f2fs: add quota_ino feature infra

This patch adds quota_ino feature infra to be used for quota files.

Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 4a75f07f1dc838e1e48171c42b53cf96b2516d8e..9a1c7ffa684593f505083b297ceceeb3caf25079 100644 (file)
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -122,6 +122,7 @@ struct f2fs_mount_info {
 #define F2FS_FEATURE_PRJQUOTA          0x0010
 #define F2FS_FEATURE_INODE_CHKSUM      0x0020
 #define F2FS_FEATURE_FLEXIBLE_INLINE_XATTR     0x0040
+#define F2FS_FEATURE_QUOTA_INO         0x0080
 
 #define F2FS_HAS_FEATURE(sb, mask)                                     \
        ((F2FS_SB(sb)->raw_super->feature & cpu_to_le32(mask)) != 0)
@@ -3070,6 +3071,11 @@ static inline int f2fs_sb_has_flexible_inline_xattr(struct super_block *sb)
        return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_FLEXIBLE_INLINE_XATTR);
 }
 
+static inline int f2fs_sb_has_quota_ino(struct super_block *sb)
+{
+       return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_QUOTA_INO);
+}
+
 #ifdef CONFIG_BLK_DEV_ZONED
 static inline int get_blkz_type(struct f2fs_sb_info *sbi,
                        struct block_device *bdev, block_t blkaddr)

diff --git a/fs/f2fs/sysfs.c b/fs/f2fs/sysfs.c
index f0fdc89ce82fe42c845b7f5f8e5132dd67dbecfd..9835348b6e5d200b71112c2eb65ad101d5bd3be0 100644 (file)
--- a/fs/f2fs/sysfs.c
+++ b/fs/f2fs/sysfs.c
@@ -110,6 +110,9 @@ static ssize_t features_show(struct f2fs_attr *a,
        if (f2fs_sb_has_flexible_inline_xattr(sb))
                len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
                                len ? ", " : "", "flexible_inline_xattr");
+       if (f2fs_sb_has_quota_ino(sb))
+               len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
+                               len ? ", " : "", "quota_ino");
        len += snprintf(buf + len, PAGE_SIZE - len, "\n");
        return len;
 }
@@ -227,6 +230,7 @@ enum feat_id {
        FEAT_PROJECT_QUOTA,
        FEAT_INODE_CHECKSUM,
        FEAT_FLEXIBLE_INLINE_XATTR,
+       FEAT_QUOTA_INO,
 };
 
 static ssize_t f2fs_feature_show(struct f2fs_attr *a,
@@ -240,6 +244,7 @@ static ssize_t f2fs_feature_show(struct f2fs_attr *a,
        case FEAT_PROJECT_QUOTA:
        case FEAT_INODE_CHECKSUM:
        case FEAT_FLEXIBLE_INLINE_XATTR:
+       case FEAT_QUOTA_INO:
                return snprintf(buf, PAGE_SIZE, "supported\n");
        }
        return 0;
@@ -314,6 +319,7 @@ F2FS_FEATURE_RO_ATTR(extra_attr, FEAT_EXTRA_ATTR);
 F2FS_FEATURE_RO_ATTR(project_quota, FEAT_PROJECT_QUOTA);
 F2FS_FEATURE_RO_ATTR(inode_checksum, FEAT_INODE_CHECKSUM);
 F2FS_FEATURE_RO_ATTR(flexible_inline_xattr, FEAT_FLEXIBLE_INLINE_XATTR);
+F2FS_FEATURE_RO_ATTR(quota_ino, FEAT_QUOTA_INO);
 
 #define ATTR_LIST(name) (&f2fs_attr_##name.attr)
 static struct attribute *f2fs_attrs[] = {
@@ -364,6 +370,7 @@ static struct attribute *f2fs_feat_attrs[] = {
        ATTR_LIST(project_quota),
        ATTR_LIST(inode_checksum),
        ATTR_LIST(flexible_inline_xattr),
+       ATTR_LIST(quota_ino),
        NULL,
 };
 

diff --git a/include/linux/f2fs_fs.h b/include/linux/f2fs_fs.h
index 50a8ee501bf134c5ca66918b3c249b6a6198f4b9..ce34007972c380c2ffe949e1d036769dd572b8fa 100644 (file)
--- a/include/linux/f2fs_fs.h
+++ b/include/linux/f2fs_fs.h
@@ -36,6 +36,9 @@
 #define F2FS_NODE_INO(sbi)     ((sbi)->node_ino_num)
 #define F2FS_META_INO(sbi)     ((sbi)->meta_ino_num)
 
+#define F2FS_QUOTA_INO         3
+#define F2FS_MAX_QUOTAS                3
+
 #define F2FS_IO_SIZE(sbi)      (1 << (sbi)->write_io_size_bits) /* Blocks */
 #define F2FS_IO_SIZE_KB(sbi)   (1 << ((sbi)->write_io_size_bits + 2)) /* KB */
 #define F2FS_IO_SIZE_BYTES(sbi)        (1 << ((sbi)->write_io_size_bits + 12)) /* B */
@@ -108,7 +111,8 @@ struct f2fs_super_block {
        __u8 encryption_level;          /* versioning level for encryption */
        __u8 encrypt_pw_salt[16];       /* Salt used for string2key algorithm */
        struct f2fs_device devs[MAX_DEVICES];   /* device list */
-       __u8 reserved[327];             /* valid reserved region */
+       __le32 qf_ino[F2FS_MAX_QUOTAS]; /* quota inode numbers */
+       __u8 reserved[315];             /* valid reserved region */
 } __packed;
 
 /*