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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 /Documentation/filesystems | |
| parent | f2fs: introduce large directory support (diff) | |
| download | linux-dev-ab9fa662e4867455f44f4de96d29a7f09cf292c6.tar.xz linux-dev-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 'Documentation/filesystems')
| -rw-r--r-- | Documentation/filesystems/f2fs.txt | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/Documentation/filesystems/f2fs.txt b/Documentation/filesystems/f2fs.txt index 8eb06b0a7d2b..803784e1e8ef 100644 --- a/Documentation/filesystems/f2fs.txt +++ b/Documentation/filesystems/f2fs.txt @@ -195,6 +195,13 @@ Files in /sys/fs/f2fs/<devname> cleaning operations. The default value is 4096 which covers 8GB block address range. + 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. + ================================================================================ USAGE ================================================================================ |