[GitHub/exynos8895/android_kernel_samsung_universal8895.git] / fs / f2fs / inode.c

/*
 * fs/f2fs/inode.c
 *
 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
 *             http://www.samsung.com/
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */
#include <linux/fs.h>
#include <linux/f2fs_fs.h>
#include <linux/buffer_head.h>
#include <linux/backing-dev.h>
#include <linux/writeback.h>

#include "f2fs.h"
#include "node.h"
#include "segment.h"

#include <trace/events/f2fs.h>

void f2fs_mark_inode_dirty_sync(struct inode *inode, bool sync)
{
	if (f2fs_inode_dirtied(inode, sync))
		return;

	mark_inode_dirty_sync(inode);
}

void f2fs_set_inode_flags(struct inode *inode)
{
	unsigned int flags = F2FS_I(inode)->i_flags;
	unsigned int new_fl = 0;

	if (flags & FS_SYNC_FL)
		new_fl |= S_SYNC;
	if (flags & FS_APPEND_FL)
		new_fl |= S_APPEND;
	if (flags & FS_IMMUTABLE_FL)
		new_fl |= S_IMMUTABLE;
	if (flags & FS_NOATIME_FL)
		new_fl |= S_NOATIME;
	if (flags & FS_DIRSYNC_FL)
		new_fl |= S_DIRSYNC;
	inode_set_flags(inode, new_fl,
			S_SYNC|S_APPEND|S_IMMUTABLE|S_NOATIME|S_DIRSYNC);
}

static void __get_inode_rdev(struct inode *inode, struct f2fs_inode *ri)
{
	int extra_size = get_extra_isize(inode);

	if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) ||
			S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
		if (ri->i_addr[extra_size])
			inode->i_rdev = old_decode_dev(
				le32_to_cpu(ri->i_addr[extra_size]));
		else
			inode->i_rdev = new_decode_dev(
				le32_to_cpu(ri->i_addr[extra_size + 1]));
	}
}

static bool __written_first_block(struct f2fs_inode *ri)
{
	block_t addr = le32_to_cpu(ri->i_addr[offset_in_addr(ri)]);

	if (addr != NEW_ADDR && addr != NULL_ADDR)
		return true;
	return false;
}

static void __set_inode_rdev(struct inode *inode, struct f2fs_inode *ri)
{
	int extra_size = get_extra_isize(inode);

	if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) {
		if (old_valid_dev(inode->i_rdev)) {
			ri->i_addr[extra_size] =
				cpu_to_le32(old_encode_dev(inode->i_rdev));
			ri->i_addr[extra_size + 1] = 0;
		} else {
			ri->i_addr[extra_size] = 0;
			ri->i_addr[extra_size + 1] =
				cpu_to_le32(new_encode_dev(inode->i_rdev));
			ri->i_addr[extra_size + 2] = 0;
		}
	}
}

static void __recover_inline_status(struct inode *inode, struct page *ipage)
{
	void *inline_data = inline_data_addr(inode, ipage);
	__le32 *start = inline_data;
	__le32 *end = start + MAX_INLINE_DATA(inode) / sizeof(__le32);

	while (start < end) {
		if (*start++) {
			f2fs_wait_on_page_writeback(ipage, NODE, true);

			set_inode_flag(inode, FI_DATA_EXIST);
			set_raw_inline(inode, F2FS_INODE(ipage));
			set_page_dirty(ipage);
			return;
		}
	}
	return;
}

static bool f2fs_enable_inode_chksum(struct f2fs_sb_info *sbi, struct page *page)
{
	struct f2fs_inode *ri = &F2FS_NODE(page)->i;
	int extra_isize = le32_to_cpu(ri->i_extra_isize);

	if (!f2fs_sb_has_inode_chksum(sbi->sb))
		return false;

	if (!RAW_IS_INODE(F2FS_NODE(page)) || !(ri->i_inline & F2FS_EXTRA_ATTR))
		return false;

	if (!F2FS_FITS_IN_INODE(ri, extra_isize, i_inode_checksum))
		return false;

	return true;
}

static __u32 f2fs_inode_chksum(struct f2fs_sb_info *sbi, struct page *page)
{
	struct f2fs_node *node = F2FS_NODE(page);
	struct f2fs_inode *ri = &node->i;
	__le32 ino = node->footer.ino;
	__le32 gen = ri->i_generation;
	__u32 chksum, chksum_seed;
	__u32 dummy_cs = 0;
	unsigned int offset = offsetof(struct f2fs_inode, i_inode_checksum);
	unsigned int cs_size = sizeof(dummy_cs);

	chksum = f2fs_chksum(sbi, sbi->s_chksum_seed, (__u8 *)&ino,
							sizeof(ino));
	chksum_seed = f2fs_chksum(sbi, chksum, (__u8 *)&gen, sizeof(gen));

	chksum = f2fs_chksum(sbi, chksum_seed, (__u8 *)ri, offset);
	chksum = f2fs_chksum(sbi, chksum, (__u8 *)&dummy_cs, cs_size);
	offset += cs_size;
	chksum = f2fs_chksum(sbi, chksum, (__u8 *)ri + offset,
						F2FS_BLKSIZE - offset);
	return chksum;
}

bool f2fs_inode_chksum_verify(struct f2fs_sb_info *sbi, struct page *page)
{
	struct f2fs_inode *ri;
	__u32 provided, calculated;

	if (!f2fs_enable_inode_chksum(sbi, page) ||
			PageDirty(page) || PageWriteback(page))
		return true;

	ri = &F2FS_NODE(page)->i;
	provided = le32_to_cpu(ri->i_inode_checksum);
	calculated = f2fs_inode_chksum(sbi, page);

	if (provided != calculated)
		f2fs_msg(sbi->sb, KERN_WARNING,
			"checksum invalid, ino = %x, %x vs. %x",
			ino_of_node(page), provided, calculated);

	return provided == calculated;
}

void f2fs_inode_chksum_set(struct f2fs_sb_info *sbi, struct page *page)
{
	struct f2fs_inode *ri = &F2FS_NODE(page)->i;

	if (!f2fs_enable_inode_chksum(sbi, page))
		return;

	ri->i_inode_checksum = cpu_to_le32(f2fs_inode_chksum(sbi, page));
}

static int do_read_inode(struct inode *inode)
{
	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
	struct f2fs_inode_info *fi = F2FS_I(inode);
	struct page *node_page;
	struct f2fs_inode *ri;
	projid_t i_projid;

	/* Check if ino is within scope */
	if (check_nid_range(sbi, inode->i_ino)) {
		f2fs_msg(inode->i_sb, KERN_ERR, "bad inode number: %lu",
			 (unsigned long) inode->i_ino);
		WARN_ON(1);
		return -EINVAL;
	}

	node_page = get_node_page(sbi, inode->i_ino);
	if (IS_ERR(node_page))
		return PTR_ERR(node_page);

	ri = F2FS_INODE(node_page);

	inode->i_mode = le16_to_cpu(ri->i_mode);
	i_uid_write(inode, le32_to_cpu(ri->i_uid));
	i_gid_write(inode, le32_to_cpu(ri->i_gid));
	set_nlink(inode, le32_to_cpu(ri->i_links));
	inode->i_size = le64_to_cpu(ri->i_size);
	inode->i_blocks = SECTOR_FROM_BLOCK(le64_to_cpu(ri->i_blocks) - 1);

	inode->i_atime.tv_sec = le64_to_cpu(ri->i_atime);
	inode->i_ctime.tv_sec = le64_to_cpu(ri->i_ctime);
	inode->i_mtime.tv_sec = le64_to_cpu(ri->i_mtime);
	inode->i_atime.tv_nsec = le32_to_cpu(ri->i_atime_nsec);
	inode->i_ctime.tv_nsec = le32_to_cpu(ri->i_ctime_nsec);
	inode->i_mtime.tv_nsec = le32_to_cpu(ri->i_mtime_nsec);
	inode->i_generation = le32_to_cpu(ri->i_generation);

	fi->i_current_depth = le32_to_cpu(ri->i_current_depth);
	fi->i_xattr_nid = le32_to_cpu(ri->i_xattr_nid);
	fi->i_flags = le32_to_cpu(ri->i_flags);
	fi->flags = 0;
	fi->i_advise = ri->i_advise;
	fi->i_pino = le32_to_cpu(ri->i_pino);
	fi->i_dir_level = ri->i_dir_level;

	if (f2fs_init_extent_tree(inode, &ri->i_ext))
		set_page_dirty(node_page);

	get_inline_info(inode, ri);

	fi->i_extra_isize = f2fs_has_extra_attr(inode) ?
					le16_to_cpu(ri->i_extra_isize) : 0;

	if (f2fs_sb_has_flexible_inline_xattr(sbi->sb)) {
		f2fs_bug_on(sbi, !f2fs_has_extra_attr(inode));
		fi->i_inline_xattr_size = le16_to_cpu(ri->i_inline_xattr_size);
	} else if (f2fs_has_inline_xattr(inode) ||
				f2fs_has_inline_dentry(inode)) {
		fi->i_inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS;
	} else {

		/*
		 * Previous inline data or directory always reserved 200 bytes
		 * in inode layout, even if inline_xattr is disabled. In order
		 * to keep inline_dentry's structure for backward compatibility,
		 * we get the space back only from inline_data.
		 */
		fi->i_inline_xattr_size = 0;
	}

	/* check data exist */
	if (f2fs_has_inline_data(inode) && !f2fs_exist_data(inode))
		__recover_inline_status(inode, node_page);

	/* get rdev by using inline_info */
	__get_inode_rdev(inode, ri);

	if (__written_first_block(ri))
		set_inode_flag(inode, FI_FIRST_BLOCK_WRITTEN);

	if (!need_inode_block_update(sbi, inode->i_ino))
		fi->last_disk_size = inode->i_size;

	if (fi->i_flags & FS_PROJINHERIT_FL)
		set_inode_flag(inode, FI_PROJ_INHERIT);

	if (f2fs_has_extra_attr(inode) && f2fs_sb_has_project_quota(sbi->sb) &&
			F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_projid))
		i_projid = (projid_t)le32_to_cpu(ri->i_projid);
	else
		i_projid = F2FS_DEF_PROJID;
	fi->i_projid = make_kprojid(&init_user_ns, i_projid);

	f2fs_put_page(node_page, 1);

	stat_inc_inline_xattr(inode);
	stat_inc_inline_inode(inode);
	stat_inc_inline_dir(inode);

	return 0;
}

struct inode *f2fs_iget(struct super_block *sb, unsigned long ino)
{
	struct f2fs_sb_info *sbi = F2FS_SB(sb);
	struct inode *inode;
	int ret = 0;

	inode = iget_locked(sb, ino);
	if (!inode)
		return ERR_PTR(-ENOMEM);

	if (!(inode->i_state & I_NEW)) {
		trace_f2fs_iget(inode);
		return inode;
	}
	if (ino == F2FS_NODE_INO(sbi) || ino == F2FS_META_INO(sbi))
		goto make_now;

	ret = do_read_inode(inode);
	if (ret)
		goto bad_inode;
make_now:
	if (ino == F2FS_NODE_INO(sbi)) {
		inode->i_mapping->a_ops = &f2fs_node_aops;
		mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_ZERO);
	} else if (ino == F2FS_META_INO(sbi)) {
		inode->i_mapping->a_ops = &f2fs_meta_aops;
		mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_ZERO);
	} else if (S_ISREG(inode->i_mode)) {
		inode->i_op = &f2fs_file_inode_operations;
		inode->i_fop = &f2fs_file_operations;
		inode->i_mapping->a_ops = &f2fs_dblock_aops;
	} else if (S_ISDIR(inode->i_mode)) {
		inode->i_op = &f2fs_dir_inode_operations;
		inode->i_fop = &f2fs_dir_operations;
		inode->i_mapping->a_ops = &f2fs_dblock_aops;
		mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_HIGH_ZERO);
	} else if (S_ISLNK(inode->i_mode)) {
		if (f2fs_encrypted_inode(inode))
			inode->i_op = &f2fs_encrypted_symlink_inode_operations;
		else
			inode->i_op = &f2fs_symlink_inode_operations;
		inode_nohighmem(inode);
		inode->i_mapping->a_ops = &f2fs_dblock_aops;
	} else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) ||
			S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
		inode->i_op = &f2fs_special_inode_operations;
		init_special_inode(inode, inode->i_mode, inode->i_rdev);
	} else {
		ret = -EIO;
		goto bad_inode;
	}
	f2fs_set_inode_flags(inode);
	unlock_new_inode(inode);
	trace_f2fs_iget(inode);
	return inode;

bad_inode:
	iget_failed(inode);
	trace_f2fs_iget_exit(inode, ret);
	return ERR_PTR(ret);
}

struct inode *f2fs_iget_retry(struct super_block *sb, unsigned long ino)
{
	struct inode *inode;
retry:
	inode = f2fs_iget(sb, ino);
	if (IS_ERR(inode)) {
		if (PTR_ERR(inode) == -ENOMEM) {
			congestion_wait(BLK_RW_ASYNC, HZ/50);
			goto retry;
		}
	}
	return inode;
}

int update_inode(struct inode *inode, struct page *node_page)
{
	struct f2fs_inode *ri;
	struct extent_tree *et = F2FS_I(inode)->extent_tree;

	f2fs_inode_synced(inode);

	f2fs_wait_on_page_writeback(node_page, NODE, true);

	ri = F2FS_INODE(node_page);

	ri->i_mode = cpu_to_le16(inode->i_mode);
	ri->i_advise = F2FS_I(inode)->i_advise;
	ri->i_uid = cpu_to_le32(i_uid_read(inode));
	ri->i_gid = cpu_to_le32(i_gid_read(inode));
	ri->i_links = cpu_to_le32(inode->i_nlink);
	ri->i_size = cpu_to_le64(i_size_read(inode));
	ri->i_blocks = cpu_to_le64(SECTOR_TO_BLOCK(inode->i_blocks) + 1);

	if (et) {
		read_lock(&et->lock);
		set_raw_extent(&et->largest, &ri->i_ext);
		read_unlock(&et->lock);
	} else {
		memset(&ri->i_ext, 0, sizeof(ri->i_ext));
	}
	set_raw_inline(inode, ri);

	ri->i_atime = cpu_to_le64(inode->i_atime.tv_sec);
	ri->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec);
	ri->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec);
	ri->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec);
	ri->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec);
	ri->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec);
	ri->i_current_depth = cpu_to_le32(F2FS_I(inode)->i_current_depth);
	ri->i_xattr_nid = cpu_to_le32(F2FS_I(inode)->i_xattr_nid);
	ri->i_flags = cpu_to_le32(F2FS_I(inode)->i_flags);
	ri->i_pino = cpu_to_le32(F2FS_I(inode)->i_pino);
	ri->i_generation = cpu_to_le32(inode->i_generation);
	ri->i_dir_level = F2FS_I(inode)->i_dir_level;

	if (f2fs_has_extra_attr(inode)) {
		ri->i_extra_isize = cpu_to_le16(F2FS_I(inode)->i_extra_isize);

		if (f2fs_sb_has_flexible_inline_xattr(F2FS_I_SB(inode)->sb))
			ri->i_inline_xattr_size =
				cpu_to_le16(F2FS_I(inode)->i_inline_xattr_size);

		if (f2fs_sb_has_project_quota(F2FS_I_SB(inode)->sb) &&
			F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize,
								i_projid)) {
			projid_t i_projid;

			i_projid = from_kprojid(&init_user_ns,
						F2FS_I(inode)->i_projid);
			ri->i_projid = cpu_to_le32(i_projid);
		}
	}

	__set_inode_rdev(inode, ri);
	set_cold_node(inode, node_page);

	/* deleted inode */
	if (inode->i_nlink == 0)
		clear_inline_node(node_page);

	return set_page_dirty(node_page);
}

int update_inode_page(struct inode *inode)
{
	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
	struct page *node_page;
	int ret = 0;
retry:
	node_page = get_node_page(sbi, inode->i_ino);
	if (IS_ERR(node_page)) {
		int err = PTR_ERR(node_page);
		if (err == -ENOMEM) {
			cond_resched();
			goto retry;
		} else if (err != -ENOENT) {
			f2fs_stop_checkpoint(sbi, false);
		}
		return 0;
	}
	ret = update_inode(inode, node_page);
	f2fs_put_page(node_page, 1);
	return ret;
}

int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc)
{
	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);

	if (inode->i_ino == F2FS_NODE_INO(sbi) ||
			inode->i_ino == F2FS_META_INO(sbi))
		return 0;

	if (!is_inode_flag_set(inode, FI_DIRTY_INODE))
		return 0;

	/*
	 * We need to balance fs here to prevent from producing dirty node pages
	 * during the urgent cleaning time when runing out of free sections.
	 */
	update_inode_page(inode);
	if (wbc && wbc->nr_to_write)
		f2fs_balance_fs(sbi, true);
	return 0;
}

/*
 * Called at the last iput() if i_nlink is zero
 */
void f2fs_evict_inode(struct inode *inode)
{
	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
	nid_t xnid = F2FS_I(inode)->i_xattr_nid;
	int err = 0;

	/* some remained atomic pages should discarded */
	if (f2fs_is_atomic_file(inode))
		drop_inmem_pages(inode);

	trace_f2fs_evict_inode(inode);
	truncate_inode_pages_final(&inode->i_data);

	if (inode->i_ino == F2FS_NODE_INO(sbi) ||
			inode->i_ino == F2FS_META_INO(sbi))
		goto out_clear;

	f2fs_bug_on(sbi, get_dirty_pages(inode));
	remove_dirty_inode(inode);

	f2fs_destroy_extent_tree(inode);

	if (inode->i_nlink || is_bad_inode(inode))
		goto no_delete;

	dquot_initialize(inode);

	remove_ino_entry(sbi, inode->i_ino, APPEND_INO);
	remove_ino_entry(sbi, inode->i_ino, UPDATE_INO);
	remove_ino_entry(sbi, inode->i_ino, FLUSH_INO);

	sb_start_intwrite(inode->i_sb);
	set_inode_flag(inode, FI_NO_ALLOC);
	i_size_write(inode, 0);
retry:
	if (F2FS_HAS_BLOCKS(inode))
		err = f2fs_truncate(inode);

#ifdef CONFIG_F2FS_FAULT_INJECTION
	if (time_to_inject(sbi, FAULT_EVICT_INODE)) {
		f2fs_show_injection_info(FAULT_EVICT_INODE);
		err = -EIO;
	}
#endif
	if (!err) {
		f2fs_lock_op(sbi);
		err = remove_inode_page(inode);
		f2fs_unlock_op(sbi);
		if (err == -ENOENT)
			err = 0;
	}

	/* give more chances, if ENOMEM case */
	if (err == -ENOMEM) {
		err = 0;
		goto retry;
	}

	if (err)
		update_inode_page(inode);
	dquot_free_inode(inode);
	sb_end_intwrite(inode->i_sb);
no_delete:
	dquot_drop(inode);

	stat_dec_inline_xattr(inode);
	stat_dec_inline_dir(inode);
	stat_dec_inline_inode(inode);

	if (likely(!is_set_ckpt_flags(sbi, CP_ERROR_FLAG)))
		f2fs_bug_on(sbi, is_inode_flag_set(inode, FI_DIRTY_INODE));
	else
		f2fs_inode_synced(inode);

	/* ino == 0, if f2fs_new_inode() was failed t*/
	if (inode->i_ino)
		invalidate_mapping_pages(NODE_MAPPING(sbi), inode->i_ino,
							inode->i_ino);
	if (xnid)
		invalidate_mapping_pages(NODE_MAPPING(sbi), xnid, xnid);
	if (inode->i_nlink) {
		if (is_inode_flag_set(inode, FI_APPEND_WRITE))
			add_ino_entry(sbi, inode->i_ino, APPEND_INO);
		if (is_inode_flag_set(inode, FI_UPDATE_WRITE))
			add_ino_entry(sbi, inode->i_ino, UPDATE_INO);
	}
	if (is_inode_flag_set(inode, FI_FREE_NID)) {
		alloc_nid_failed(sbi, inode->i_ino);
		clear_inode_flag(inode, FI_FREE_NID);
	} else {
		f2fs_bug_on(sbi, err &&
			!exist_written_data(sbi, inode->i_ino, ORPHAN_INO));
	}
out_clear:
	fscrypt_put_encryption_info(inode, NULL);
	clear_inode(inode);
}

/* caller should call f2fs_lock_op() */
void handle_failed_inode(struct inode *inode)
{
	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
	struct node_info ni;

	/*
	 * clear nlink of inode in order to release resource of inode
	 * immediately.
	 */
	clear_nlink(inode);

	/*
	 * we must call this to avoid inode being remained as dirty, resulting
	 * in a panic when flushing dirty inodes in gdirty_list.
	 */
	update_inode_page(inode);
	f2fs_inode_synced(inode);

	/* don't make bad inode, since it becomes a regular file. */
	unlock_new_inode(inode);

	/*
	 * Note: we should add inode to orphan list before f2fs_unlock_op()
	 * so we can prevent losing this orphan when encoutering checkpoint
	 * and following suddenly power-off.
	 */
	get_node_info(sbi, inode->i_ino, &ni);

	if (ni.blk_addr != NULL_ADDR) {
		int err = acquire_orphan_inode(sbi);
		if (err) {
			set_sbi_flag(sbi, SBI_NEED_FSCK);
			f2fs_msg(sbi->sb, KERN_WARNING,
				"Too many orphan inodes, run fsck to fix.");
		} else {
			add_orphan_inode(inode);
		}
		alloc_nid_done(sbi, inode->i_ino);
	} else {
		set_inode_flag(inode, FI_FREE_NID);
	}

	f2fs_unlock_op(sbi);

	/* iput will drop the inode object */
	iput(inode);
}
Commit	Line	Data
0a8165d7	1	/*
19f99cee JK	2	* fs/f2fs/inode.c
	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	#include <linux/fs.h>
	12	#include <linux/f2fs_fs.h>
	13	#include <linux/buffer_head.h>
c1286ff4	14	#include <linux/backing-dev.h>
19f99cee JK	15	#include <linux/writeback.h>
	16
	17	#include "f2fs.h"
	18	#include "node.h"
13f00235	19	#include "segment.h"
19f99cee	20
a2a4a7e4 NJ	21	#include <trace/events/f2fs.h>
a2a4a7e4 NJ	22
0ef31c7b	23	void f2fs_mark_inode_dirty_sync(struct inode *inode, bool sync)
c1286ff4	24	{
0ef31c7b	25	if (f2fs_inode_dirtied(inode, sync))
c1286ff4	26	return;
0ef31c7b	27
c1286ff4 JK	28	mark_inode_dirty_sync(inode);
	29	}
	30
19f99cee JK	31	void f2fs_set_inode_flags(struct inode *inode)
	32	{
	33	unsigned int flags = F2FS_I(inode)->i_flags;
8abfb36a	34	unsigned int new_fl = 0;
19f99cee JK	35
19f99cee JK	36	if (flags & FS_SYNC_FL)
8abfb36a	37	new_fl \|= S_SYNC;
19f99cee	38	if (flags & FS_APPEND_FL)
8abfb36a	39	new_fl \|= S_APPEND;
19f99cee	40	if (flags & FS_IMMUTABLE_FL)
8abfb36a	41	new_fl \|= S_IMMUTABLE;
19f99cee	42	if (flags & FS_NOATIME_FL)
8abfb36a	43	new_fl \|= S_NOATIME;
19f99cee	44	if (flags & FS_DIRSYNC_FL)
8abfb36a	45	new_fl \|= S_DIRSYNC;
6a678857 ZZ	46	inode_set_flags(inode, new_fl,
6a678857 ZZ	47	S_SYNC\|S_APPEND\|S_IMMUTABLE\|S_NOATIME\|S_DIRSYNC);
19f99cee JK	48	}
19f99cee JK	49
3d1e3807 JK	50	static void __get_inode_rdev(struct inode inode, struct f2fs_inode ri)
3d1e3807 JK	51	{
13f00235 JK	52	int extra_size = get_extra_isize(inode);
13f00235 JK	53
3d1e3807 JK	54	if (S_ISCHR(inode->i_mode) \|\| S_ISBLK(inode->i_mode) \|\|
3d1e3807 JK	55	S_ISFIFO(inode->i_mode) \|\| S_ISSOCK(inode->i_mode)) {
13f00235 JK	56	if (ri->i_addr[extra_size])
	57	inode->i_rdev = old_decode_dev(
	58	le32_to_cpu(ri->i_addr[extra_size]));
3d1e3807	59	else
13f00235 JK	60	inode->i_rdev = new_decode_dev(
13f00235 JK	61	le32_to_cpu(ri->i_addr[extra_size + 1]));
3d1e3807 JK	62	}
	63	}
	64
3c6c2beb JK	65	static bool __written_first_block(struct f2fs_inode *ri)
3c6c2beb JK	66	{
13f00235	67	block_t addr = le32_to_cpu(ri->i_addr[offset_in_addr(ri)]);
adad81ed JK	68
adad81ed JK	69	if (addr != NEW_ADDR && addr != NULL_ADDR)
3c6c2beb JK	70	return true;
	71	return false;
	72	}
	73
3d1e3807 JK	74	static void __set_inode_rdev(struct inode inode, struct f2fs_inode ri)
3d1e3807 JK	75	{
13f00235 JK	76	int extra_size = get_extra_isize(inode);
13f00235 JK	77
3d1e3807 JK	78	if (S_ISCHR(inode->i_mode) \|\| S_ISBLK(inode->i_mode)) {
3d1e3807 JK	79	if (old_valid_dev(inode->i_rdev)) {
13f00235	80	ri->i_addr[extra_size] =
6c311ec6	81	cpu_to_le32(old_encode_dev(inode->i_rdev));
13f00235	82	ri->i_addr[extra_size + 1] = 0;
3d1e3807	83	} else {
13f00235 JK	84	ri->i_addr[extra_size] = 0;
13f00235 JK	85	ri->i_addr[extra_size + 1] =
6c311ec6	86	cpu_to_le32(new_encode_dev(inode->i_rdev));
13f00235	87	ri->i_addr[extra_size + 2] = 0;
3d1e3807 JK	88	}
	89	}
	90	}
	91
9e5ba77f	92	static void __recover_inline_status(struct inode inode, struct page ipage)
b3d208f9	93	{
13f00235	94	void *inline_data = inline_data_addr(inode, ipage);
9e5ba77f	95	__le32 *start = inline_data;
13f00235	96	__le32 *end = start + MAX_INLINE_DATA(inode) / sizeof(__le32);
b3d208f9	97
9e5ba77f CY	98	while (start < end) {
9e5ba77f CY	99	if (*start++) {
c1286ff4	100	f2fs_wait_on_page_writeback(ipage, NODE, true);
b3d208f9	101
c1286ff4 JK	102	set_inode_flag(inode, FI_DATA_EXIST);
c1286ff4 JK	103	set_raw_inline(inode, F2FS_INODE(ipage));
9e5ba77f CY	104	set_page_dirty(ipage);
	105	return;
	106	}
b3d208f9	107	}
9e5ba77f	108	return;
b3d208f9 JK	109	}
b3d208f9 JK	110
13f00235 JK	111	static bool f2fs_enable_inode_chksum(struct f2fs_sb_info sbi, struct page page)
	112	{
	113	struct f2fs_inode *ri = &F2FS_NODE(page)->i;
	114	int extra_isize = le32_to_cpu(ri->i_extra_isize);
	115
	116	if (!f2fs_sb_has_inode_chksum(sbi->sb))
	117	return false;
	118
	119	if (!RAW_IS_INODE(F2FS_NODE(page)) \|\| !(ri->i_inline & F2FS_EXTRA_ATTR))
	120	return false;
	121
	122	if (!F2FS_FITS_IN_INODE(ri, extra_isize, i_inode_checksum))
	123	return false;
	124
	125	return true;
	126	}
	127
	128	static __u32 f2fs_inode_chksum(struct f2fs_sb_info sbi, struct page page)
	129	{
	130	struct f2fs_node *node = F2FS_NODE(page);
	131	struct f2fs_inode *ri = &node->i;
	132	__le32 ino = node->footer.ino;
	133	__le32 gen = ri->i_generation;
	134	__u32 chksum, chksum_seed;
	135	__u32 dummy_cs = 0;
	136	unsigned int offset = offsetof(struct f2fs_inode, i_inode_checksum);
	137	unsigned int cs_size = sizeof(dummy_cs);
	138
	139	chksum = f2fs_chksum(sbi, sbi->s_chksum_seed, (__u8 *)&ino,
	140	sizeof(ino));
	141	chksum_seed = f2fs_chksum(sbi, chksum, (__u8 *)&gen, sizeof(gen));
	142
	143	chksum = f2fs_chksum(sbi, chksum_seed, (__u8 *)ri, offset);
	144	chksum = f2fs_chksum(sbi, chksum, (__u8 *)&dummy_cs, cs_size);
	145	offset += cs_size;
	146	chksum = f2fs_chksum(sbi, chksum, (__u8 *)ri + offset,
	147	F2FS_BLKSIZE - offset);
	148	return chksum;
	149	}
	150
	151	bool f2fs_inode_chksum_verify(struct f2fs_sb_info sbi, struct page page)
	152	{
	153	struct f2fs_inode *ri;
	154	__u32 provided, calculated;
	155
	156	if (!f2fs_enable_inode_chksum(sbi, page) \|\|
	157	PageDirty(page) \|\| PageWriteback(page))
	158	return true;
	159
	160	ri = &F2FS_NODE(page)->i;
	161	provided = le32_to_cpu(ri->i_inode_checksum);
	162	calculated = f2fs_inode_chksum(sbi, page);
	163
	164	if (provided != calculated)
	165	f2fs_msg(sbi->sb, KERN_WARNING,
	166	"checksum invalid, ino = %x, %x vs. %x",
	167	ino_of_node(page), provided, calculated);
	168
	169	return provided == calculated;
	170	}
	171
	172	void f2fs_inode_chksum_set(struct f2fs_sb_info sbi, struct page page)
	173	{
	174	struct f2fs_inode *ri = &F2FS_NODE(page)->i;
175
176	if (!f2fs_enable_inode_chksum(sbi, page))
177	return;
178
179	ri->i_inode_checksum = cpu_to_le32(f2fs_inode_chksum(sbi, page));
180	}
181
19f99cee JK	182	static int do_read_inode(struct inode *inode)
19f99cee JK	183	{
4081363f	184	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
19f99cee JK	185	struct f2fs_inode_info *fi = F2FS_I(inode);
19f99cee JK	186	struct page *node_page;
19f99cee	187	struct f2fs_inode *ri;
13f00235	188	projid_t i_projid;
19f99cee JK	189
19f99cee JK	190	/* Check if ino is within scope */
064e0823 NJ	191	if (check_nid_range(sbi, inode->i_ino)) {
	192	f2fs_msg(inode->i_sb, KERN_ERR, "bad inode number: %lu",
	193	(unsigned long) inode->i_ino);
d6b7d4b3	194	WARN_ON(1);
064e0823 NJ	195	return -EINVAL;
064e0823 NJ	196	}
19f99cee JK	197
	198	node_page = get_node_page(sbi, inode->i_ino);
	199	if (IS_ERR(node_page))
	200	return PTR_ERR(node_page);
	201
58bfaf44	202	ri = F2FS_INODE(node_page);
19f99cee JK	203
	204	inode->i_mode = le16_to_cpu(ri->i_mode);
	205	i_uid_write(inode, le32_to_cpu(ri->i_uid));
	206	i_gid_write(inode, le32_to_cpu(ri->i_gid));
	207	set_nlink(inode, le32_to_cpu(ri->i_links));
	208	inode->i_size = le64_to_cpu(ri->i_size);
13f00235	209	inode->i_blocks = SECTOR_FROM_BLOCK(le64_to_cpu(ri->i_blocks) - 1);
19f99cee JK	210
	211	inode->i_atime.tv_sec = le64_to_cpu(ri->i_atime);
	212	inode->i_ctime.tv_sec = le64_to_cpu(ri->i_ctime);
	213	inode->i_mtime.tv_sec = le64_to_cpu(ri->i_mtime);
	214	inode->i_atime.tv_nsec = le32_to_cpu(ri->i_atime_nsec);
	215	inode->i_ctime.tv_nsec = le32_to_cpu(ri->i_ctime_nsec);
	216	inode->i_mtime.tv_nsec = le32_to_cpu(ri->i_mtime_nsec);
	217	inode->i_generation = le32_to_cpu(ri->i_generation);
	218
	219	fi->i_current_depth = le32_to_cpu(ri->i_current_depth);
	220	fi->i_xattr_nid = le32_to_cpu(ri->i_xattr_nid);
	221	fi->i_flags = le32_to_cpu(ri->i_flags);
	222	fi->flags = 0;
19f99cee	223	fi->i_advise = ri->i_advise;
6666e6aa	224	fi->i_pino = le32_to_cpu(ri->i_pino);
38431545	225	fi->i_dir_level = ri->i_dir_level;
3d1e3807	226
c1286ff4 JK	227	if (f2fs_init_extent_tree(inode, &ri->i_ext))
c1286ff4 JK	228	set_page_dirty(node_page);
0c872e2d	229
c1286ff4	230	get_inline_info(inode, ri);
3d1e3807	231
13f00235 JK	232	fi->i_extra_isize = f2fs_has_extra_attr(inode) ?
	233	le16_to_cpu(ri->i_extra_isize) : 0;
	234
353c1624 JK	235	if (f2fs_sb_has_flexible_inline_xattr(sbi->sb)) {
	236	f2fs_bug_on(sbi, !f2fs_has_extra_attr(inode));
	237	fi->i_inline_xattr_size = le16_to_cpu(ri->i_inline_xattr_size);
	238	} else if (f2fs_has_inline_xattr(inode) \|\|
	239	f2fs_has_inline_dentry(inode)) {
	240	fi->i_inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS;
	241	} else {
	242
	243	/*
	244	* Previous inline data or directory always reserved 200 bytes
	245	* in inode layout, even if inline_xattr is disabled. In order
	246	* to keep inline_dentry's structure for backward compatibility,
	247	* we get the space back only from inline_data.
	248	*/
	249	fi->i_inline_xattr_size = 0;
	250	}
	251
b3d208f9 JK	252	/* check data exist */
b3d208f9 JK	253	if (f2fs_has_inline_data(inode) && !f2fs_exist_data(inode))
9e5ba77f	254	__recover_inline_status(inode, node_page);
b3d208f9	255
3d1e3807 JK	256	/* get rdev by using inline_info */
	257	__get_inode_rdev(inode, ri);
	258
3c6c2beb	259	if (__written_first_block(ri))
c1286ff4 JK	260	set_inode_flag(inode, FI_FIRST_BLOCK_WRITTEN);
	261
	262	if (!need_inode_block_update(sbi, inode->i_ino))
	263	fi->last_disk_size = inode->i_size;
3c6c2beb	264
13f00235 JK	265	if (fi->i_flags & FS_PROJINHERIT_FL)
	266	set_inode_flag(inode, FI_PROJ_INHERIT);
	267
	268	if (f2fs_has_extra_attr(inode) && f2fs_sb_has_project_quota(sbi->sb) &&
	269	F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_projid))
	270	i_projid = (projid_t)le32_to_cpu(ri->i_projid);
	271	else
	272	i_projid = F2FS_DEF_PROJID;
	273	fi->i_projid = make_kprojid(&init_user_ns, i_projid);
	274
19f99cee	275	f2fs_put_page(node_page, 1);
9d1015dd	276
d5e8f6c9	277	stat_inc_inline_xattr(inode);
9d1015dd JK	278	stat_inc_inline_inode(inode);
	279	stat_inc_inline_dir(inode);
	280
9e5ba77f	281	return 0;
19f99cee JK	282	}
	283
	284	struct inode f2fs_iget(struct super_block sb, unsigned long ino)
	285	{
	286	struct f2fs_sb_info *sbi = F2FS_SB(sb);
	287	struct inode *inode;
a2a4a7e4	288	int ret = 0;
19f99cee JK	289
	290	inode = iget_locked(sb, ino);
	291	if (!inode)
	292	return ERR_PTR(-ENOMEM);
a2a4a7e4 NJ	293
	294	if (!(inode->i_state & I_NEW)) {
	295	trace_f2fs_iget(inode);
19f99cee	296	return inode;
a2a4a7e4	297	}
19f99cee JK	298	if (ino == F2FS_NODE_INO(sbi) \|\| ino == F2FS_META_INO(sbi))
	299	goto make_now;
	300
	301	ret = do_read_inode(inode);
	302	if (ret)
	303	goto bad_inode;
19f99cee JK	304	make_now:
	305	if (ino == F2FS_NODE_INO(sbi)) {
	306	inode->i_mapping->a_ops = &f2fs_node_aops;
	307	mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_ZERO);
	308	} else if (ino == F2FS_META_INO(sbi)) {
	309	inode->i_mapping->a_ops = &f2fs_meta_aops;
	310	mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_ZERO);
	311	} else if (S_ISREG(inode->i_mode)) {
	312	inode->i_op = &f2fs_file_inode_operations;
	313	inode->i_fop = &f2fs_file_operations;
	314	inode->i_mapping->a_ops = &f2fs_dblock_aops;
	315	} else if (S_ISDIR(inode->i_mode)) {
	316	inode->i_op = &f2fs_dir_inode_operations;
	317	inode->i_fop = &f2fs_dir_operations;
	318	inode->i_mapping->a_ops = &f2fs_dblock_aops;
a78186eb	319	mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_HIGH_ZERO);
19f99cee	320	} else if (S_ISLNK(inode->i_mode)) {
cbaf042a JK	321	if (f2fs_encrypted_inode(inode))
	322	inode->i_op = &f2fs_encrypted_symlink_inode_operations;
	323	else
	324	inode->i_op = &f2fs_symlink_inode_operations;
c1286ff4	325	inode_nohighmem(inode);
19f99cee JK	326	inode->i_mapping->a_ops = &f2fs_dblock_aops;
	327	} else if (S_ISCHR(inode->i_mode) \|\| S_ISBLK(inode->i_mode) \|\|
	328	S_ISFIFO(inode->i_mode) \|\| S_ISSOCK(inode->i_mode)) {
	329	inode->i_op = &f2fs_special_inode_operations;
	330	init_special_inode(inode, inode->i_mode, inode->i_rdev);
	331	} else {
	332	ret = -EIO;
	333	goto bad_inode;
	334	}
13f00235	335	f2fs_set_inode_flags(inode);
19f99cee	336	unlock_new_inode(inode);
a2a4a7e4	337	trace_f2fs_iget(inode);
19f99cee JK	338	return inode;
	339
	340	bad_inode:
	341	iget_failed(inode);
a2a4a7e4	342	trace_f2fs_iget_exit(inode, ret);
19f99cee JK	343	return ERR_PTR(ret);
	344	}
	345
c1286ff4 JK	346	struct inode f2fs_iget_retry(struct super_block sb, unsigned long ino)
	347	{
	348	struct inode *inode;
	349	retry:
	350	inode = f2fs_iget(sb, ino);
	351	if (IS_ERR(inode)) {
	352	if (PTR_ERR(inode) == -ENOMEM) {
	353	congestion_wait(BLK_RW_ASYNC, HZ/50);
	354	goto retry;
	355	}
	356	}
	357	return inode;
	358	}
	359
	360	int update_inode(struct inode inode, struct page node_page)
19f99cee	361	{
19f99cee	362	struct f2fs_inode *ri;
1158df42	363	struct extent_tree *et = F2FS_I(inode)->extent_tree;
19f99cee	364
c1286ff4 JK	365	f2fs_inode_synced(inode);
	366
	367	f2fs_wait_on_page_writeback(node_page, NODE, true);
19f99cee	368
58bfaf44	369	ri = F2FS_INODE(node_page);
19f99cee JK	370
	371	ri->i_mode = cpu_to_le16(inode->i_mode);
	372	ri->i_advise = F2FS_I(inode)->i_advise;
	373	ri->i_uid = cpu_to_le32(i_uid_read(inode));
	374	ri->i_gid = cpu_to_le32(i_gid_read(inode));
	375	ri->i_links = cpu_to_le32(inode->i_nlink);
	376	ri->i_size = cpu_to_le64(i_size_read(inode));
13f00235	377	ri->i_blocks = cpu_to_le64(SECTOR_TO_BLOCK(inode->i_blocks) + 1);
0c872e2d	378
1158df42 CY	379	if (et) {
	380	read_lock(&et->lock);
	381	set_raw_extent(&et->largest, &ri->i_ext);
	382	read_unlock(&et->lock);
	383	} else {
3e72f721	384	memset(&ri->i_ext, 0, sizeof(ri->i_ext));
1158df42	385	}
c1286ff4	386	set_raw_inline(inode, ri);
19f99cee JK	387
	388	ri->i_atime = cpu_to_le64(inode->i_atime.tv_sec);
	389	ri->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec);
	390	ri->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec);
	391	ri->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec);
	392	ri->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec);
	393	ri->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec);
	394	ri->i_current_depth = cpu_to_le32(F2FS_I(inode)->i_current_depth);
	395	ri->i_xattr_nid = cpu_to_le32(F2FS_I(inode)->i_xattr_nid);
	396	ri->i_flags = cpu_to_le32(F2FS_I(inode)->i_flags);
6666e6aa	397	ri->i_pino = cpu_to_le32(F2FS_I(inode)->i_pino);
19f99cee	398	ri->i_generation = cpu_to_le32(inode->i_generation);
38431545	399	ri->i_dir_level = F2FS_I(inode)->i_dir_level;
7d79e75f	400
13f00235 JK	401	if (f2fs_has_extra_attr(inode)) {
	402	ri->i_extra_isize = cpu_to_le16(F2FS_I(inode)->i_extra_isize);
	403
353c1624 JK	404	if (f2fs_sb_has_flexible_inline_xattr(F2FS_I_SB(inode)->sb))
	405	ri->i_inline_xattr_size =
	406	cpu_to_le16(F2FS_I(inode)->i_inline_xattr_size);
	407
13f00235 JK	408	if (f2fs_sb_has_project_quota(F2FS_I_SB(inode)->sb) &&
	409	F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize,
	410	i_projid)) {
	411	projid_t i_projid;
	412
	413	i_projid = from_kprojid(&init_user_ns,
	414	F2FS_I(inode)->i_projid);
	415	ri->i_projid = cpu_to_le32(i_projid);
	416	}
	417	}
	418
3d1e3807	419	__set_inode_rdev(inode, ri);
398b1ac5	420	set_cold_node(inode, node_page);
3d1e3807	421
c1286ff4 JK	422	/* deleted inode */
	423	if (inode->i_nlink == 0)
	424	clear_inline_node(node_page);
	425
	426	return set_page_dirty(node_page);
19f99cee JK	427	}
19f99cee JK	428
c1286ff4	429	int update_inode_page(struct inode *inode)
19f99cee	430	{
4081363f	431	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
19f99cee	432	struct page *node_page;
c1286ff4	433	int ret = 0;
744602cf	434	retry:
19f99cee	435	node_page = get_node_page(sbi, inode->i_ino);
744602cf JK	436	if (IS_ERR(node_page)) {
	437	int err = PTR_ERR(node_page);
	438	if (err == -ENOMEM) {
	439	cond_resched();
	440	goto retry;
	441	} else if (err != -ENOENT) {
c1286ff4	442	f2fs_stop_checkpoint(sbi, false);
744602cf	443	}
c1286ff4	444	return 0;
744602cf	445	}
c1286ff4	446	ret = update_inode(inode, node_page);
19f99cee	447	f2fs_put_page(node_page, 1);
c1286ff4	448	return ret;
19f99cee JK	449	}
19f99cee JK	450
39936837 JK	451	int f2fs_write_inode(struct inode inode, struct writeback_control wbc)
39936837 JK	452	{
4081363f	453	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
39936837 JK	454
	455	if (inode->i_ino == F2FS_NODE_INO(sbi) \|\|
	456	inode->i_ino == F2FS_META_INO(sbi))
	457	return 0;
	458
c1286ff4	459	if (!is_inode_flag_set(inode, FI_DIRTY_INODE))
b3783873 JK	460	return 0;
b3783873 JK	461
39936837	462	/*
c5cd29d2	463	* We need to balance fs here to prevent from producing dirty node pages
39936837 JK	464	* during the urgent cleaning time when runing out of free sections.
39936837 JK	465	*/
13f00235 JK	466	update_inode_page(inode);
13f00235 JK	467	if (wbc && wbc->nr_to_write)
c1286ff4	468	f2fs_balance_fs(sbi, true);
744602cf	469	return 0;
39936837 JK	470	}
39936837 JK	471
0a8165d7	472	/*
19f99cee JK	473	* Called at the last iput() if i_nlink is zero
	474	*/
	475	void f2fs_evict_inode(struct inode *inode)
	476	{
4081363f	477	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
c1286ff4	478	nid_t xnid = F2FS_I(inode)->i_xattr_nid;
13ec7297	479	int err = 0;
19f99cee	480
88b88a66	481	/* some remained atomic pages should discarded */
1e84371f	482	if (f2fs_is_atomic_file(inode))
c1286ff4	483	drop_inmem_pages(inode);
88b88a66	484
a2a4a7e4	485	trace_f2fs_evict_inode(inode);
91b0abe3	486	truncate_inode_pages_final(&inode->i_data);
19f99cee JK	487
	488	if (inode->i_ino == F2FS_NODE_INO(sbi) \|\|
	489	inode->i_ino == F2FS_META_INO(sbi))
dbf20cb2	490	goto out_clear;
19f99cee	491
a7ffdbe2	492	f2fs_bug_on(sbi, get_dirty_pages(inode));
c1286ff4	493	remove_dirty_inode(inode);
19f99cee	494
3e72f721 JK	495	f2fs_destroy_extent_tree(inode);
3e72f721 JK	496
19f99cee JK	497	if (inode->i_nlink \|\| is_bad_inode(inode))
	498	goto no_delete;
	499
13f00235	500	dquot_initialize(inode);
c1286ff4	501
c82c6b15 CY	502	remove_ino_entry(sbi, inode->i_ino, APPEND_INO);
c82c6b15 CY	503	remove_ino_entry(sbi, inode->i_ino, UPDATE_INO);
353c1624	504	remove_ino_entry(sbi, inode->i_ino, FLUSH_INO);
c82c6b15	505
d6212a5f	506	sb_start_intwrite(inode->i_sb);
c1286ff4	507	set_inode_flag(inode, FI_NO_ALLOC);
19f99cee	508	i_size_write(inode, 0);
c1286ff4	509	retry:
19f99cee	510	if (F2FS_HAS_BLOCKS(inode))
c1286ff4	511	err = f2fs_truncate(inode);
19f99cee	512
13f00235 JK	513	#ifdef CONFIG_F2FS_FAULT_INJECTION
	514	if (time_to_inject(sbi, FAULT_EVICT_INODE)) {
	515	f2fs_show_injection_info(FAULT_EVICT_INODE);
	516	err = -EIO;
	517	}
	518	#endif
13ec7297 CY	519	if (!err) {
	520	f2fs_lock_op(sbi);
	521	err = remove_inode_page(inode);
	522	f2fs_unlock_op(sbi);
8db33887 CY	523	if (err == -ENOENT)
8db33887 CY	524	err = 0;
13ec7297	525	}
39936837	526
c1286ff4 JK	527	/* give more chances, if ENOMEM case */
	528	if (err == -ENOMEM) {
	529	err = 0;
	530	goto retry;
	531	}
	532
	533	if (err)
	534	update_inode_page(inode);
13f00235	535	dquot_free_inode(inode);
d6212a5f	536	sb_end_intwrite(inode->i_sb);
19f99cee	537	no_delete:
13f00235 JK	538	dquot_drop(inode);
13f00235 JK	539
d5e8f6c9	540	stat_dec_inline_xattr(inode);
3289c061	541	stat_dec_inline_dir(inode);
e7a2bf22	542	stat_dec_inline_inode(inode);
0bdee482	543
353c1624	544	if (likely(!is_set_ckpt_flags(sbi, CP_ERROR_FLAG)))
13f00235	545	f2fs_bug_on(sbi, is_inode_flag_set(inode, FI_DIRTY_INODE));
353c1624 JK	546	else
353c1624 JK	547	f2fs_inode_synced(inode);
13f00235 JK	548
	549	/* ino == 0, if f2fs_new_inode() was failed t*/
	550	if (inode->i_ino)
	551	invalidate_mapping_pages(NODE_MAPPING(sbi), inode->i_ino,
	552	inode->i_ino);
002a41ca CY	553	if (xnid)
002a41ca CY	554	invalidate_mapping_pages(NODE_MAPPING(sbi), xnid, xnid);
c82c6b15 CY	555	if (inode->i_nlink) {
	556	if (is_inode_flag_set(inode, FI_APPEND_WRITE))
	557	add_ino_entry(sbi, inode->i_ino, APPEND_INO);
	558	if (is_inode_flag_set(inode, FI_UPDATE_WRITE))
	559	add_ino_entry(sbi, inode->i_ino, UPDATE_INO);
	560	}
c1286ff4 JK	561	if (is_inode_flag_set(inode, FI_FREE_NID)) {
	562	alloc_nid_failed(sbi, inode->i_ino);
	563	clear_inode_flag(inode, FI_FREE_NID);
13f00235 JK	564	} else {
	565	f2fs_bug_on(sbi, err &&
	566	!exist_written_data(sbi, inode->i_ino, ORPHAN_INO));
13ec7297	567	}
dbf20cb2	568	out_clear:
c1286ff4	569	fscrypt_put_encryption_info(inode, NULL);
dbf20cb2	570	clear_inode(inode);
19f99cee	571	}
44c16156 JK	572
	573	/* caller should call f2fs_lock_op() */
	574	void handle_failed_inode(struct inode *inode)
	575	{
	576	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
c1286ff4	577	struct node_info ni;
44c16156	578
8db33887 CY	579	/*
	580	* clear nlink of inode in order to release resource of inode
	581	* immediately.
	582	*/
	583	clear_nlink(inode);
	584
	585	/*
	586	* we must call this to avoid inode being remained as dirty, resulting
	587	* in a panic when flushing dirty inodes in gdirty_list.
	588	*/
	589	update_inode_page(inode);
13f00235	590	f2fs_inode_synced(inode);
8db33887	591
c1286ff4	592	/* don't make bad inode, since it becomes a regular file. */
44c16156 JK	593	unlock_new_inode(inode);
44c16156 JK	594
13ec7297	595	/*
13ec7297 CY	596	* Note: we should add inode to orphan list before f2fs_unlock_op()
	597	* so we can prevent losing this orphan when encoutering checkpoint
	598	* and following suddenly power-off.
	599	*/
c1286ff4 JK	600	get_node_info(sbi, inode->i_ino, &ni);
	601
	602	if (ni.blk_addr != NULL_ADDR) {
	603	int err = acquire_orphan_inode(sbi);
	604	if (err) {
	605	set_sbi_flag(sbi, SBI_NEED_FSCK);
	606	f2fs_msg(sbi->sb, KERN_WARNING,
	607	"Too many orphan inodes, run fsck to fix.");
	608	} else {
	609	add_orphan_inode(inode);
	610	}
	611	alloc_nid_done(sbi, inode->i_ino);
	612	} else {
	613	set_inode_flag(inode, FI_FREE_NID);
13ec7297	614	}
44c16156	615
44c16156 JK	616	f2fs_unlock_op(sbi);
	617
	618	/* iput will drop the inode object */
	619	iput(inode);
	620	}