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| author | Jaegeuk Kim <jaegeuk.kim@samsung.com> | 2014-02-27 20:09:05 +0900 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk.kim@samsung.com> | 2014-02-27 20:31:15 +0900 |
| commit | ab9fa662e4867455f44f4de96d29a7f09cf292c6 (patch) | |
| tree | efa4cc308d41d83c0bd527df11bda8ca48e5eca8 /fs/f2fs/f2fs.h | |
| parent | 3843154598a00408f4214a68bd536fdf27b1df10 (diff) | |
| download | blackbird-op-linux-ab9fa662e4867455f44f4de96d29a7f09cf292c6.tar.gz blackbird-op-linux-ab9fa662e4867455f44f4de96d29a7f09cf292c6.zip | |
f2fs: add an sysfs entry to control the directory level
This patch adds an sysfs entry to control dir_level used by the large directory.
The description of this entry is:
dir_level This parameter controls the directory level to
support large directory. If a directory has a
number of files, it can reduce the file lookup
latency by increasing this dir_level value.
Otherwise, it needs to decrease this value to
reduce the space overhead. The default value is 0.
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
Diffstat (limited to 'fs/f2fs/f2fs.h')
| -rw-r--r-- | fs/f2fs/f2fs.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index a82691674918..6f88191f2a34 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -196,6 +196,8 @@ struct extent_info { #define FADVISE_COLD_BIT 0x01 #define FADVISE_LOST_PINO_BIT 0x02 +#define DEF_DIR_LEVEL 0 + struct f2fs_inode_info { struct inode vfs_inode; /* serve a vfs inode */ unsigned long i_flags; /* keep an inode flags for ioctl */ @@ -447,6 +449,7 @@ struct f2fs_sb_info { unsigned int total_valid_node_count; /* valid node block count */ unsigned int total_valid_inode_count; /* valid inode count */ int active_logs; /* # of active logs */ + int dir_level; /* directory level */ block_t user_block_count; /* # of user blocks */ block_t total_valid_block_count; /* # of valid blocks */ |
