
| 1114 | spinlock_t cp_lock; /* for flag in ckpt */ |
| 1115 | struct inode *meta_inode; /* cache meta blocks */ |
| 1116 | struct mutex cp_mutex; /* checkpoint procedure lock */ |
| 1117 | struct rw_semaphore cp_rwsem; /* blocking FS operations */ |
| 1118 | struct rw_semaphore node_write; /* locking node writes */ |
| 1119 | struct rw_semaphore node_change; /* locking node change */ |
| 1120 | wait_queue_head_t cp_wait; |
| 1121 | unsigned long last_time[MAX_TIME]; /* to store time in jiffies */ |
| 1122 | long interval_time[MAX_TIME]; /* to store thresholds */ |
| 1123 | |
| 1124 | struct inode_management im[MAX_INO_ENTRY]; /* manage inode cache */ |
| 1125 | |
| 1126 | /* for orphan inode, use 0'th array */ |
| 1127 | unsigned int max_orphans; /* max orphan inodes */ |
| 1128 | |
| 1129 | /* for inode management */ |
| 1130 | struct list_head inode_list[NR_INODE_TYPE]; /* dirty inode list */ |
| 1131 | spinlock_t inode_lock[NR_INODE_TYPE]; /* for dirty inode list lock */ |
| 1132 | |
| 1133 | /* for extent tree cache */ |
| 1134 | struct radix_tree_root extent_tree_root;/* cache extent cache entries */ |
| 1135 | struct mutex extent_tree_lock; /* locking extent radix tree */ |
| 1136 | struct list_head extent_list; /* lru list for shrinker */ |
| 1137 | spinlock_t extent_lock; /* locking extent lru list */ |
| 1138 | atomic_t total_ext_tree; /* extent tree count */ |
| 1139 | struct list_head zombie_list; /* extent zombie tree list */ |
| 1140 | atomic_t total_zombie_tree; /* extent zombie tree count */ |
| 1141 | atomic_t total_ext_node; /* extent info count */ |
| 1142 | |
| 1143 | /* basic filesystem units */ |
| 1144 | unsigned int log_sectors_per_block; /* log2 sectors per block */ |
| 1145 | unsigned int log_blocksize; /* log2 block size */ |
| 1146 | unsigned int blocksize; /* block size */ |
| 1147 | unsigned int root_ino_num; /* root inode number*/ |
| 1148 | unsigned int node_ino_num; /* node inode number*/ |
| 1149 | unsigned int meta_ino_num; /* meta inode number*/ |
| 1150 | unsigned int log_blocks_per_seg; /* log2 blocks per segment */ |
| 1151 | unsigned int blocks_per_seg; /* blocks per segment */ |
| 1152 | unsigned int segs_per_sec; /* segments per section */ |
| 1153 | unsigned int secs_per_zone; /* sections per zone */ |
| 1154 | unsigned int total_sections; /* total section count */ |
| 1155 | unsigned int total_node_count; /* total node block count */ |
| 1156 | unsigned int total_valid_node_count; /* valid node block count */ |
| 1157 | loff_t max_file_blocks; /* max block index of file */ |
| 1158 | int active_logs; /* # of active logs */ |
| 1159 | int dir_level; /* directory level */ |
| 1160 | int inline_xattr_size; /* inline xattr size */ |
| 1161 | unsigned int trigger_ssr_threshold; /* threshold to trigger ssr */ |
| 1162 | |
| 1163 | block_t user_block_count; /* # of user blocks */ |
| 1164 | block_t total_valid_block_count; /* # of valid blocks */ |
| 1165 | block_t discard_blks; /* discard command candidats */ |
| 1166 | block_t last_valid_block_count; /* for recovery */ |
| 1167 | block_t reserved_blocks; /* configurable reserved blocks */ |
| 1168 | block_t current_reserved_blocks; /* current reserved blocks */ |
| 1169 | |
| 1170 | u32 s_next_generation; /* for NFS support */ |
| 1171 | |
| 1172 | /* # of pages, see count_type */ |
| 1173 | atomic_t nr_pages[NR_COUNT_TYPE]; |
| 1174 | /* # of allocated blocks */ |
| 1175 | struct percpu_counter alloc_valid_block_count; |
| 1176 | |
| 1177 | /* writeback control */ |
| 1178 | atomic_t wb_sync_req; /* count # of WB_SYNC threads */ |
| 1179 | |
| 1180 | /* valid inode count */ |
| 1181 | struct percpu_counter total_valid_inode_count; |
| 1182 | |
| 1183 | struct f2fs_mount_info mount_opt; /* mount options */ |
| 1184 | |
| 1185 | /* for cleaning operations */ |
| 1186 | struct mutex gc_mutex; /* mutex for GC */ |
| 1187 | struct f2fs_gc_kthread *gc_thread; /* GC thread */ |
| 1188 | unsigned int cur_victim_sec; /* current victim section num */ |
| 1189 | |
| 1190 | /* threshold for converting bg victims for fg */ |
| 1191 | u64 fggc_threshold; |
| 1192 | |
| 1193 | /* maximum # of trials to find a victim segment for SSR and GC */ |
| 1194 | unsigned int max_victim_search; |
| 1195 | |
| 1196 | /* |
| 1197 | * for stat information. |
| 1198 | * one is for the LFS mode, and the other is for the SSR mode. |
| 1199 | */ |
| 1200 | #ifdef CONFIG_F2FS_STAT_FS |
| 1201 | struct f2fs_stat_info *stat_info; /* FS status information */ |
| 1202 | unsigned int segment_count[2]; /* # of allocated segments */ |
| 1203 | unsigned int block_count[2]; /* # of allocated blocks */ |
| 1204 | atomic_t inplace_count; /* # of inplace update */ |
| 1205 | atomic64_t total_hit_ext; /* # of lookup extent cache */ |
| 1206 | atomic64_t read_hit_rbtree; /* # of hit rbtree extent node */ |
| 1207 | atomic64_t read_hit_largest; /* # of hit largest extent node */ |
| 1208 | atomic64_t read_hit_cached; /* # of hit cached extent node */ |
| 1209 | atomic_t inline_xattr; /* # of inline_xattr inodes */ |
| 1210 | atomic_t inline_inode; /* # of inline_data inodes */ |
| 1211 | atomic_t inline_dir; /* # of inline_dentry inodes */ |
| 1212 | atomic_t aw_cnt; /* # of atomic writes */ |
| 1213 | atomic_t vw_cnt; /* # of volatile writes */ |
| 1214 | atomic_t max_aw_cnt; /* max # of atomic writes */ |
| 1215 | atomic_t max_vw_cnt; /* max # of volatile writes */ |
| 1216 | int bg_gc; /* background gc calls */ |
| 1217 | unsigned int ndirty_inode[NR_INODE_TYPE]; /* # of dirty inodes */ |
| 1218 | #endif |
| 1219 | spinlock_t stat_lock; /* lock for stat operations */ |
| 1220 | |
| 1221 | /* For app/fs IO statistics */ |
| 1222 | spinlock_t iostat_lock; |
| 1223 | unsigned long long write_iostat[NR_IO_TYPE]; |
| 1224 | bool iostat_enable; |
| 1225 | |
| 1226 | /* For sysfs suppport */ |
| 1227 | struct kobject s_kobj; |
| 1228 | struct completion s_kobj_unregister; |
| 1229 | |
| 1230 | /* For shrinker support */ |
| 1231 | struct list_head s_list; |
| 1232 | int s_ndevs; /* number of devices */ |
| 1233 | struct f2fs_dev_info *devs; /* for device list */ |
| 1234 | unsigned int dirty_device; /* for checkpoint data flush */ |
| 1235 | spinlock_t dev_lock; /* protect dirty_device */ |
| 1236 | struct mutex umount_mutex; |
| 1237 | unsigned int shrinker_run_no; |
| 1238 | |
| 1239 | /* For write statistics */ |
| 1240 | u64 sectors_written_start; |
| 1241 | u64 kbytes_written; |
| 1242 | |
| 1243 | /* Reference to checksum algorithm driver via cryptoapi */ |
| 1244 | struct crypto_shash *s_chksum_driver; |
| 1245 | |
| 1246 | /* Precomputed FS UUID checksum for seeding other checksums */ |
| 1247 | __u32 s_chksum_seed; |
| 1248 | |
| 1249 | /* For fault injection */ |
| 1250 | #ifdef CONFIG_F2FS_FAULT_INJECTION |
| 1251 | struct f2fs_fault_info fault_info; |
| 1252 | #endif |
| 1253 | |
| 1254 | #ifdef CONFIG_QUOTA |
| 1255 | /* Names of quota files with journalled quota */ |
| 1256 | char *s_qf_names[MAXQUOTAS]; |
| 1257 | int s_jquota_fmt; /* Format of quota to use */ |
| 1258 | #endif |
| 1259 | }; |
| 1260 | |
| 1261 | #ifdef CONFIG_F2FS_FAULT_INJECTION |
| 1262 | #define f2fs_show_injection_info(type) \ |
| 1263 | printk("%sF2FS-fs : inject %s in %s of %pF\n", \ |
| 1264 | KERN_INFO, fault_name[type], \ |
| 1265 | __func__, __builtin_return_address(0)) |
| 1266 | static inline bool time_to_inject(struct f2fs_sb_info *sbi, int type) |
| 1267 | { |
| 1268 | struct f2fs_fault_info *ffi = &sbi->fault_info; |
| 1269 | |
| 1270 | if (!ffi->inject_rate) |
| 1271 | return false; |
| 1272 | |
| 1273 | if (!IS_FAULT_SET(ffi, type)) |
| 1274 | return false; |
| 1275 | |
| 1276 | atomic_inc(&ffi->inject_ops); |
| 1277 | if (atomic_read(&ffi->inject_ops) >= ffi->inject_rate) { |
| 1278 | atomic_set(&ffi->inject_ops, 0); |
| 1279 | return true; |
| 1280 | } |
| 1281 | return false; |
| 1282 | } |
| 1283 | #endif |
| 1284 | |
| 1285 | /* For write statistics. Suppose sector size is 512 bytes, |
| 1286 | * and the return value is in kbytes. s is of struct f2fs_sb_info. |
| 1287 | */ |
| 1288 | #define BD_PART_WRITTEN(s) \ |
| 1289 | (((u64)part_stat_read((s)->sb->s_bdev->bd_part, sectors[1]) - \ |
| 1290 | (s)->sectors_written_start) >> 1) |
| 1291 | |
| 1292 | static inline void f2fs_update_time(struct f2fs_sb_info *sbi, int type) |
| 1293 | { |
| 1294 | sbi->last_time[type] = jiffies; |
| 1295 | } |
| 1296 | |
| 1297 | static inline bool f2fs_time_over(struct f2fs_sb_info *sbi, int type) |
| 1298 | { |
| 1299 | unsigned long interval = sbi->interval_time[type] * HZ; |
| 1300 | |
| 1301 | return time_after(jiffies, sbi->last_time[type] + interval); |
| 1302 | } |
| 1303 | |
| 1304 | static inline bool is_idle(struct f2fs_sb_info *sbi) |
| 1305 | { |
| 1306 | struct block_device *bdev = sbi->sb->s_bdev; |
| 1307 | struct request_queue *q = bdev_get_queue(bdev); |
| 1308 | struct request_list *rl = &q->root_rl; |
| 1309 | |
| 1310 | if (rl->count[BLK_RW_SYNC] || rl->count[BLK_RW_ASYNC]) |
| 1311 | return 0; |
| 1312 | |
| 1313 | return f2fs_time_over(sbi, REQ_TIME); |
| 1314 | } |
| 1315 | |
| 1316 | /* |
| 1317 | * Inline functions |
| 1318 | */ |
| 1319 | static inline u32 f2fs_crc32(struct f2fs_sb_info *sbi, const void *address, |
| 1320 | unsigned int length) |
| 1321 | { |
| 1322 | SHASH_DESC_ON_STACK(shash, sbi->s_chksum_driver); |
| 1323 | u32 *ctx = (u32 *)shash_desc_ctx(shash); |
| 1324 | u32 retval; |
| 1325 | int err; |
| 1326 | |
| 1327 | shash->tfm = sbi->s_chksum_driver; |
| 1328 | shash->flags = 0; |
| 1329 | *ctx = F2FS_SUPER_MAGIC; |
| 1330 | |
| 1331 | err = crypto_shash_update(shash, address, length); |
| 1332 | BUG_ON(err); |
| 1333 | |
| 1334 | retval = *ctx; |
| 1335 | barrier_data(ctx); |
| 1336 | return retval; |
| 1337 | } |
| 1338 | |
| 1339 | static inline bool f2fs_crc_valid(struct f2fs_sb_info *sbi, __u32 blk_crc, |
| 1340 | void *buf, size_t buf_size) |
| 1341 | { |
| 1342 | return f2fs_crc32(sbi, buf, buf_size) == blk_crc; |
| 1343 | } |
| 1344 | |
| 1345 | static inline u32 f2fs_chksum(struct f2fs_sb_info *sbi, u32 crc, |
| 1346 | const void *address, unsigned int length) |
| 1347 | { |
| 1348 | struct { |
| 1349 | struct shash_desc shash; |
| 1350 | char ctx[4]; |
| 1351 | } desc; |
| 1352 | int err; |
| 1353 | |
| 1354 | BUG_ON(crypto_shash_descsize(sbi->s_chksum_driver) != sizeof(desc.ctx)); |
| 1355 | |
| 1356 | desc.shash.tfm = sbi->s_chksum_driver; |
| 1357 | desc.shash.flags = 0; |
| 1358 | *(u32 *)desc.ctx = crc; |
| 1359 | |
| 1360 | err = crypto_shash_update(&desc.shash, address, length); |
| 1361 | BUG_ON(err); |
| 1362 | |
| 1363 | return *(u32 *)desc.ctx; |
| 1364 | } |
| 1365 | |
| 1366 | static inline struct f2fs_inode_info *F2FS_I(struct inode *inode) |
| 1367 | { |
| 1368 | return container_of(inode, struct f2fs_inode_info, vfs_inode); |
| 1369 | } |
| 1370 | |
| 1371 | static inline struct f2fs_sb_info *F2FS_SB(struct super_block *sb) |
| 1372 | { |
| 1373 | return sb->s_fs_info; |
| 1374 | } |
| 1375 | |
| 1376 | static inline struct f2fs_sb_info *F2FS_I_SB(struct inode *inode) |
| 1377 | { |
| 1378 | return F2FS_SB(inode->i_sb); |
| 1379 | } |
| 1380 | |
| 1381 | static inline struct f2fs_sb_info *F2FS_M_SB(struct address_space *mapping) |
| 1382 | { |
| 1383 | return F2FS_I_SB(mapping->host); |
| 1384 | } |
| 1385 | |
| 1386 | static inline struct f2fs_sb_info *F2FS_P_SB(struct page *page) |
| 1387 | { |
| 1388 | return F2FS_M_SB(page->mapping); |
| 1389 | } |
| 1390 | |
| 1391 | static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi) |
| 1392 | { |
| 1393 | return (struct f2fs_super_block *)(sbi->raw_super); |
| 1394 | } |
| 1395 | |
| 1396 | static inline struct f2fs_checkpoint *F2FS_CKPT(struct f2fs_sb_info *sbi) |
| 1397 | { |
| 1398 | return (struct f2fs_checkpoint *)(sbi->ckpt); |
| 1399 | } |
| 1400 | |
| 1401 | static inline struct f2fs_node *F2FS_NODE(struct page *page) |
| 1402 | { |
| 1403 | return (struct f2fs_node *)page_address(page); |
| 1404 | } |
| 1405 | |
| 1406 | static inline struct f2fs_inode *F2FS_INODE(struct page *page) |
| 1407 | { |
| 1408 | return &((struct f2fs_node *)page_address(page))->i; |
| 1409 | } |
| 1410 | |
| 1411 | static inline struct f2fs_nm_info *NM_I(struct f2fs_sb_info *sbi) |
| 1412 | { |
| 1413 | return (struct f2fs_nm_info *)(sbi->nm_info); |
| 1414 | } |
| 1415 | |
| 1416 | static inline struct f2fs_sm_info *SM_I(struct f2fs_sb_info *sbi) |
| 1417 | { |
| 1418 | return (struct f2fs_sm_info *)(sbi->sm_info); |
| 1419 | } |
| 1420 | |
| 1421 | static inline struct sit_info *SIT_I(struct f2fs_sb_info *sbi) |
| 1422 | { |
| 1423 | return (struct sit_info *)(SM_I(sbi)->sit_info); |
| 1424 | } |
| 1425 | |
| 1426 | static inline struct free_segmap_info *FREE_I(struct f2fs_sb_info *sbi) |
| 1427 | { |
| 1428 | return (struct free_segmap_info *)(SM_I(sbi)->free_info); |
| 1429 | } |
| 1430 | |
| 1431 | static inline struct dirty_seglist_info *DIRTY_I(struct f2fs_sb_info *sbi) |
| 1432 | { |
| 1433 | return (struct dirty_seglist_info *)(SM_I(sbi)->dirty_info); |
| 1434 | } |
| 1435 | |
| 1436 | static inline struct address_space *META_MAPPING(struct f2fs_sb_info *sbi) |
| 1437 | { |
| 1438 | return sbi->meta_inode->i_mapping; |
| 1439 | } |
| 1440 | |
| 1441 | static inline struct address_space *NODE_MAPPING(struct f2fs_sb_info *sbi) |
| 1442 | { |
| 1443 | return sbi->node_inode->i_mapping; |
| 1444 | } |
| 1445 | |
| 1446 | static inline bool is_sbi_flag_set(struct f2fs_sb_info *sbi, unsigned int type) |
| 1447 | { |
| 1448 | return test_bit(type, &sbi->s_flag); |
| 1449 | } |
| 1450 | |
| 1451 | static inline void set_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type) |
| 1452 | { |
| 1453 | set_bit(type, &sbi->s_flag); |
| 1454 | } |
| 1455 | |
| 1456 | static inline void clear_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type) |
| 1457 | { |
| 1458 | clear_bit(type, &sbi->s_flag); |
| 1459 | } |
| 1460 | |
| 1461 | static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp) |
| 1462 | { |
| 1463 | return le64_to_cpu(cp->checkpoint_ver); |
| 1464 | } |
| 1465 | |
| 1466 | static inline unsigned long f2fs_qf_ino(struct super_block *sb, int type) |
| 1467 | { |
| 1468 | if (type < F2FS_MAX_QUOTAS) |
| 1469 | return le32_to_cpu(F2FS_SB(sb)->raw_super->qf_ino[type]); |
| 1470 | return 0; |
| 1471 | } |
| 1472 | |
| 1473 | static inline __u64 cur_cp_crc(struct f2fs_checkpoint *cp) |
| 1474 | { |
| 1475 | size_t crc_offset = le32_to_cpu(cp->checksum_offset); |
| 1476 | return le32_to_cpu(*((__le32 *)((unsigned char *)cp + crc_offset))); |
| 1477 | } |
| 1478 | |
| 1479 | static inline bool __is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f) |
| 1480 | { |
| 1481 | unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags); |
| 1482 | |
| 1483 | return ckpt_flags & f; |
| 1484 | } |
| 1485 | |
| 1486 | static inline bool is_set_ckpt_flags(struct f2fs_sb_info *sbi, unsigned int f) |
| 1487 | { |
| 1488 | return __is_set_ckpt_flags(F2FS_CKPT(sbi), f); |
| 1489 | } |
| 1490 | |
| 1491 | static inline void __set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f) |
| 1492 | { |
| 1493 | unsigned int ckpt_flags; |
| 1494 | |
| 1495 | ckpt_flags = le32_to_cpu(cp->ckpt_flags); |
| 1496 | ckpt_flags |= f; |
| 1497 | cp->ckpt_flags = cpu_to_le32(ckpt_flags); |
| 1498 | } |
| 1499 | |
| 1500 | static inline void set_ckpt_flags(struct f2fs_sb_info *sbi, unsigned int f) |
| 1501 | { |
| 1502 | unsigned long flags; |
| 1503 | |
| 1504 | spin_lock_irqsave(&sbi->cp_lock, flags); |
| 1505 | __set_ckpt_flags(F2FS_CKPT(sbi), f); |
| 1506 | spin_unlock_irqrestore(&sbi->cp_lock, flags); |
| 1507 | } |
| 1508 | |
| 1509 | static inline void __clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f) |
| 1510 | { |
| 1511 | unsigned int ckpt_flags; |
| 1512 | |
| 1513 | ckpt_flags = le32_to_cpu(cp->ckpt_flags); |
| 1514 | ckpt_flags &= (~f); |
| 1515 | cp->ckpt_flags = cpu_to_le32(ckpt_flags); |
| 1516 | } |
| 1517 | |
| 1518 | static inline void clear_ckpt_flags(struct f2fs_sb_info *sbi, unsigned int f) |
| 1519 | { |
| 1520 | unsigned long flags; |
| 1521 | |
| 1522 | spin_lock_irqsave(&sbi->cp_lock, flags); |
| 1523 | __clear_ckpt_flags(F2FS_CKPT(sbi), f); |
| 1524 | spin_unlock_irqrestore(&sbi->cp_lock, flags); |
| 1525 | } |
| 1526 | |
| 1527 | static inline void disable_nat_bits(struct f2fs_sb_info *sbi, bool lock) |
| 1528 | { |
| 1529 | unsigned long flags; |
| 1530 | |
| 1531 | set_sbi_flag(sbi, SBI_NEED_FSCK); |
| 1532 | |
| 1533 | if (lock) |
| 1534 | spin_lock_irqsave(&sbi->cp_lock, flags); |
| 1535 | __clear_ckpt_flags(F2FS_CKPT(sbi), CP_NAT_BITS_FLAG); |
| 1536 | kfree(NM_I(sbi)->nat_bits); |
| 1537 | NM_I(sbi)->nat_bits = NULL; |
| 1538 | if (lock) |
| 1539 | spin_unlock_irqrestore(&sbi->cp_lock, flags); |
| 1540 | } |
| 1541 | |
| 1542 | static inline bool enabled_nat_bits(struct f2fs_sb_info *sbi, |
| 1543 | struct cp_control *cpc) |
| 1544 | { |
| 1545 | bool set = is_set_ckpt_flags(sbi, CP_NAT_BITS_FLAG); |
| 1546 | |
| 1547 | return (cpc) ? (cpc->reason & CP_UMOUNT) && set : set; |
| 1548 | } |
| 1549 | |
| 1550 | static inline void f2fs_lock_op(struct f2fs_sb_info *sbi) |
| 1551 | { |
| 1552 | down_read(&sbi->cp_rwsem); |
| 1553 | } |
| 1554 | |
| 1555 | static inline int f2fs_trylock_op(struct f2fs_sb_info *sbi) |
| 1556 | { |
| 1557 | return down_read_trylock(&sbi->cp_rwsem); |
| 1558 | } |
| 1559 | |
| 1560 | static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi) |
| 1561 | { |
| 1562 | up_read(&sbi->cp_rwsem); |
| 1563 | } |
| 1564 | |
| 1565 | static inline void f2fs_lock_all(struct f2fs_sb_info *sbi) |
| 1566 | { |
| 1567 | down_write(&sbi->cp_rwsem); |
| 1568 | } |
| 1569 | |
| 1570 | static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi) |
| 1571 | { |
| 1572 | up_write(&sbi->cp_rwsem); |
| 1573 | } |
| 1574 | |
| 1575 | static inline int __get_cp_reason(struct f2fs_sb_info *sbi) |
| 1576 | { |
| 1577 | int reason = CP_SYNC; |
| 1578 | |
| 1579 | if (test_opt(sbi, FASTBOOT)) |
| 1580 | reason = CP_FASTBOOT; |
| 1581 | if (is_sbi_flag_set(sbi, SBI_IS_CLOSE)) |
| 1582 | reason = CP_UMOUNT; |
| 1583 | return reason; |
| 1584 | } |
| 1585 | |
| 1586 | static inline bool __remain_node_summaries(int reason) |
| 1587 | { |
| 1588 | return (reason & (CP_UMOUNT | CP_FASTBOOT)); |
| 1589 | } |
| 1590 | |
| 1591 | static inline bool __exist_node_summaries(struct f2fs_sb_info *sbi) |
| 1592 | { |
| 1593 | return (is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG) || |
| 1594 | is_set_ckpt_flags(sbi, CP_FASTBOOT_FLAG)); |
| 1595 | } |
| 1596 | |
| 1597 | /* |
| 1598 | * Check whether the given nid is within node id range. |
| 1599 | */ |
| 1600 | static inline int check_nid_range(struct f2fs_sb_info *sbi, nid_t nid) |
| 1601 | { |
| 1602 | if (unlikely(nid < F2FS_ROOT_INO(sbi))) |
| 1603 | return -EINVAL; |
| 1604 | if (unlikely(nid >= NM_I(sbi)->max_nid)) |
| 1605 | return -EINVAL; |
| 1606 | return 0; |
| 1607 | } |
| 1608 | |
| 1609 | /* |
| 1610 | * Check whether the inode has blocks or not |
| 1611 | */ |
| 1612 | static inline int F2FS_HAS_BLOCKS(struct inode *inode) |
| 1613 | { |
| 1614 | block_t xattr_block = F2FS_I(inode)->i_xattr_nid ? 1 : 0; |
| 1615 | |
| 1616 | return (inode->i_blocks >> F2FS_LOG_SECTORS_PER_BLOCK) > xattr_block; |
| 1617 | } |
| 1618 | |
| 1619 | static inline bool f2fs_has_xattr_block(unsigned int ofs) |
| 1620 | { |
| 1621 | return ofs == XATTR_NODE_OFFSET; |
| 1622 | } |
| 1623 | |
| 1624 | static inline void f2fs_i_blocks_write(struct inode *, block_t, bool, bool); |
| 1625 | static inline int inc_valid_block_count(struct f2fs_sb_info *sbi, |
| 1626 | struct inode *inode, blkcnt_t *count) |
| 1627 | { |
| 1628 | blkcnt_t diff = 0, release = 0; |
| 1629 | block_t avail_user_block_count; |
| 1630 | int ret; |
| 1631 | |
| 1632 | ret = dquot_reserve_block(inode, *count); |
| 1633 | if (ret) |
| 1634 | return ret; |
| 1635 | |
| 1636 | #ifdef CONFIG_F2FS_FAULT_INJECTION |
| 1637 | if (time_to_inject(sbi, FAULT_BLOCK)) { |
| 1638 | f2fs_show_injection_info(FAULT_BLOCK); |
| 1639 | release = *count; |
| 1640 | goto enospc; |
| 1641 | } |
| 1642 | #endif |
| 1643 | /* |
| 1644 | * let's increase this in prior to actual block count change in order |
| 1645 | * for f2fs_sync_file to avoid data races when deciding checkpoint. |
| 1646 | */ |
| 1647 | percpu_counter_add(&sbi->alloc_valid_block_count, (*count)); |
| 1648 | |
| 1649 | spin_lock(&sbi->stat_lock); |
| 1650 | sbi->total_valid_block_count += (block_t)(*count); |
| 1651 | avail_user_block_count = sbi->user_block_count - |
| 1652 | sbi->current_reserved_blocks; |
| 1653 | if (unlikely(sbi->total_valid_block_count > avail_user_block_count)) { |
| 1654 | diff = sbi->total_valid_block_count - avail_user_block_count; |
| 1655 | *count -= diff; |
| 1656 | release = diff; |
| 1657 | sbi->total_valid_block_count = avail_user_block_count; |
| 1658 | if (!*count) { |
| 1659 | spin_unlock(&sbi->stat_lock); |
| 1660 | percpu_counter_sub(&sbi->alloc_valid_block_count, diff); |
| 1661 | goto enospc; |
| 1662 | } |
| 1663 | } |
| 1664 | spin_unlock(&sbi->stat_lock); |
| 1665 | |
| 1666 | if (release) |
| 1667 | dquot_release_reservation_block(inode, release); |
| 1668 | f2fs_i_blocks_write(inode, *count, true, true); |
| 1669 | return 0; |
| 1670 | |
| 1671 | enospc: |
| 1672 | dquot_release_reservation_block(inode, release); |
| 1673 | return -ENOSPC; |
| 1674 | } |
| 1675 | |
| 1676 | static inline void dec_valid_block_count(struct f2fs_sb_info *sbi, |
| 1677 | struct inode *inode, |
| 1678 | block_t count) |
| 1679 | { |
| 1680 | blkcnt_t sectors = count << F2FS_LOG_SECTORS_PER_BLOCK; |
| 1681 | |
| 1682 | spin_lock(&sbi->stat_lock); |
| 1683 | f2fs_bug_on(sbi, sbi->total_valid_block_count < (block_t) count); |
| 1684 | f2fs_bug_on(sbi, inode->i_blocks < sectors); |
| 1685 | sbi->total_valid_block_count -= (block_t)count; |
| 1686 | if (sbi->reserved_blocks && |
| 1687 | sbi->current_reserved_blocks < sbi->reserved_blocks) |
| 1688 | sbi->current_reserved_blocks = min(sbi->reserved_blocks, |
| 1689 | sbi->current_reserved_blocks + count); |
| 1690 | spin_unlock(&sbi->stat_lock); |
| 1691 | f2fs_i_blocks_write(inode, count, false, true); |
| 1692 | } |
| 1693 | |
| 1694 | static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type) |
| 1695 | { |
| 1696 | atomic_inc(&sbi->nr_pages[count_type]); |
| 1697 | |
| 1698 | if (count_type == F2FS_DIRTY_DATA || count_type == F2FS_INMEM_PAGES || |
| 1699 | count_type == F2FS_WB_CP_DATA || count_type == F2FS_WB_DATA) |
| 1700 | return; |
| 1701 | |
| 1702 | set_sbi_flag(sbi, SBI_IS_DIRTY); |
| 1703 | } |
| 1704 | |
| 1705 | static inline void inode_inc_dirty_pages(struct inode *inode) |
| 1706 | { |
| 1707 | atomic_inc(&F2FS_I(inode)->dirty_pages); |
| 1708 | inc_page_count(F2FS_I_SB(inode), S_ISDIR(inode->i_mode) ? |
| 1709 | F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA); |
| 1710 | if (IS_NOQUOTA(inode)) |
| 1711 | inc_page_count(F2FS_I_SB(inode), F2FS_DIRTY_QDATA); |
| 1712 | } |
| 1713 | |
| 1714 | static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type) |
| 1715 | { |
| 1716 | atomic_dec(&sbi->nr_pages[count_type]); |
| 1717 | } |
| 1718 | |
| 1719 | static inline void inode_dec_dirty_pages(struct inode *inode) |
| 1720 | { |
| 1721 | if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) && |
| 1722 | !S_ISLNK(inode->i_mode)) |
| 1723 | return; |
| 1724 | |
| 1725 | atomic_dec(&F2FS_I(inode)->dirty_pages); |
| 1726 | dec_page_count(F2FS_I_SB(inode), S_ISDIR(inode->i_mode) ? |
| 1727 | F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA); |
| 1728 | if (IS_NOQUOTA(inode)) |
| 1729 | dec_page_count(F2FS_I_SB(inode), F2FS_DIRTY_QDATA); |
| 1730 | } |
| 1731 | |
| 1732 | static inline s64 get_pages(struct f2fs_sb_info *sbi, int count_type) |
| 1733 | { |
| 1734 | return atomic_read(&sbi->nr_pages[count_type]); |
| 1735 | } |
| 1736 | |
| 1737 | static inline int get_dirty_pages(struct inode *inode) |
| 1738 | { |
| 1739 | return atomic_read(&F2FS_I(inode)->dirty_pages); |
| 1740 | } |
| 1741 | |
| 1742 | static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type) |
| 1743 | { |
| 1744 | unsigned int pages_per_sec = sbi->segs_per_sec * sbi->blocks_per_seg; |
| 1745 | unsigned int segs = (get_pages(sbi, block_type) + pages_per_sec - 1) >> |
| 1746 | sbi->log_blocks_per_seg; |
| 1747 | |
| 1748 | return segs / sbi->segs_per_sec; |
| 1749 | } |
| 1750 | |
| 1751 | static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi) |
| 1752 | { |
| 1753 | return sbi->total_valid_block_count; |
| 1754 | } |
| 1755 | |
| 1756 | static inline block_t discard_blocks(struct f2fs_sb_info *sbi) |
| 1757 | { |
| 1758 | return sbi->discard_blks; |
| 1759 | } |
| 1760 | |
| 1761 | static inline unsigned long __bitmap_size(struct f2fs_sb_info *sbi, int flag) |
| 1762 | { |
| 1763 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); |
| 1764 | |
| 1765 | /* return NAT or SIT bitmap */ |
| 1766 | if (flag == NAT_BITMAP) |
| 1767 | return le32_to_cpu(ckpt->nat_ver_bitmap_bytesize); |
| 1768 | else if (flag == SIT_BITMAP) |
| 1769 | return le32_to_cpu(ckpt->sit_ver_bitmap_bytesize); |
| 1770 | |
| 1771 | return 0; |
| 1772 | } |
| 1773 | |
| 1774 | static inline block_t __cp_payload(struct f2fs_sb_info *sbi) |
| 1775 | { |
| 1776 | return le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload); |
| 1777 | } |
| 1778 | |
| 1779 | static inline void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag) |
| 1780 | { |
| 1781 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); |
| 1782 | int offset; |
| 1783 | |
| 1784 | if (__cp_payload(sbi) > 0) { |
| 1785 | if (flag == NAT_BITMAP) |
| 1786 | return &ckpt->sit_nat_version_bitmap; |
| 1787 | else |
| 1788 | return (unsigned char *)ckpt + F2FS_BLKSIZE; |
| 1789 | } else { |
| 1790 | offset = (flag == NAT_BITMAP) ? |
| 1791 | le32_to_cpu(ckpt->sit_ver_bitmap_bytesize) : 0; |
| 1792 | return &ckpt->sit_nat_version_bitmap + offset; |
| 1793 | } |
| 1794 | } |
| 1795 | |
| 1796 | static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi) |
| 1797 | { |
| 1798 | block_t start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr); |
| 1799 | |
| 1800 | if (sbi->cur_cp_pack == 2) |
| 1801 | start_addr += sbi->blocks_per_seg; |
| 1802 | return start_addr; |
| 1803 | } |
| 1804 | |
| 1805 | static inline block_t __start_cp_next_addr(struct f2fs_sb_info *sbi) |
| 1806 | { |
| 1807 | block_t start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr); |
| 1808 | |
| 1809 | if (sbi->cur_cp_pack == 1) |
| 1810 | start_addr += sbi->blocks_per_seg; |
| 1811 | return start_addr; |
| 1812 | } |
| 1813 | |
| 1814 | static inline void __set_cp_next_pack(struct f2fs_sb_info *sbi) |
| 1815 | { |
| 1816 | sbi->cur_cp_pack = (sbi->cur_cp_pack == 1) ? 2 : 1; |
| 1817 | } |
| 1818 | |
| 1819 | static inline block_t __start_sum_addr(struct f2fs_sb_info *sbi) |
| 1820 | { |
| 1821 | return le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum); |
| 1822 | } |
| 1823 | |
| 1824 | static inline int inc_valid_node_count(struct f2fs_sb_info *sbi, |
| 1825 | struct inode *inode, bool is_inode) |
| 1826 | { |
| 1827 | block_t valid_block_count; |
| 1828 | unsigned int valid_node_count; |
| 1829 | bool quota = inode && !is_inode; |
| 1830 | |
| 1831 | if (quota) { |
| 1832 | int ret = dquot_reserve_block(inode, 1); |
| 1833 | if (ret) |
| 1834 | return ret; |
| 1835 | } |
| 1836 | |
| 1837 | #ifdef CONFIG_F2FS_FAULT_INJECTION |
| 1838 | if (time_to_inject(sbi, FAULT_BLOCK)) { |
| 1839 | f2fs_show_injection_info(FAULT_BLOCK); |
| 1840 | goto enospc; |
| 1841 | } |
| 1842 | #endif |
| 1843 | |
| 1844 | spin_lock(&sbi->stat_lock); |
| 1845 | |
| 1846 | valid_block_count = sbi->total_valid_block_count + 1; |
| 1847 | if (unlikely(valid_block_count + sbi->current_reserved_blocks > |
| 1848 | sbi->user_block_count)) { |
| 1849 | spin_unlock(&sbi->stat_lock); |
| 1850 | goto enospc; |
| 1851 | } |
| 1852 | |
| 1853 | valid_node_count = sbi->total_valid_node_count + 1; |
| 1854 | if (unlikely(valid_node_count > sbi->total_node_count)) { |
| 1855 | spin_unlock(&sbi->stat_lock); |
| 1856 | goto enospc; |
| 1857 | } |
| 1858 | |
| 1859 | sbi->total_valid_node_count++; |
| 1860 | sbi->total_valid_block_count++; |
| 1861 | spin_unlock(&sbi->stat_lock); |
| 1862 | |
| 1863 | if (inode) { |
| 1864 | if (is_inode) |
| 1865 | f2fs_mark_inode_dirty_sync(inode, true); |
| 1866 | else |
| 1867 | f2fs_i_blocks_write(inode, 1, true, true); |
| 1868 | } |
| 1869 | |
| 1870 | percpu_counter_inc(&sbi->alloc_valid_block_count); |
| 1871 | return 0; |
| 1872 | |
| 1873 | enospc: |
| 1874 | if (quota) |
| 1875 | dquot_release_reservation_block(inode, 1); |
| 1876 | return -ENOSPC; |
| 1877 | } |
| 1878 | |
| 1879 | static inline void dec_valid_node_count(struct f2fs_sb_info *sbi, |
| 1880 | struct inode *inode, bool is_inode) |
| 1881 | { |
| 1882 | spin_lock(&sbi->stat_lock); |
| 1883 | |
| 1884 | f2fs_bug_on(sbi, !sbi->total_valid_block_count); |
| 1885 | f2fs_bug_on(sbi, !sbi->total_valid_node_count); |
| 1886 | f2fs_bug_on(sbi, !is_inode && !inode->i_blocks); |
| 1887 | |
| 1888 | sbi->total_valid_node_count--; |
| 1889 | sbi->total_valid_block_count--; |
| 1890 | if (sbi->reserved_blocks && |
| 1891 | sbi->current_reserved_blocks < sbi->reserved_blocks) |
| 1892 | sbi->current_reserved_blocks++; |
| 1893 | |
| 1894 | spin_unlock(&sbi->stat_lock); |
| 1895 | |
| 1896 | if (!is_inode) |
| 1897 | f2fs_i_blocks_write(inode, 1, false, true); |
| 1898 | } |
| 1899 | |
| 1900 | static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi) |
| 1901 | { |
| 1902 | return sbi->total_valid_node_count; |
| 1903 | } |
| 1904 | |
| 1905 | static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi) |
| 1906 | { |
| 1907 | percpu_counter_inc(&sbi->total_valid_inode_count); |
| 1908 | } |
| 1909 | |
| 1910 | static inline void dec_valid_inode_count(struct f2fs_sb_info *sbi) |
| 1911 | { |
| 1912 | percpu_counter_dec(&sbi->total_valid_inode_count); |
| 1913 | } |
| 1914 | |
| 1915 | static inline s64 valid_inode_count(struct f2fs_sb_info *sbi) |
| 1916 | { |
| 1917 | return percpu_counter_sum_positive(&sbi->total_valid_inode_count); |
| 1918 | } |
| 1919 | |
| 1920 | static inline struct page *f2fs_grab_cache_page(struct address_space *mapping, |
| 1921 | pgoff_t index, bool for_write) |
| 1922 | { |
| 1923 | #ifdef CONFIG_F2FS_FAULT_INJECTION |
| 1924 | struct page *page = find_lock_page(mapping, index); |
| 1925 | |
| 1926 | if (page) |
| 1927 | return page; |
| 1928 | |
| 1929 | if (time_to_inject(F2FS_M_SB(mapping), FAULT_PAGE_ALLOC)) { |
| 1930 | f2fs_show_injection_info(FAULT_PAGE_ALLOC); |
| 1931 | return NULL; |
| 1932 | } |
| 1933 | #endif |
| 1934 | if (!for_write) |
| 1935 | return grab_cache_page(mapping, index); |
| 1936 | return grab_cache_page_write_begin(mapping, index, AOP_FLAG_NOFS); |
| 1937 | } |
| 1938 | |
| 1939 | static inline struct page *f2fs_pagecache_get_page( |
| 1940 | struct address_space *mapping, pgoff_t index, |
| 1941 | int fgp_flags, gfp_t gfp_mask) |
| 1942 | { |
| 1943 | #ifdef CONFIG_F2FS_FAULT_INJECTION |
| 1944 | if (time_to_inject(F2FS_M_SB(mapping), FAULT_PAGE_GET)) { |
| 1945 | f2fs_show_injection_info(FAULT_PAGE_GET); |
| 1946 | return NULL; |
| 1947 | } |
| 1948 | #endif |
| 1949 | return pagecache_get_page(mapping, index, fgp_flags, gfp_mask); |
| 1950 | } |
| 1951 | |
| 1952 | static inline void f2fs_copy_page(struct page *src, struct page *dst) |
| 1953 | { |
| 1954 | char *src_kaddr = kmap(src); |
| 1955 | char *dst_kaddr = kmap(dst); |
| 1956 | |
| 1957 | memcpy(dst_kaddr, src_kaddr, PAGE_SIZE); |
| 1958 | kunmap(dst); |
| 1959 | kunmap(src); |
| 1960 | } |
| 1961 | |
| 1962 | static inline void f2fs_put_page(struct page *page, int unlock) |
| 1963 | { |
| 1964 | if (!page) |
| 1965 | return; |
| 1966 | |
| 1967 | if (unlock) { |
| 1968 | f2fs_bug_on(F2FS_P_SB(page), !PageLocked(page)); |
| 1969 | unlock_page(page); |
| 1970 | } |
| 1971 | put_page(page); |
| 1972 | } |
| 1973 | |
| 1974 | static inline void f2fs_put_dnode(struct dnode_of_data *dn) |
| 1975 | { |
| 1976 | if (dn->node_page) |
| 1977 | f2fs_put_page(dn->node_page, 1); |
| 1978 | if (dn->inode_page && dn->node_page != dn->inode_page) |
| 1979 | f2fs_put_page(dn->inode_page, 0); |
| 1980 | dn->node_page = NULL; |
| 1981 | dn->inode_page = NULL; |
| 1982 | } |
| 1983 | |
| 1984 | static inline struct kmem_cache *f2fs_kmem_cache_create(const char *name, |
| 1985 | size_t size) |
| 1986 | { |
| 1987 | return kmem_cache_create(name, size, 0, SLAB_RECLAIM_ACCOUNT, NULL); |
| 1988 | } |
| 1989 | |
| 1990 | static inline void *f2fs_kmem_cache_alloc(struct kmem_cache *cachep, |
| 1991 | gfp_t flags) |
| 1992 | { |
| 1993 | void *entry; |
| 1994 | |
| 1995 | entry = kmem_cache_alloc(cachep, flags); |
| 1996 | if (!entry) |
| 1997 | entry = kmem_cache_alloc(cachep, flags | __GFP_NOFAIL); |
| 1998 | return entry; |
| 1999 | } |
| 2000 | |
| 2001 | static inline struct bio *f2fs_bio_alloc(struct f2fs_sb_info *sbi, |
| 2002 | int npages, bool no_fail) |
| 2003 | { |
| 2004 | struct bio *bio; |
| 2005 | |
| 2006 | if (no_fail) { |
| 2007 | /* No failure on bio allocation */ |
| 2008 | bio = bio_alloc(GFP_NOIO, npages); |
| 2009 | if (!bio) |
| 2010 | bio = bio_alloc(GFP_NOIO | __GFP_NOFAIL, npages); |
| 2011 | return bio; |
| 2012 | } |
| 2013 | #ifdef CONFIG_F2FS_FAULT_INJECTION |
| 2014 | if (time_to_inject(sbi, FAULT_ALLOC_BIO)) { |
| 2015 | f2fs_show_injection_info(FAULT_ALLOC_BIO); |
| 2016 | return NULL; |
| 2017 | } |
| 2018 | #endif |
| 2019 | return bio_alloc(GFP_KERNEL, npages); |
| 2020 | } |
| 2021 | |
| 2022 | static inline void f2fs_radix_tree_insert(struct radix_tree_root *root, |
| 2023 | unsigned long index, void *item) |
| 2024 | { |
| 2025 | while (radix_tree_insert(root, index, item)) |
| 2026 | cond_resched(); |
| 2027 | } |
| 2028 | |
| 2029 | #define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino) |
| 2030 | |
| 2031 | static inline bool IS_INODE(struct page *page) |
| 2032 | { |
| 2033 | struct f2fs_node *p = F2FS_NODE(page); |
| 2034 | |
| 2035 | return RAW_IS_INODE(p); |
| 2036 | } |
| 2037 | |
| 2038 | static inline int offset_in_addr(struct f2fs_inode *i) |
| 2039 | { |
| 2040 | return (i->i_inline & F2FS_EXTRA_ATTR) ? |
| 2041 | (le16_to_cpu(i->i_extra_isize) / sizeof(__le32)) : 0; |
| 2042 | } |
| 2043 | |
| 2044 | static inline __le32 *blkaddr_in_node(struct f2fs_node *node) |
| 2045 | { |
| 2046 | return RAW_IS_INODE(node) ? node->i.i_addr : node->dn.addr; |
| 2047 | } |
| 2048 | |
| 2049 | static inline int f2fs_has_extra_attr(struct inode *inode); |
| 2050 | static inline block_t datablock_addr(struct inode *inode, |
| 2051 | struct page *node_page, unsigned int offset) |
| 2052 | { |
| 2053 | struct f2fs_node *raw_node; |
| 2054 | __le32 *addr_array; |
| 2055 | int base = 0; |
| 2056 | bool is_inode = IS_INODE(node_page); |
| 2057 | |
| 2058 | raw_node = F2FS_NODE(node_page); |
| 2059 | |
| 2060 | /* from GC path only */ |
| 2061 | if (!inode) { |
| 2062 | if (is_inode) |
| 2063 | base = offset_in_addr(&raw_node->i); |
| 2064 | } else if (f2fs_has_extra_attr(inode) && is_inode) { |
| 2065 | base = get_extra_isize(inode); |
| 2066 | } |
| 2067 | |
| 2068 | addr_array = blkaddr_in_node(raw_node); |
| 2069 | return le32_to_cpu(addr_array[base + offset]); |
| 2070 | } |
| 2071 | |
| 2072 | static inline int f2fs_test_bit(unsigned int nr, char *addr) |
| 2073 | { |
| 2074 | int mask; |
| 2075 | |
| 2076 | addr += (nr >> 3); |
| 2077 | mask = 1 << (7 - (nr & 0x07)); |
| 2078 | return mask & *addr; |
| 2079 | } |
| 2080 | |
| 2081 | static inline void f2fs_set_bit(unsigned int nr, char *addr) |
| 2082 | { |
| 2083 | int mask; |
| 2084 | |
| 2085 | addr += (nr >> 3); |
| 2086 | mask = 1 << (7 - (nr & 0x07)); |
| 2087 | *addr |= mask; |
| 2088 | } |
| 2089 | |
| 2090 | static inline void f2fs_clear_bit(unsigned int nr, char *addr) |
| 2091 | { |
| 2092 | int mask; |
| 2093 | |
| 2094 | addr += (nr >> 3); |
| 2095 | mask = 1 << (7 - (nr & 0x07)); |
| 2096 | *addr &= ~mask; |
| 2097 | } |
| 2098 | |
| 2099 | static inline int f2fs_test_and_set_bit(unsigned int nr, char *addr) |
| 2100 | { |
| 2101 | int mask; |
| 2102 | int ret; |
| 2103 | |
| 2104 | addr += (nr >> 3); |
| 2105 | mask = 1 << (7 - (nr & 0x07)); |
| 2106 | ret = mask & *addr; |
| 2107 | *addr |= mask; |
| 2108 | return ret; |
| 2109 | } |
| 2110 | |
| 2111 | static inline int f2fs_test_and_clear_bit(unsigned int nr, char *addr) |
| 2112 | { |
| 2113 | int mask; |
| 2114 | int ret; |
| 2115 | |
| 2116 | addr += (nr >> 3); |
| 2117 | mask = 1 << (7 - (nr & 0x07)); |
| 2118 | ret = mask & *addr; |
| 2119 | *addr &= ~mask; |
| 2120 | return ret; |
| 2121 | } |
| 2122 | |
| 2123 | static inline void f2fs_change_bit(unsigned int nr, char *addr) |
| 2124 | { |
| 2125 | int mask; |
| 2126 | |
| 2127 | addr += (nr >> 3); |
| 2128 | mask = 1 << (7 - (nr & 0x07)); |
| 2129 | *addr ^= mask; |
| 2130 | } |
| 2131 | |
| 2132 | #define F2FS_REG_FLMASK (~(FS_DIRSYNC_FL | FS_TOPDIR_FL)) |
| 2133 | #define F2FS_OTHER_FLMASK (FS_NODUMP_FL | FS_NOATIME_FL) |
| 2134 | #define F2FS_FL_INHERITED (FS_PROJINHERIT_FL) |
| 2135 | |
| 2136 | static inline __u32 f2fs_mask_flags(umode_t mode, __u32 flags) |
| 2137 | { |
| 2138 | if (S_ISDIR(mode)) |
| 2139 | return flags; |
| 2140 | else if (S_ISREG(mode)) |
| 2141 | return flags & F2FS_REG_FLMASK; |
| 2142 | else |
| 2143 | return flags & F2FS_OTHER_FLMASK; |
| 2144 | } |
| 2145 | |
| 2146 | /* used for f2fs_inode_info->flags */ |
| 2147 | enum { |
| 2148 | FI_NEW_INODE, /* indicate newly allocated inode */ |
| 2149 | FI_DIRTY_INODE, /* indicate inode is dirty or not */ |
| 2150 | FI_AUTO_RECOVER, /* indicate inode is recoverable */ |
| 2151 | FI_DIRTY_DIR, /* indicate directory has dirty pages */ |
| 2152 | FI_INC_LINK, /* need to increment i_nlink */ |
| 2153 | FI_ACL_MODE, /* indicate acl mode */ |
| 2154 | FI_NO_ALLOC, /* should not allocate any blocks */ |
| 2155 | FI_FREE_NID, /* free allocated nide */ |
| 2156 | FI_NO_EXTENT, /* not to use the extent cache */ |
| 2157 | FI_INLINE_XATTR, /* used for inline xattr */ |
| 2158 | FI_INLINE_DATA, /* used for inline data*/ |
| 2159 | FI_INLINE_DENTRY, /* used for inline dentry */ |
| 2160 | FI_APPEND_WRITE, /* inode has appended data */ |
| 2161 | FI_UPDATE_WRITE, /* inode has in-place-update data */ |
| 2162 | FI_NEED_IPU, /* used for ipu per file */ |
| 2163 | FI_ATOMIC_FILE, /* indicate atomic file */ |
| 2164 | FI_ATOMIC_COMMIT, /* indicate the state of atomical committing */ |
| 2165 | FI_VOLATILE_FILE, /* indicate volatile file */ |
| 2166 | FI_FIRST_BLOCK_WRITTEN, /* indicate #0 data block was written */ |
| 2167 | FI_DROP_CACHE, /* drop dirty page cache */ |
| 2168 | FI_DATA_EXIST, /* indicate data exists */ |
| 2169 | FI_INLINE_DOTS, /* indicate inline dot dentries */ |
| 2170 | FI_DO_DEFRAG, /* indicate defragment is running */ |
| 2171 | FI_DIRTY_FILE, /* indicate regular/symlink has dirty pages */ |
| 2172 | FI_NO_PREALLOC, /* indicate skipped preallocated blocks */ |
| 2173 | FI_HOT_DATA, /* indicate file is hot */ |
| 2174 | FI_EXTRA_ATTR, /* indicate file has extra attribute */ |
| 2175 | FI_PROJ_INHERIT, /* indicate file inherits projectid */ |
| 2176 | }; |
| 2177 | |
| 2178 | static inline void __mark_inode_dirty_flag(struct inode *inode, |
| 2179 | int flag, bool set) |
| 2180 | { |
| 2181 | switch (flag) { |
| 2182 | case FI_INLINE_XATTR: |
| 2183 | case FI_INLINE_DATA: |
| 2184 | case FI_INLINE_DENTRY: |
| 2185 | if (set) |
| 2186 | return; |
| 2187 | case FI_DATA_EXIST: |
| 2188 | case FI_INLINE_DOTS: |
| 2189 | f2fs_mark_inode_dirty_sync(inode, true); |
| 2190 | } |
| 2191 | } |
| 2192 | |
| 2193 | static inline void set_inode_flag(struct inode *inode, int flag) |
| 2194 | { |
| 2195 | if (!test_bit(flag, &F2FS_I(inode)->flags)) |
| 2196 | set_bit(flag, &F2FS_I(inode)->flags); |
| 2197 | __mark_inode_dirty_flag(inode, flag, true); |
| 2198 | } |
| 2199 | |
| 2200 | static inline int is_inode_flag_set(struct inode *inode, int flag) |
| 2201 | { |
| 2202 | return test_bit(flag, &F2FS_I(inode)->flags); |
| 2203 | } |
| 2204 | |
| 2205 | static inline void clear_inode_flag(struct inode *inode, int flag) |
| 2206 | { |
| 2207 | if (test_bit(flag, &F2FS_I(inode)->flags)) |
| 2208 | clear_bit(flag, &F2FS_I(inode)->flags); |
| 2209 | __mark_inode_dirty_flag(inode, flag, false); |
| 2210 | } |
| 2211 | |
| 2212 | static inline void set_acl_inode(struct inode *inode, umode_t mode) |
| 2213 | { |
| 2214 | F2FS_I(inode)->i_acl_mode = mode; |
| 2215 | set_inode_flag(inode, FI_ACL_MODE); |
| 2216 | f2fs_mark_inode_dirty_sync(inode, false); |
| 2217 | } |
| 2218 | |
| 2219 | static inline void f2fs_i_links_write(struct inode *inode, bool inc) |
| 2220 | { |
| 2221 | if (inc) |
| 2222 | inc_nlink(inode); |
| 2223 | else |
| 2224 | drop_nlink(inode); |
| 2225 | f2fs_mark_inode_dirty_sync(inode, true); |
| 2226 | } |
| 2227 | |
| 2228 | static inline void f2fs_i_blocks_write(struct inode *inode, |
| 2229 | block_t diff, bool add, bool claim) |
| 2230 | { |
| 2231 | bool clean = !is_inode_flag_set(inode, FI_DIRTY_INODE); |
| 2232 | bool recover = is_inode_flag_set(inode, FI_AUTO_RECOVER); |
| 2233 | |
| 2234 | /* add = 1, claim = 1 should be dquot_reserve_block in pair */ |
| 2235 | if (add) { |
| 2236 | if (claim) |
| 2237 | dquot_claim_block(inode, diff); |
| 2238 | else |
| 2239 | dquot_alloc_block_nofail(inode, diff); |
| 2240 | } else { |
| 2241 | dquot_free_block(inode, diff); |
| 2242 | } |
| 2243 | |
| 2244 | f2fs_mark_inode_dirty_sync(inode, true); |
| 2245 | if (clean || recover) |
| 2246 | set_inode_flag(inode, FI_AUTO_RECOVER); |
| 2247 | } |
| 2248 | |
| 2249 | static inline void f2fs_i_size_write(struct inode *inode, loff_t i_size) |
| 2250 | { |
| 2251 | bool clean = !is_inode_flag_set(inode, FI_DIRTY_INODE); |
| 2252 | bool recover = is_inode_flag_set(inode, FI_AUTO_RECOVER); |
| 2253 | |
| 2254 | if (i_size_read(inode) == i_size) |
| 2255 | return; |
| 2256 | |
| 2257 | i_size_write(inode, i_size); |
| 2258 | f2fs_mark_inode_dirty_sync(inode, true); |
| 2259 | if (clean || recover) |
| 2260 | set_inode_flag(inode, FI_AUTO_RECOVER); |
| 2261 | } |
| 2262 | |
| 2263 | static inline void f2fs_i_depth_write(struct inode *inode, unsigned int depth) |
| 2264 | { |
| 2265 | F2FS_I(inode)->i_current_depth = depth; |
| 2266 | f2fs_mark_inode_dirty_sync(inode, true); |
| 2267 | } |
| 2268 | |
| 2269 | static inline void f2fs_i_xnid_write(struct inode *inode, nid_t xnid) |
| 2270 | { |
| 2271 | F2FS_I(inode)->i_xattr_nid = xnid; |
| 2272 | f2fs_mark_inode_dirty_sync(inode, true); |
| 2273 | } |
| 2274 | |
| 2275 | static inline void f2fs_i_pino_write(struct inode *inode, nid_t pino) |
| 2276 | { |
| 2277 | F2FS_I(inode)->i_pino = pino; |
| 2278 | f2fs_mark_inode_dirty_sync(inode, true); |
| 2279 | } |
| 2280 | |
| 2281 | static inline void get_inline_info(struct inode *inode, struct f2fs_inode *ri) |
| 2282 | { |
| 2283 | struct f2fs_inode_info *fi = F2FS_I(inode); |
| 2284 | |
| 2285 | if (ri->i_inline & F2FS_INLINE_XATTR) |
| 2286 | set_bit(FI_INLINE_XATTR, &fi->flags); |
| 2287 | if (ri->i_inline & F2FS_INLINE_DATA) |
| 2288 | set_bit(FI_INLINE_DATA, &fi->flags); |
| 2289 | if (ri->i_inline & F2FS_INLINE_DENTRY) |
| 2290 | set_bit(FI_INLINE_DENTRY, &fi->flags); |
| 2291 | if (ri->i_inline & F2FS_DATA_EXIST) |
| 2292 | set_bit(FI_DATA_EXIST, &fi->flags); |
| 2293 | if (ri->i_inline & F2FS_INLINE_DOTS) |
| 2294 | set_bit(FI_INLINE_DOTS, &fi->flags); |
| 2295 | if (ri->i_inline & F2FS_EXTRA_ATTR) |
| 2296 | set_bit(FI_EXTRA_ATTR, &fi->flags); |
| 2297 | } |
| 2298 | |
| 2299 | static inline void set_raw_inline(struct inode *inode, struct f2fs_inode *ri) |
| 2300 | { |
| 2301 | ri->i_inline = 0; |
| 2302 | |
| 2303 | if (is_inode_flag_set(inode, FI_INLINE_XATTR)) |
| 2304 | ri->i_inline |= F2FS_INLINE_XATTR; |
| 2305 | if (is_inode_flag_set(inode, FI_INLINE_DATA)) |
| 2306 | ri->i_inline |= F2FS_INLINE_DATA; |
| 2307 | if (is_inode_flag_set(inode, FI_INLINE_DENTRY)) |
| 2308 | ri->i_inline |= F2FS_INLINE_DENTRY; |
| 2309 | if (is_inode_flag_set(inode, FI_DATA_EXIST)) |
| 2310 | ri->i_inline |= F2FS_DATA_EXIST; |
| 2311 | if (is_inode_flag_set(inode, FI_INLINE_DOTS)) |
| 2312 | ri->i_inline |= F2FS_INLINE_DOTS; |
| 2313 | if (is_inode_flag_set(inode, FI_EXTRA_ATTR)) |
| 2314 | ri->i_inline |= F2FS_EXTRA_ATTR; |
| 2315 | } |
| 2316 | |
| 2317 | static inline int f2fs_has_extra_attr(struct inode *inode) |
| 2318 | { |
| 2319 | return is_inode_flag_set(inode, FI_EXTRA_ATTR); |
| 2320 | } |
| 2321 | |
| 2322 | static inline int f2fs_has_inline_xattr(struct inode *inode) |
| 2323 | { |
| 2324 | return is_inode_flag_set(inode, FI_INLINE_XATTR); |
| 2325 | } |
| 2326 | |
| 2327 | static inline unsigned int addrs_per_inode(struct inode *inode) |
| 2328 | { |
| 2329 | return CUR_ADDRS_PER_INODE(inode) - F2FS_INLINE_XATTR_ADDRS(inode); |
| 2330 | } |
| 2331 | |
| 2332 | static inline void *inline_xattr_addr(struct inode *inode, struct page *page) |
| 2333 | { |
| 2334 | struct f2fs_inode *ri = F2FS_INODE(page); |
| 2335 | |
| 2336 | return (void *)&(ri->i_addr[DEF_ADDRS_PER_INODE - |
| 2337 | F2FS_INLINE_XATTR_ADDRS(inode)]); |
| 2338 | } |
| 2339 | |
| 2340 | static inline int inline_xattr_size(struct inode *inode) |
| 2341 | { |
| 2342 | return get_inline_xattr_addrs(inode) * sizeof(__le32); |
| 2343 | } |
| 2344 | |
| 2345 | static inline int f2fs_has_inline_data(struct inode *inode) |
| 2346 | { |
| 2347 | return is_inode_flag_set(inode, FI_INLINE_DATA); |
| 2348 | } |
| 2349 | |
| 2350 | static inline int f2fs_exist_data(struct inode *inode) |
| 2351 | { |
| 2352 | return is_inode_flag_set(inode, FI_DATA_EXIST); |
| 2353 | } |
| 2354 | |
| 2355 | static inline int f2fs_has_inline_dots(struct inode *inode) |
| 2356 | { |
| 2357 | return is_inode_flag_set(inode, FI_INLINE_DOTS); |
| 2358 | } |
| 2359 | |
| 2360 | static inline bool f2fs_is_atomic_file(struct inode *inode) |
| 2361 | { |
| 2362 | return is_inode_flag_set(inode, FI_ATOMIC_FILE); |
| 2363 | } |
| 2364 | |
| 2365 | static inline bool f2fs_is_commit_atomic_write(struct inode *inode) |
| 2366 | { |
| 2367 | return is_inode_flag_set(inode, FI_ATOMIC_COMMIT); |
| 2368 | } |
| 2369 | |
| 2370 | static inline bool f2fs_is_volatile_file(struct inode *inode) |
| 2371 | { |
| 2372 | return is_inode_flag_set(inode, FI_VOLATILE_FILE); |
| 2373 | } |
| 2374 | |
| 2375 | static inline bool f2fs_is_first_block_written(struct inode *inode) |
| 2376 | { |
| 2377 | return is_inode_flag_set(inode, FI_FIRST_BLOCK_WRITTEN); |
| 2378 | } |
| 2379 | |
| 2380 | static inline bool f2fs_is_drop_cache(struct inode *inode) |
| 2381 | { |
| 2382 | return is_inode_flag_set(inode, FI_DROP_CACHE); |
| 2383 | } |
| 2384 | |
| 2385 | static inline void *inline_data_addr(struct inode *inode, struct page *page) |
| 2386 | { |
| 2387 | struct f2fs_inode *ri = F2FS_INODE(page); |
| 2388 | int extra_size = get_extra_isize(inode); |
| 2389 | |
| 2390 | return (void *)&(ri->i_addr[extra_size + DEF_INLINE_RESERVED_SIZE]); |
| 2391 | } |
| 2392 | |
| 2393 | static inline int f2fs_has_inline_dentry(struct inode *inode) |
| 2394 | { |
| 2395 | return is_inode_flag_set(inode, FI_INLINE_DENTRY); |
| 2396 | } |
| 2397 | |
| 2398 | static inline void f2fs_dentry_kunmap(struct inode *dir, struct page *page) |
| 2399 | { |
| 2400 | if (!f2fs_has_inline_dentry(dir)) |
| 2401 | kunmap(page); |
| 2402 | } |
| 2403 | |
| 2404 | static inline int is_file(struct inode *inode, int type) |
| 2405 | { |
| 2406 | return F2FS_I(inode)->i_advise & type; |
| 2407 | } |
| 2408 | |
| 2409 | static inline void set_file(struct inode *inode, int type) |
| 2410 | { |
| 2411 | F2FS_I(inode)->i_advise |= type; |
| 2412 | f2fs_mark_inode_dirty_sync(inode, true); |
| 2413 | } |
| 2414 | |
| 2415 | static inline void clear_file(struct inode *inode, int type) |
| 2416 | { |
| 2417 | F2FS_I(inode)->i_advise &= ~type; |
| 2418 | f2fs_mark_inode_dirty_sync(inode, true); |
| 2419 | } |
| 2420 | |
| 2421 | static inline bool f2fs_skip_inode_update(struct inode *inode, int dsync) |
| 2422 | { |
| 2423 | bool ret; |
| 2424 | |
| 2425 | if (dsync) { |
| 2426 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
| 2427 | |
| 2428 | spin_lock(&sbi->inode_lock[DIRTY_META]); |
| 2429 | ret = list_empty(&F2FS_I(inode)->gdirty_list); |
| 2430 | spin_unlock(&sbi->inode_lock[DIRTY_META]); |
| 2431 | return ret; |
| 2432 | } |
| 2433 | if (!is_inode_flag_set(inode, FI_AUTO_RECOVER) || |
| 2434 | file_keep_isize(inode) || |
| 2435 | i_size_read(inode) & PAGE_MASK) |
| 2436 | return false; |
| 2437 | |
| 2438 | down_read(&F2FS_I(inode)->i_sem); |
| 2439 | ret = F2FS_I(inode)->last_disk_size == i_size_read(inode); |
| 2440 | up_read(&F2FS_I(inode)->i_sem); |
| 2441 | |
| 2442 | return ret; |
| 2443 | } |
| 2444 | |
| 2445 | #define sb_rdonly f2fs_readonly |
| 2446 | static inline int f2fs_readonly(struct super_block *sb) |
| 2447 | { |
| 2448 | return sb->s_flags & MS_RDONLY; |
| 2449 | } |
| 2450 | |
| 2451 | static inline bool f2fs_cp_error(struct f2fs_sb_info *sbi) |
| 2452 | { |
| 2453 | return is_set_ckpt_flags(sbi, CP_ERROR_FLAG); |
| 2454 | } |
| 2455 | |
| 2456 | static inline bool is_dot_dotdot(const struct qstr *str) |
| 2457 | { |
| 2458 | if (str->len == 1 && str->name[0] == '.') |
| 2459 | return true; |
| 2460 | |
| 2461 | if (str->len == 2 && str->name[0] == '.' && str->name[1] == '.') |
| 2462 | return true; |
| 2463 | |
| 2464 | return false; |
| 2465 | } |
| 2466 | |
| 2467 | static inline bool f2fs_may_extent_tree(struct inode *inode) |
| 2468 | { |
| 2469 | if (!test_opt(F2FS_I_SB(inode), EXTENT_CACHE) || |
| 2470 | is_inode_flag_set(inode, FI_NO_EXTENT)) |
| 2471 | return false; |
| 2472 | |
| 2473 | return S_ISREG(inode->i_mode); |
| 2474 | } |
| 2475 | |
| 2476 | static inline void *f2fs_kmalloc(struct f2fs_sb_info *sbi, |
| 2477 | size_t size, gfp_t flags) |
| 2478 | { |
| 2479 | #ifdef CONFIG_F2FS_FAULT_INJECTION |
| 2480 | if (time_to_inject(sbi, FAULT_KMALLOC)) { |
| 2481 | f2fs_show_injection_info(FAULT_KMALLOC); |
| 2482 | return NULL; |
| 2483 | } |
| 2484 | #endif |
| 2485 | return kmalloc(size, flags); |
| 2486 | } |
| 2487 | |
| 2488 | static inline void *kvmalloc(size_t size, gfp_t flags) |
| 2489 | { |
| 2490 | void *ret; |
| 2491 | |
| 2492 | ret = kmalloc(size, flags | __GFP_NOWARN); |
| 2493 | if (!ret) |
| 2494 | ret = __vmalloc(size, flags, PAGE_KERNEL); |
| 2495 | return ret; |
| 2496 | } |
| 2497 | |
| 2498 | static inline void *kvzalloc(size_t size, gfp_t flags) |
| 2499 | { |
| 2500 | void *ret; |
| 2501 | |
| 2502 | ret = kzalloc(size, flags | __GFP_NOWARN); |
| 2503 | if (!ret) |
| 2504 | ret = __vmalloc(size, flags | __GFP_ZERO, PAGE_KERNEL); |
| 2505 | return ret; |
| 2506 | } |
| 2507 | |
| 2508 | static inline int get_extra_isize(struct inode *inode) |
| 2509 | { |
| 2510 | return F2FS_I(inode)->i_extra_isize / sizeof(__le32); |
| 2511 | } |
| 2512 | |
| 2513 | static inline int f2fs_sb_has_flexible_inline_xattr(struct super_block *sb); |
| 2514 | static inline int get_inline_xattr_addrs(struct inode *inode) |
| 2515 | { |
| 2516 | return F2FS_I(inode)->i_inline_xattr_size; |
| 2517 | } |
| 2518 | |
| 2519 | #define get_inode_mode(i) \ |
| 2520 | ((is_inode_flag_set(i, FI_ACL_MODE)) ? \ |
| 2521 | (F2FS_I(i)->i_acl_mode) : ((i)->i_mode)) |
| 2522 | |
| 2523 | #define F2FS_TOTAL_EXTRA_ATTR_SIZE \ |
| 2524 | (offsetof(struct f2fs_inode, i_extra_end) - \ |
| 2525 | offsetof(struct f2fs_inode, i_extra_isize)) \ |
| 2526 | |
| 2527 | #define F2FS_OLD_ATTRIBUTE_SIZE (offsetof(struct f2fs_inode, i_addr)) |
| 2528 | #define F2FS_FITS_IN_INODE(f2fs_inode, extra_isize, field) \ |
| 2529 | ((offsetof(typeof(*f2fs_inode), field) + \ |
| 2530 | sizeof((f2fs_inode)->field)) \ |
| 2531 | <= (F2FS_OLD_ATTRIBUTE_SIZE + extra_isize)) \ |
| 2532 | |
| 2533 | static inline void f2fs_reset_iostat(struct f2fs_sb_info *sbi) |
| 2534 | { |
| 2535 | int i; |
| 2536 | |
| 2537 | spin_lock(&sbi->iostat_lock); |
| 2538 | for (i = 0; i < NR_IO_TYPE; i++) |
| 2539 | sbi->write_iostat[i] = 0; |
| 2540 | spin_unlock(&sbi->iostat_lock); |
| 2541 | } |
| 2542 | |
| 2543 | static inline void f2fs_update_iostat(struct f2fs_sb_info *sbi, |
| 2544 | enum iostat_type type, unsigned long long io_bytes) |
| 2545 | { |
| 2546 | if (!sbi->iostat_enable) |
| 2547 | return; |
| 2548 | spin_lock(&sbi->iostat_lock); |
| 2549 | sbi->write_iostat[type] += io_bytes; |
| 2550 | |
| 2551 | if (type == APP_WRITE_IO || type == APP_DIRECT_IO) |
| 2552 | sbi->write_iostat[APP_BUFFERED_IO] = |
| 2553 | sbi->write_iostat[APP_WRITE_IO] - |
| 2554 | sbi->write_iostat[APP_DIRECT_IO]; |
| 2555 | spin_unlock(&sbi->iostat_lock); |
| 2556 | } |
| 2557 | |
| 2558 | /* |
| 2559 | * file.c |
| 2560 | */ |
| 2561 | int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync); |
| 2562 | void truncate_data_blocks(struct dnode_of_data *dn); |
| 2563 | int truncate_blocks(struct inode *inode, u64 from, bool lock); |
| 2564 | int f2fs_truncate(struct inode *inode); |
| 2565 | int f2fs_getattr(struct vfsmount *mnt, struct dentry *dentry, |
| 2566 | struct kstat *stat); |
| 2567 | int f2fs_setattr(struct dentry *dentry, struct iattr *attr); |
| 2568 | int truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end); |
| 2569 | int truncate_data_blocks_range(struct dnode_of_data *dn, int count); |
| 2570 | long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg); |
| 2571 | long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg); |
| 2572 | |
| 2573 | /* |
| 2574 | * inode.c |
| 2575 | */ |
| 2576 | void f2fs_set_inode_flags(struct inode *inode); |
| 2577 | bool f2fs_inode_chksum_verify(struct f2fs_sb_info *sbi, struct page *page); |
| 2578 | void f2fs_inode_chksum_set(struct f2fs_sb_info *sbi, struct page *page); |
| 2579 | struct inode *f2fs_iget(struct super_block *sb, unsigned long ino); |
| 2580 | struct inode *f2fs_iget_retry(struct super_block *sb, unsigned long ino); |
| 2581 | int try_to_free_nats(struct f2fs_sb_info *sbi, int nr_shrink); |
| 2582 | int update_inode(struct inode *inode, struct page *node_page); |
| 2583 | int update_inode_page(struct inode *inode); |
| 2584 | int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc); |
| 2585 | void f2fs_evict_inode(struct inode *inode); |
| 2586 | void handle_failed_inode(struct inode *inode); |
| 2587 | |
| 2588 | /* |
| 2589 | * namei.c |
| 2590 | */ |
| 2591 | struct dentry *f2fs_get_parent(struct dentry *child); |
| 2592 | |
| 2593 | /* |
| 2594 | * dir.c |
| 2595 | */ |
| 2596 | void set_de_type(struct f2fs_dir_entry *de, umode_t mode); |
| 2597 | unsigned char get_de_type(struct f2fs_dir_entry *de); |
| 2598 | struct f2fs_dir_entry *find_target_dentry(struct fscrypt_name *fname, |
| 2599 | f2fs_hash_t namehash, int *max_slots, |
| 2600 | struct f2fs_dentry_ptr *d); |
| 2601 | int f2fs_fill_dentries(struct dir_context *ctx, struct f2fs_dentry_ptr *d, |
| 2602 | unsigned int start_pos, struct fscrypt_str *fstr); |
| 2603 | void do_make_empty_dir(struct inode *inode, struct inode *parent, |
| 2604 | struct f2fs_dentry_ptr *d); |
| 2605 | struct page *init_inode_metadata(struct inode *inode, struct inode *dir, |
| 2606 | const struct qstr *new_name, |
| 2607 | const struct qstr *orig_name, struct page *dpage); |
| 2608 | void update_parent_metadata(struct inode *dir, struct inode *inode, |
| 2609 | unsigned int current_depth); |
| 2610 | int room_for_filename(const void *bitmap, int slots, int max_slots); |
| 2611 | void f2fs_drop_nlink(struct inode *dir, struct inode *inode); |
| 2612 | struct f2fs_dir_entry *__f2fs_find_entry(struct inode *dir, |
| 2613 | struct fscrypt_name *fname, struct page **res_page); |
| 2614 | struct f2fs_dir_entry *f2fs_find_entry(struct inode *dir, |
| 2615 | const struct qstr *child, struct page **res_page); |
| 2616 | struct f2fs_dir_entry *f2fs_parent_dir(struct inode *dir, struct page **p); |
| 2617 | ino_t f2fs_inode_by_name(struct inode *dir, const struct qstr *qstr, |
| 2618 | struct page **page); |
| 2619 | void f2fs_set_link(struct inode *dir, struct f2fs_dir_entry *de, |
| 2620 | struct page *page, struct inode *inode); |
| 2621 | void f2fs_update_dentry(nid_t ino, umode_t mode, struct f2fs_dentry_ptr *d, |
| 2622 | const struct qstr *name, f2fs_hash_t name_hash, |
| 2623 | unsigned int bit_pos); |
| 2624 | int f2fs_add_regular_entry(struct inode *dir, const struct qstr *new_name, |
| 2625 | const struct qstr *orig_name, |
| 2626 | struct inode *inode, nid_t ino, umode_t mode); |
| 2627 | int __f2fs_do_add_link(struct inode *dir, struct fscrypt_name *fname, |
| 2628 | struct inode *inode, nid_t ino, umode_t mode); |
| 2629 | int __f2fs_add_link(struct inode *dir, const struct qstr *name, |
| 2630 | struct inode *inode, nid_t ino, umode_t mode); |
| 2631 | void f2fs_delete_entry(struct f2fs_dir_entry *dentry, struct page *page, |
| 2632 | struct inode *dir, struct inode *inode); |
| 2633 | int f2fs_do_tmpfile(struct inode *inode, struct inode *dir); |
| 2634 | bool f2fs_empty_dir(struct inode *dir); |
| 2635 | |
| 2636 | static inline int f2fs_add_link(struct dentry *dentry, struct inode *inode) |
| 2637 | { |
| 2638 | return __f2fs_add_link(d_inode(dentry->d_parent), &dentry->d_name, |
| 2639 | inode, inode->i_ino, inode->i_mode); |
| 2640 | } |
| 2641 | |
| 2642 | /* |
| 2643 | * super.c |
| 2644 | */ |
| 2645 | int f2fs_inode_dirtied(struct inode *inode, bool sync); |
| 2646 | void f2fs_inode_synced(struct inode *inode); |
| 2647 | int f2fs_enable_quota_files(struct f2fs_sb_info *sbi, bool rdonly); |
| 2648 | void f2fs_quota_off_umount(struct super_block *sb); |
| 2649 | int f2fs_commit_super(struct f2fs_sb_info *sbi, bool recover); |
| 2650 | int f2fs_sync_fs(struct super_block *sb, int sync); |
| 2651 | extern __printf(3, 4) |
| 2652 | void f2fs_msg(struct super_block *sb, const char *level, const char *fmt, ...); |
| 2653 | int sanity_check_ckpt(struct f2fs_sb_info *sbi); |
| 2654 | |
| 2655 | /* |
| 2656 | * hash.c |
| 2657 | */ |
| 2658 | f2fs_hash_t f2fs_dentry_hash(const struct qstr *name_info, |
| 2659 | struct fscrypt_name *fname); |
| 2660 | |
| 2661 | /* |
| 2662 | * node.c |
| 2663 | */ |
| 2664 | struct dnode_of_data; |
| 2665 | struct node_info; |
| 2666 | |
| 2667 | bool available_free_memory(struct f2fs_sb_info *sbi, int type); |
| 2668 | int need_dentry_mark(struct f2fs_sb_info *sbi, nid_t nid); |
| 2669 | bool is_checkpointed_node(struct f2fs_sb_info *sbi, nid_t nid); |
| 2670 | bool need_inode_block_update(struct f2fs_sb_info *sbi, nid_t ino); |
| 2671 | void get_node_info(struct f2fs_sb_info *sbi, nid_t nid, struct node_info *ni); |
| 2672 | pgoff_t get_next_page_offset(struct dnode_of_data *dn, pgoff_t pgofs); |
| 2673 | int get_dnode_of_data(struct dnode_of_data *dn, pgoff_t index, int mode); |
| 2674 | int truncate_inode_blocks(struct inode *inode, pgoff_t from); |
| 2675 | int truncate_xattr_node(struct inode *inode); |
| 2676 | int wait_on_node_pages_writeback(struct f2fs_sb_info *sbi, nid_t ino); |
| 2677 | int remove_inode_page(struct inode *inode); |
| 2678 | struct page *new_inode_page(struct inode *inode); |
| 2679 | struct page *new_node_page(struct dnode_of_data *dn, unsigned int ofs); |
| 2680 | void ra_node_page(struct f2fs_sb_info *sbi, nid_t nid); |
| 2681 | struct page *get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid); |
| 2682 | struct page *get_node_page_ra(struct page *parent, int start); |
| 2683 | void move_node_page(struct page *node_page, int gc_type); |
| 2684 | int fsync_node_pages(struct f2fs_sb_info *sbi, struct inode *inode, |
| 2685 | struct writeback_control *wbc, bool atomic); |
| 2686 | int sync_node_pages(struct f2fs_sb_info *sbi, struct writeback_control *wbc, |
| 2687 | bool do_balance, enum iostat_type io_type); |
| 2688 | void build_free_nids(struct f2fs_sb_info *sbi, bool sync, bool mount); |
| 2689 | bool alloc_nid(struct f2fs_sb_info *sbi, nid_t *nid); |
| 2690 | void alloc_nid_done(struct f2fs_sb_info *sbi, nid_t nid); |
| 2691 | void alloc_nid_failed(struct f2fs_sb_info *sbi, nid_t nid); |
| 2692 | int try_to_free_nids(struct f2fs_sb_info *sbi, int nr_shrink); |
| 2693 | void recover_inline_xattr(struct inode *inode, struct page *page); |
| 2694 | int recover_xattr_data(struct inode *inode, struct page *page, |
| 2695 | block_t blkaddr); |
| 2696 | int recover_inode_page(struct f2fs_sb_info *sbi, struct page *page); |
| 2697 | int restore_node_summary(struct f2fs_sb_info *sbi, |
| 2698 | unsigned int segno, struct f2fs_summary_block *sum); |
| 2699 | void flush_nat_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc); |
| 2700 | int build_node_manager(struct f2fs_sb_info *sbi); |
| 2701 | void destroy_node_manager(struct f2fs_sb_info *sbi); |
| 2702 | int __init create_node_manager_caches(void); |
| 2703 | void destroy_node_manager_caches(void); |
| 2704 | |
| 2705 | /* |
| 2706 | * segment.c |
| 2707 | */ |
| 2708 | bool need_SSR(struct f2fs_sb_info *sbi); |
| 2709 | void register_inmem_page(struct inode *inode, struct page *page); |
| 2710 | void drop_inmem_pages_all(struct f2fs_sb_info *sbi); |
| 2711 | void drop_inmem_pages(struct inode *inode); |
| 2712 | void drop_inmem_page(struct inode *inode, struct page *page); |
| 2713 | int commit_inmem_pages(struct inode *inode); |
| 2714 | void f2fs_balance_fs(struct f2fs_sb_info *sbi, bool need); |
| 2715 | void f2fs_balance_fs_bg(struct f2fs_sb_info *sbi); |
| 2716 | int f2fs_issue_flush(struct f2fs_sb_info *sbi, nid_t ino); |
| 2717 | int create_flush_cmd_control(struct f2fs_sb_info *sbi); |
| 2718 | int f2fs_flush_device_cache(struct f2fs_sb_info *sbi); |
| 2719 | void destroy_flush_cmd_control(struct f2fs_sb_info *sbi, bool free); |
| 2720 | void invalidate_blocks(struct f2fs_sb_info *sbi, block_t addr); |
| 2721 | bool is_checkpointed_data(struct f2fs_sb_info *sbi, block_t blkaddr); |
| 2722 | void init_discard_policy(struct discard_policy *dpolicy, int discard_type, |
| 2723 | unsigned int granularity); |
| 2724 | void stop_discard_thread(struct f2fs_sb_info *sbi); |
| 2725 | bool f2fs_wait_discard_bios(struct f2fs_sb_info *sbi); |
| 2726 | void clear_prefree_segments(struct f2fs_sb_info *sbi, struct cp_control *cpc); |
| 2727 | void release_discard_addrs(struct f2fs_sb_info *sbi); |
| 2728 | int npages_for_summary_flush(struct f2fs_sb_info *sbi, bool for_ra); |
| 2729 | void allocate_new_segments(struct f2fs_sb_info *sbi); |
| 2730 | int f2fs_trim_fs(struct f2fs_sb_info *sbi, struct fstrim_range *range); |
| 2731 | bool exist_trim_candidates(struct f2fs_sb_info *sbi, struct cp_control *cpc); |
| 2732 | struct page *get_sum_page(struct f2fs_sb_info *sbi, unsigned int segno); |
| 2733 | void update_meta_page(struct f2fs_sb_info *sbi, void *src, block_t blk_addr); |
| 2734 | void write_meta_page(struct f2fs_sb_info *sbi, struct page *page, |
| 2735 | enum iostat_type io_type); |
| 2736 | void write_node_page(unsigned int nid, struct f2fs_io_info *fio); |
| 2737 | void write_data_page(struct dnode_of_data *dn, struct f2fs_io_info *fio); |
| 2738 | int rewrite_data_page(struct f2fs_io_info *fio); |
| 2739 | void __f2fs_replace_block(struct f2fs_sb_info *sbi, struct f2fs_summary *sum, |
| 2740 | block_t old_blkaddr, block_t new_blkaddr, |
| 2741 | bool recover_curseg, bool recover_newaddr); |
| 2742 | void f2fs_replace_block(struct f2fs_sb_info *sbi, struct dnode_of_data *dn, |
| 2743 | block_t old_addr, block_t new_addr, |
| 2744 | unsigned char version, bool recover_curseg, |
| 2745 | bool recover_newaddr); |
| 2746 | void allocate_data_block(struct f2fs_sb_info *sbi, struct page *page, |
| 2747 | block_t old_blkaddr, block_t *new_blkaddr, |
| 2748 | struct f2fs_summary *sum, int type, |
| 2749 | struct f2fs_io_info *fio, bool add_list); |
| 2750 | void f2fs_wait_on_page_writeback(struct page *page, |
| 2751 | enum page_type type, bool ordered); |
| 2752 | void f2fs_wait_on_block_writeback(struct f2fs_sb_info *sbi, block_t blkaddr); |
| 2753 | void write_data_summaries(struct f2fs_sb_info *sbi, block_t start_blk); |
| 2754 | void write_node_summaries(struct f2fs_sb_info *sbi, block_t start_blk); |
| 2755 | int lookup_journal_in_cursum(struct f2fs_journal *journal, int type, |
| 2756 | unsigned int val, int alloc); |
| 2757 | void flush_sit_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc); |
| 2758 | int build_segment_manager(struct f2fs_sb_info *sbi); |
| 2759 | void destroy_segment_manager(struct f2fs_sb_info *sbi); |
| 2760 | int __init create_segment_manager_caches(void); |
| 2761 | void destroy_segment_manager_caches(void); |
| 2762 | |
| 2763 | /* |
| 2764 | * checkpoint.c |
| 2765 | */ |
| 2766 | void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi, bool end_io); |
| 2767 | struct page *grab_meta_page(struct f2fs_sb_info *sbi, pgoff_t index); |
| 2768 | struct page *get_meta_page(struct f2fs_sb_info *sbi, pgoff_t index); |
| 2769 | struct page *get_tmp_page(struct f2fs_sb_info *sbi, pgoff_t index); |
| 2770 | bool is_valid_blkaddr(struct f2fs_sb_info *sbi, block_t blkaddr, int type); |
| 2771 | int ra_meta_pages(struct f2fs_sb_info *sbi, block_t start, int nrpages, |
| 2772 | int type, bool sync); |
| 2773 | void ra_meta_pages_cond(struct f2fs_sb_info *sbi, pgoff_t index); |
| 2774 | long sync_meta_pages(struct f2fs_sb_info *sbi, enum page_type type, |
| 2775 | long nr_to_write, enum iostat_type io_type); |
| 2776 | void add_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type); |
| 2777 | void remove_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type); |
| 2778 | void release_ino_entry(struct f2fs_sb_info *sbi, bool all); |
| 2779 | bool exist_written_data(struct f2fs_sb_info *sbi, nid_t ino, int mode); |
| 2780 | void set_dirty_device(struct f2fs_sb_info *sbi, nid_t ino, |
| 2781 | unsigned int devidx, int type); |
| 2782 | bool is_dirty_device(struct f2fs_sb_info *sbi, nid_t ino, |
| 2783 | unsigned int devidx, int type); |
| 2784 | int f2fs_sync_inode_meta(struct f2fs_sb_info *sbi); |
| 2785 | int acquire_orphan_inode(struct f2fs_sb_info *sbi); |
| 2786 | void release_orphan_inode(struct f2fs_sb_info *sbi); |
| 2787 | void add_orphan_inode(struct inode *inode); |
| 2788 | void remove_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino); |
| 2789 | int recover_orphan_inodes(struct f2fs_sb_info *sbi); |
| 2790 | int get_valid_checkpoint(struct f2fs_sb_info *sbi); |
| 2791 | void update_dirty_page(struct inode *inode, struct page *page); |
| 2792 | void remove_dirty_inode(struct inode *inode); |
| 2793 | int sync_dirty_inodes(struct f2fs_sb_info *sbi, enum inode_type type); |
| 2794 | int write_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc); |
| 2795 | void init_ino_entry_info(struct f2fs_sb_info *sbi); |
| 2796 | int __init create_checkpoint_caches(void); |
| 2797 | void destroy_checkpoint_caches(void); |
| 2798 | |
| 2799 | /* |
| 2800 | * data.c |
| 2801 | */ |
| 2802 | void f2fs_submit_merged_write(struct f2fs_sb_info *sbi, enum page_type type); |
| 2803 | void f2fs_submit_merged_write_cond(struct f2fs_sb_info *sbi, |
| 2804 | struct inode *inode, nid_t ino, pgoff_t idx, |
| 2805 | enum page_type type); |
| 2806 | void f2fs_flush_merged_writes(struct f2fs_sb_info *sbi); |
| 2807 | int f2fs_submit_page_bio(struct f2fs_io_info *fio); |
| 2808 | int f2fs_submit_page_write(struct f2fs_io_info *fio); |
| 2809 | struct block_device *f2fs_target_device(struct f2fs_sb_info *sbi, |
| 2810 | block_t blk_addr, struct bio *bio); |
| 2811 | int f2fs_target_device_index(struct f2fs_sb_info *sbi, block_t blkaddr); |
| 2812 | void set_data_blkaddr(struct dnode_of_data *dn); |
| 2813 | void f2fs_update_data_blkaddr(struct dnode_of_data *dn, block_t blkaddr); |
| 2814 | int reserve_new_blocks(struct dnode_of_data *dn, blkcnt_t count); |
| 2815 | int reserve_new_block(struct dnode_of_data *dn); |
| 2816 | int f2fs_get_block(struct dnode_of_data *dn, pgoff_t index); |
| 2817 | int f2fs_preallocate_blocks(struct kiocb *iocb, struct iov_iter *from); |
| 2818 | int f2fs_reserve_block(struct dnode_of_data *dn, pgoff_t index); |
| 2819 | struct page *get_read_data_page(struct inode *inode, pgoff_t index, |
| 2820 | int op_flags, bool for_write); |
| 2821 | struct page *find_data_page(struct inode *inode, pgoff_t index); |
| 2822 | struct page *get_lock_data_page(struct inode *inode, pgoff_t index, |
| 2823 | bool for_write); |
| 2824 | struct page *get_new_data_page(struct inode *inode, |
| 2825 | struct page *ipage, pgoff_t index, bool new_i_size); |
| 2826 | int do_write_data_page(struct f2fs_io_info *fio); |
| 2827 | int f2fs_map_blocks(struct inode *inode, struct f2fs_map_blocks *map, |
| 2828 | int create, int flag); |
| 2829 | int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo, |
| 2830 | u64 start, u64 len); |
| 2831 | void f2fs_set_page_dirty_nobuffers(struct page *page); |
| 2832 | int __f2fs_write_data_pages(struct address_space *mapping, |
| 2833 | struct writeback_control *wbc, |
| 2834 | enum iostat_type io_type); |
| 2835 | void f2fs_invalidate_page(struct page *page, unsigned int offset, |
| 2836 | unsigned int length); |
| 2837 | int f2fs_release_page(struct page *page, gfp_t wait); |
| 2838 | #ifdef CONFIG_MIGRATION |
| 2839 | int f2fs_migrate_page(struct address_space *mapping, struct page *newpage, |
| 2840 | struct page *page, enum migrate_mode mode); |
| 2841 | #endif |
| 2842 | |
| 2843 | /* |
| 2844 | * gc.c |
| 2845 | */ |
| 2846 | int start_gc_thread(struct f2fs_sb_info *sbi); |
| 2847 | void stop_gc_thread(struct f2fs_sb_info *sbi); |
| 2848 | block_t start_bidx_of_node(unsigned int node_ofs, struct inode *inode); |
| 2849 | int f2fs_gc(struct f2fs_sb_info *sbi, bool sync, bool background, |
| 2850 | unsigned int segno); |
| 2851 | void build_gc_manager(struct f2fs_sb_info *sbi); |
| 2852 | |
| 2853 | /* |
| 2854 | * recovery.c |
| 2855 | */ |
| 2856 | int recover_fsync_data(struct f2fs_sb_info *sbi, bool check_only); |
| 2857 | bool space_for_roll_forward(struct f2fs_sb_info *sbi); |
| 2858 | |
| 2859 | /* |
| 2860 | * debug.c |
| 2861 | */ |
| 2862 | #ifdef CONFIG_F2FS_STAT_FS |
| 2863 | struct f2fs_stat_info { |
| 2864 | struct list_head stat_list; |
| 2865 | struct f2fs_sb_info *sbi; |
| 2866 | int all_area_segs, sit_area_segs, nat_area_segs, ssa_area_segs; |
| 2867 | int main_area_segs, main_area_sections, main_area_zones; |
| 2868 | unsigned long long hit_largest, hit_cached, hit_rbtree; |
| 2869 | unsigned long long hit_total, total_ext; |
| 2870 | int ext_tree, zombie_tree, ext_node; |
| 2871 | int ndirty_node, ndirty_dent, ndirty_meta, ndirty_imeta; |
| 2872 | int ndirty_data, ndirty_qdata; |
| 2873 | int inmem_pages; |
| 2874 | unsigned int ndirty_dirs, ndirty_files, nquota_files, ndirty_all; |
| 2875 | int nats, dirty_nats, sits, dirty_sits; |
| 2876 | int free_nids, avail_nids, alloc_nids; |
| 2877 | int total_count, utilization; |
| 2878 | int bg_gc, nr_wb_cp_data, nr_wb_data; |
| 2879 | int nr_flushing, nr_flushed, flush_list_empty; |
| 2880 | int nr_discarding, nr_discarded; |
| 2881 | int nr_discard_cmd; |
| 2882 | unsigned int undiscard_blks; |
| 2883 | int inline_xattr, inline_inode, inline_dir, append, update, orphans; |
| 2884 | int aw_cnt, max_aw_cnt, vw_cnt, max_vw_cnt; |
| 2885 | unsigned int valid_count, valid_node_count, valid_inode_count, discard_blks; |
| 2886 | unsigned int bimodal, avg_vblocks; |
| 2887 | int util_free, util_valid, util_invalid; |
| 2888 | int rsvd_segs, overp_segs; |
| 2889 | int dirty_count, node_pages, meta_pages; |
| 2890 | int prefree_count, call_count, cp_count, bg_cp_count; |
| 2891 | int tot_segs, node_segs, data_segs, free_segs, free_secs; |
| 2892 | int bg_node_segs, bg_data_segs; |
| 2893 | int tot_blks, data_blks, node_blks; |
| 2894 | int bg_data_blks, bg_node_blks; |
| 2895 | int curseg[NR_CURSEG_TYPE]; |
| 2896 | int cursec[NR_CURSEG_TYPE]; |
| 2897 | int curzone[NR_CURSEG_TYPE]; |
| 2898 | |
| 2899 | unsigned int segment_count[2]; |
| 2900 | unsigned int block_count[2]; |
| 2901 | unsigned int inplace_count; |
| 2902 | unsigned long long base_mem, cache_mem, page_mem; |
| 2903 | }; |
| 2904 | |
| 2905 | static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi) |
| 2906 | { |
| 2907 | return (struct f2fs_stat_info *)sbi->stat_info; |
| 2908 | } |
| 2909 | |
| 2910 | #define stat_inc_cp_count(si) ((si)->cp_count++) |
| 2911 | #define stat_inc_bg_cp_count(si) ((si)->bg_cp_count++) |
| 2912 | #define stat_inc_call_count(si) ((si)->call_count++) |
| 2913 | #define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++) |
| 2914 | #define stat_inc_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]++) |
| 2915 | #define stat_dec_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]--) |
| 2916 | #define stat_inc_total_hit(sbi) (atomic64_inc(&(sbi)->total_hit_ext)) |
| 2917 | #define stat_inc_rbtree_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_rbtree)) |
| 2918 | #define stat_inc_largest_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_largest)) |
| 2919 | #define stat_inc_cached_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_cached)) |
| 2920 | #define stat_inc_inline_xattr(inode) \ |
| 2921 | do { \ |
| 2922 | if (f2fs_has_inline_xattr(inode)) \ |
| 2923 | (atomic_inc(&F2FS_I_SB(inode)->inline_xattr)); \ |
| 2924 | } while (0) |
| 2925 | #define stat_dec_inline_xattr(inode) \ |
| 2926 | do { \ |
| 2927 | if (f2fs_has_inline_xattr(inode)) \ |
| 2928 | (atomic_dec(&F2FS_I_SB(inode)->inline_xattr)); \ |
| 2929 | } while (0) |
| 2930 | #define stat_inc_inline_inode(inode) \ |
| 2931 | do { \ |
| 2932 | if (f2fs_has_inline_data(inode)) \ |
| 2933 | (atomic_inc(&F2FS_I_SB(inode)->inline_inode)); \ |
| 2934 | } while (0) |
| 2935 | #define stat_dec_inline_inode(inode) \ |
| 2936 | do { \ |
| 2937 | if (f2fs_has_inline_data(inode)) \ |
| 2938 | (atomic_dec(&F2FS_I_SB(inode)->inline_inode)); \ |
| 2939 | } while (0) |
| 2940 | #define stat_inc_inline_dir(inode) \ |
| 2941 | do { \ |
| 2942 | if (f2fs_has_inline_dentry(inode)) \ |
| 2943 | (atomic_inc(&F2FS_I_SB(inode)->inline_dir)); \ |
| 2944 | } while (0) |
| 2945 | #define stat_dec_inline_dir(inode) \ |
| 2946 | do { \ |
| 2947 | if (f2fs_has_inline_dentry(inode)) \ |
| 2948 | (atomic_dec(&F2FS_I_SB(inode)->inline_dir)); \ |
| 2949 | } while (0) |
| 2950 | #define stat_inc_seg_type(sbi, curseg) \ |
| 2951 | ((sbi)->segment_count[(curseg)->alloc_type]++) |
| 2952 | #define stat_inc_block_count(sbi, curseg) \ |
| 2953 | ((sbi)->block_count[(curseg)->alloc_type]++) |
| 2954 | #define stat_inc_inplace_blocks(sbi) \ |
| 2955 | (atomic_inc(&(sbi)->inplace_count)) |
| 2956 | #define stat_inc_atomic_write(inode) \ |
| 2957 | (atomic_inc(&F2FS_I_SB(inode)->aw_cnt)) |
| 2958 | #define stat_dec_atomic_write(inode) \ |
| 2959 | (atomic_dec(&F2FS_I_SB(inode)->aw_cnt)) |
| 2960 | #define stat_update_max_atomic_write(inode) \ |
| 2961 | do { \ |
| 2962 | int cur = atomic_read(&F2FS_I_SB(inode)->aw_cnt); \ |
| 2963 | int max = atomic_read(&F2FS_I_SB(inode)->max_aw_cnt); \ |
| 2964 | if (cur > max) \ |
| 2965 | atomic_set(&F2FS_I_SB(inode)->max_aw_cnt, cur); \ |
| 2966 | } while (0) |
| 2967 | #define stat_inc_volatile_write(inode) \ |
| 2968 | (atomic_inc(&F2FS_I_SB(inode)->vw_cnt)) |
| 2969 | #define stat_dec_volatile_write(inode) \ |
| 2970 | (atomic_dec(&F2FS_I_SB(inode)->vw_cnt)) |
| 2971 | #define stat_update_max_volatile_write(inode) \ |
| 2972 | do { \ |
| 2973 | int cur = atomic_read(&F2FS_I_SB(inode)->vw_cnt); \ |
| 2974 | int max = atomic_read(&F2FS_I_SB(inode)->max_vw_cnt); \ |
| 2975 | if (cur > max) \ |
| 2976 | atomic_set(&F2FS_I_SB(inode)->max_vw_cnt, cur); \ |
| 2977 | } while (0) |
| 2978 | #define stat_inc_seg_count(sbi, type, gc_type) \ |
| 2979 | do { \ |
| 2980 | struct f2fs_stat_info *si = F2FS_STAT(sbi); \ |
| 2981 | si->tot_segs++; \ |
| 2982 | if ((type) == SUM_TYPE_DATA) { \ |
| 2983 | si->data_segs++; \ |
| 2984 | si->bg_data_segs += (gc_type == BG_GC) ? 1 : 0; \ |
| 2985 | } else { \ |
| 2986 | si->node_segs++; \ |
| 2987 | si->bg_node_segs += (gc_type == BG_GC) ? 1 : 0; \ |
| 2988 | } \ |
| 2989 | } while (0) |
| 2990 | |
| 2991 | #define stat_inc_tot_blk_count(si, blks) \ |
| 2992 | ((si)->tot_blks += (blks)) |
| 2993 | |
| 2994 | #define stat_inc_data_blk_count(sbi, blks, gc_type) \ |
| 2995 | do { \ |
| 2996 | struct f2fs_stat_info *si = F2FS_STAT(sbi); \ |
| 2997 | stat_inc_tot_blk_count(si, blks); \ |
| 2998 | si->data_blks += (blks); \ |
| 2999 | si->bg_data_blks += ((gc_type) == BG_GC) ? (blks) : 0; \ |
| 3000 | } while (0) |
| 3001 | |
| 3002 | #define stat_inc_node_blk_count(sbi, blks, gc_type) \ |
| 3003 | do { \ |
| 3004 | struct f2fs_stat_info *si = F2FS_STAT(sbi); \ |
| 3005 | stat_inc_tot_blk_count(si, blks); \ |
| 3006 | si->node_blks += (blks); \ |
| 3007 | si->bg_node_blks += ((gc_type) == BG_GC) ? (blks) : 0; \ |
| 3008 | } while (0) |
| 3009 | |
| 3010 | int f2fs_build_stats(struct f2fs_sb_info *sbi); |
| 3011 | void f2fs_destroy_stats(struct f2fs_sb_info *sbi); |
| 3012 | int __init f2fs_create_root_stats(void); |
| 3013 | void f2fs_destroy_root_stats(void); |
| 3014 | #else |
| 3015 | #define stat_inc_cp_count(si) do { } while (0) |
| 3016 | #define stat_inc_bg_cp_count(si) do { } while (0) |
| 3017 | #define stat_inc_call_count(si) do { } while (0) |
| 3018 | #define stat_inc_bggc_count(si) do { } while (0) |
| 3019 | #define stat_inc_dirty_inode(sbi, type) do { } while (0) |
| 3020 | #define stat_dec_dirty_inode(sbi, type) do { } while (0) |
| 3021 | #define stat_inc_total_hit(sb) do { } while (0) |
| 3022 | #define stat_inc_rbtree_node_hit(sb) do { } while (0) |
| 3023 | #define stat_inc_largest_node_hit(sbi) do { } while (0) |
| 3024 | #define stat_inc_cached_node_hit(sbi) do { } while (0) |
| 3025 | #define stat_inc_inline_xattr(inode) do { } while (0) |
| 3026 | #define stat_dec_inline_xattr(inode) do { } while (0) |
| 3027 | #define stat_inc_inline_inode(inode) do { } while (0) |
| 3028 | #define stat_dec_inline_inode(inode) do { } while (0) |
| 3029 | #define stat_inc_inline_dir(inode) do { } while (0) |
| 3030 | #define stat_dec_inline_dir(inode) do { } while (0) |
| 3031 | #define stat_inc_atomic_write(inode) do { } while (0) |
| 3032 | #define stat_dec_atomic_write(inode) do { } while (0) |
| 3033 | #define stat_update_max_atomic_write(inode) do { } while (0) |
| 3034 | #define stat_inc_volatile_write(inode) do { } while (0) |
| 3035 | #define stat_dec_volatile_write(inode) do { } while (0) |
| 3036 | #define stat_update_max_volatile_write(inode) do { } while (0) |
| 3037 | #define stat_inc_seg_type(sbi, curseg) do { } while (0) |
| 3038 | #define stat_inc_block_count(sbi, curseg) do { } while (0) |
| 3039 | #define stat_inc_inplace_blocks(sbi) do { } while (0) |
| 3040 | #define stat_inc_seg_count(sbi, type, gc_type) do { } while (0) |
| 3041 | #define stat_inc_tot_blk_count(si, blks) do { } while (0) |
| 3042 | #define stat_inc_data_blk_count(sbi, blks, gc_type) do { } while (0) |
| 3043 | #define stat_inc_node_blk_count(sbi, blks, gc_type) do { } while (0) |
| 3044 | |
| 3045 | static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; } |
| 3046 | static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { } |
| 3047 | static inline int __init f2fs_create_root_stats(void) { return 0; } |
| 3048 | static inline void f2fs_destroy_root_stats(void) { } |
| 3049 | #endif |
| 3050 | |
| 3051 | extern const struct file_operations f2fs_dir_operations; |
| 3052 | extern const struct file_operations f2fs_file_operations; |
| 3053 | extern const struct inode_operations f2fs_file_inode_operations; |
| 3054 | extern const struct address_space_operations f2fs_dblock_aops; |
| 3055 | extern const struct address_space_operations f2fs_node_aops; |
| 3056 | extern const struct address_space_operations f2fs_meta_aops; |
| 3057 | extern const struct inode_operations f2fs_dir_inode_operations; |
| 3058 | extern const struct inode_operations f2fs_symlink_inode_operations; |
| 3059 | extern const struct inode_operations f2fs_encrypted_symlink_inode_operations; |
| 3060 | extern const struct inode_operations f2fs_special_inode_operations; |
| 3061 | extern struct kmem_cache *inode_entry_slab; |
| 3062 | |
| 3063 | /* |
| 3064 | * inline.c |
| 3065 | */ |
| 3066 | bool f2fs_may_inline_data(struct inode *inode); |
| 3067 | bool f2fs_may_inline_dentry(struct inode *inode); |
| 3068 | void read_inline_data(struct page *page, struct page *ipage); |
| 3069 | void truncate_inline_inode(struct inode *inode, struct page *ipage, u64 from); |
| 3070 | int f2fs_read_inline_data(struct inode *inode, struct page *page); |
| 3071 | int f2fs_convert_inline_page(struct dnode_of_data *dn, struct page *page); |
| 3072 | int f2fs_convert_inline_inode(struct inode *inode); |
| 3073 | int f2fs_write_inline_data(struct inode *inode, struct page *page); |
| 3074 | bool recover_inline_data(struct inode *inode, struct page *npage); |
| 3075 | struct f2fs_dir_entry *find_in_inline_dir(struct inode *dir, |
| 3076 | struct fscrypt_name *fname, struct page **res_page); |
| 3077 | int make_empty_inline_dir(struct inode *inode, struct inode *parent, |
| 3078 | struct page *ipage); |
| 3079 | int f2fs_add_inline_entry(struct inode *dir, const struct qstr *new_name, |
| 3080 | const struct qstr *orig_name, |
| 3081 | struct inode *inode, nid_t ino, umode_t mode); |
| 3082 | void f2fs_delete_inline_entry(struct f2fs_dir_entry *dentry, struct page *page, |
| 3083 | struct inode *dir, struct inode *inode); |
| 3084 | bool f2fs_empty_inline_dir(struct inode *dir); |
| 3085 | int f2fs_read_inline_dir(struct file *file, struct dir_context *ctx, |
| 3086 | struct fscrypt_str *fstr); |
| 3087 | int f2fs_inline_data_fiemap(struct inode *inode, |
| 3088 | struct fiemap_extent_info *fieinfo, |
| 3089 | __u64 start, __u64 len); |
| 3090 | |
| 3091 | /* |
| 3092 | * shrinker.c |
| 3093 | */ |
| 3094 | unsigned long f2fs_shrink_count(struct shrinker *shrink, |
| 3095 | struct shrink_control *sc); |
| 3096 | unsigned long f2fs_shrink_scan(struct shrinker *shrink, |
| 3097 | struct shrink_control *sc); |
| 3098 | void f2fs_join_shrinker(struct f2fs_sb_info *sbi); |
| 3099 | void f2fs_leave_shrinker(struct f2fs_sb_info *sbi); |
| 3100 | |
| 3101 | /* |
| 3102 | * extent_cache.c |
| 3103 | */ |
| 3104 | struct rb_entry *__lookup_rb_tree(struct rb_root *root, |
| 3105 | struct rb_entry *cached_re, unsigned int ofs); |
| 3106 | struct rb_node **__lookup_rb_tree_for_insert(struct f2fs_sb_info *sbi, |
| 3107 | struct rb_root *root, struct rb_node **parent, |
| 3108 | unsigned int ofs); |
| 3109 | struct rb_entry *__lookup_rb_tree_ret(struct rb_root *root, |
| 3110 | struct rb_entry *cached_re, unsigned int ofs, |
| 3111 | struct rb_entry **prev_entry, struct rb_entry **next_entry, |
| 3112 | struct rb_node ***insert_p, struct rb_node **insert_parent, |
| 3113 | bool force); |
| 3114 | bool __check_rb_tree_consistence(struct f2fs_sb_info *sbi, |
| 3115 | struct rb_root *root); |
| 3116 | unsigned int f2fs_shrink_extent_tree(struct f2fs_sb_info *sbi, int nr_shrink); |
| 3117 | bool f2fs_init_extent_tree(struct inode *inode, struct f2fs_extent *i_ext); |
| 3118 | void f2fs_drop_extent_tree(struct inode *inode); |
| 3119 | unsigned int f2fs_destroy_extent_node(struct inode *inode); |
| 3120 | void f2fs_destroy_extent_tree(struct inode *inode); |
| 3121 | bool f2fs_lookup_extent_cache(struct inode *inode, pgoff_t pgofs, |
| 3122 | struct extent_info *ei); |
| 3123 | void f2fs_update_extent_cache(struct dnode_of_data *dn); |
| 3124 | void f2fs_update_extent_cache_range(struct dnode_of_data *dn, |
| 3125 | pgoff_t fofs, block_t blkaddr, unsigned int len); |
| 3126 | void init_extent_cache_info(struct f2fs_sb_info *sbi); |
| 3127 | int __init create_extent_cache(void); |
| 3128 | void destroy_extent_cache(void); |
| 3129 | |
| 3130 | /* |
| 3131 | * sysfs.c |
| 3132 | */ |
| 3133 | int __init f2fs_init_sysfs(void); |
| 3134 | void f2fs_exit_sysfs(void); |
| 3135 | int f2fs_register_sysfs(struct f2fs_sb_info *sbi); |
| 3136 | void f2fs_unregister_sysfs(struct f2fs_sb_info *sbi); |
| 3137 | |
| 3138 | /* |
| 3139 | * crypto support |
| 3140 | */ |
| 3141 | static inline bool f2fs_encrypted_inode(struct inode *inode) |
| 3142 | { |
| 3143 | return file_is_encrypt(inode); |
| 3144 | } |
| 3145 | |
| 3146 | static inline bool f2fs_encrypted_file(struct inode *inode) |
| 3147 | { |
| 3148 | return f2fs_encrypted_inode(inode) && S_ISREG(inode->i_mode); |
| 3149 | } |
| 3150 | |
| 3151 | static inline void f2fs_set_encrypted_inode(struct inode *inode) |
| 3152 | { |
| 3153 | #ifdef CONFIG_F2FS_FS_ENCRYPTION |
| 3154 | file_set_encrypt(inode); |
| 3155 | #endif |
| 3156 | } |
| 3157 | |
| 3158 | static inline bool f2fs_bio_encrypted(struct bio *bio) |
| 3159 | { |
| 3160 | return bio->bi_private != NULL; |
| 3161 | } |
| 3162 | |
| 3163 | static inline int f2fs_sb_has_crypto(struct super_block *sb) |
| 3164 | { |
| 3165 | return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_ENCRYPT); |
| 3166 | } |
| 3167 | |
| 3168 | static inline int f2fs_sb_mounted_blkzoned(struct super_block *sb) |
| 3169 | { |
| 3170 | return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_BLKZONED); |
| 3171 | } |
| 3172 | |
| 3173 | static inline int f2fs_sb_has_extra_attr(struct super_block *sb) |
| 3174 | { |
| 3175 | return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_EXTRA_ATTR); |
| 3176 | } |
| 3177 | |
| 3178 | static inline int f2fs_sb_has_project_quota(struct super_block *sb) |
| 3179 | { |
| 3180 | return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_PRJQUOTA); |
| 3181 | } |
| 3182 | |
| 3183 | static inline int f2fs_sb_has_inode_chksum(struct super_block *sb) |
| 3184 | { |
| 3185 | return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_INODE_CHKSUM); |
| 3186 | } |
| 3187 | |
| 3188 | static inline int f2fs_sb_has_flexible_inline_xattr(struct super_block *sb) |
| 3189 | { |
| 3190 | return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_FLEXIBLE_INLINE_XATTR); |
| 3191 | } |
| 3192 | |
| 3193 | static inline int f2fs_sb_has_quota_ino(struct super_block *sb) |
| 3194 | { |
| 3195 | return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_QUOTA_INO); |
| 3196 | } |
| 3197 | |
| 3198 | #ifdef CONFIG_BLK_DEV_ZONED |
| 3199 | static inline int get_blkz_type(struct f2fs_sb_info *sbi, |
| 3200 | struct block_device *bdev, block_t blkaddr) |
| 3201 | { |
| 3202 | unsigned int zno = blkaddr >> sbi->log_blocks_per_blkz; |
| 3203 | int i; |
| 3204 | |
| 3205 | for (i = 0; i < sbi->s_ndevs; i++) |
| 3206 | if (FDEV(i).bdev == bdev) |
| 3207 | return FDEV(i).blkz_type[zno]; |
| 3208 | return -EINVAL; |
| 3209 | } |
| 3210 | #endif |
| 3211 | |
| 3212 | static inline bool f2fs_discard_en(struct f2fs_sb_info *sbi) |
| 3213 | { |
| 3214 | struct request_queue *q = bdev_get_queue(sbi->sb->s_bdev); |
| 3215 | |
| 3216 | return blk_queue_discard(q) || f2fs_sb_mounted_blkzoned(sbi->sb); |
| 3217 | } |
| 3218 | |
| 3219 | static inline void set_opt_mode(struct f2fs_sb_info *sbi, unsigned int mt) |
| 3220 | { |
| 3221 | clear_opt(sbi, ADAPTIVE); |
| 3222 | clear_opt(sbi, LFS); |
| 3223 | |
| 3224 | switch (mt) { |
| 3225 | case F2FS_MOUNT_ADAPTIVE: |
| 3226 | set_opt(sbi, ADAPTIVE); |
| 3227 | break; |
| 3228 | case F2FS_MOUNT_LFS: |
| 3229 | set_opt(sbi, LFS); |
| 3230 | break; |
| 3231 | } |
| 3232 | } |
| 3233 | |
| 3234 | static inline bool f2fs_may_encrypt(struct inode *inode) |
| 3235 | { |
| 3236 | #ifdef CONFIG_F2FS_FS_ENCRYPTION |
| 3237 | umode_t mode = inode->i_mode; |
| 3238 | |
| 3239 | return (S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode)); |
| 3240 | #else |
| 3241 | return 0; |
| 3242 | #endif |
| 3243 | } |
| 3244 | |
| 3245 | #endif |