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| author |   Chao Yu <chao2.yu@samsung.com> | 2014-09-24 18:15:19 +0800 |
|---|---|---|
| committer |   Jaegeuk Kim <jaegeuk@kernel.org> | 2014-11-03 16:07:31 -0800 |
| commit | 34d67debe02b3b2b035b5bdce0fab75800f9a344 (patch) | |
| tree | fbe93f75c59654f3652ce6e718658571e272d233 /include/linux/f2fs_fs.h | |
| parent | f2fs: avoid infinite loop at cp_error (diff) | |
| download | linux-dev-34d67debe02b3b2b035b5bdce0fab75800f9a344.tar.xz linux-dev-34d67debe02b3b2b035b5bdce0fab75800f9a344.zip | |
f2fs: add infra struct and helper for inline dir
This patch defines macro/inline dentry structure, and adds some helpers for
inline dir infrastructure.
Signed-off-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'include/linux/f2fs_fs.h')
| -rw-r--r-- | include/linux/f2fs_fs.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/include/linux/f2fs_fs.h b/include/linux/f2fs_fs.h index 6d7381b41304..63f8303b79ba 100644 --- a/include/linux/f2fs_fs.h +++ b/include/linux/f2fs_fs.h @@ -171,6 +171,7 @@ struct f2fs_extent { #define F2FS_INLINE_XATTR 0x01 /* file inline xattr flag */ #define F2FS_INLINE_DATA 0x02 /* file inline data flag */ +#define F2FS_INLINE_DENTRY 0x04 /* file inline dentry flag */ #define MAX_INLINE_DATA (sizeof(__le32) * (DEF_ADDRS_PER_INODE - \ F2FS_INLINE_XATTR_ADDRS - 1)) @@ -436,6 +437,24 @@ struct f2fs_dentry_block { __u8 filename[NR_DENTRY_IN_BLOCK][F2FS_SLOT_LEN]; } __packed; +/* for inline dir */ +#define NR_INLINE_DENTRY (MAX_INLINE_DATA * BITS_PER_BYTE / \ + ((SIZE_OF_DIR_ENTRY + F2FS_SLOT_LEN) * \ + BITS_PER_BYTE + 1)) +#define INLINE_DENTRY_BITMAP_SIZE ((NR_INLINE_DENTRY + \ + BITS_PER_BYTE - 1) / BITS_PER_BYTE) +#define INLINE_RESERVED_SIZE (MAX_INLINE_DATA - \ + ((SIZE_OF_DIR_ENTRY + F2FS_SLOT_LEN) * \ + NR_INLINE_DENTRY + INLINE_DENTRY_BITMAP_SIZE)) + +/* inline directory entry structure */ +struct f2fs_inline_dentry { + __u8 dentry_bitmap[INLINE_DENTRY_BITMAP_SIZE]; + __u8 reserved[INLINE_RESERVED_SIZE]; + struct f2fs_dir_entry dentry[NR_INLINE_DENTRY]; + __u8 filename[NR_INLINE_DENTRY][F2FS_SLOT_LEN]; +} __packed; + /* file types used in inode_info->flags */ enum { F2FS_FT_UNKNOWN, |