diff options
author | Jaegeuk Kim <jaegeuk.kim@samsung.com> | 2014-02-27 20:09:05 +0900 |
---|---|---|
committer | Ziyan <jaraidaniel@gmail.com> | 2015-05-02 14:36:26 +0200 |
commit | 3e6a78a992bcc01af38eb871896136214267b941 (patch) | |
tree | 7b69b6276859ff95fbaf344b7f7b5b9962627d2a /Documentation/filesystems | |
parent | 3f13efaf643a7b9cbc392f9363b85b5614c681bc (diff) | |
download | kernel_samsung_tuna-3e6a78a992bcc01af38eb871896136214267b941.tar.gz kernel_samsung_tuna-3e6a78a992bcc01af38eb871896136214267b941.tar.bz2 kernel_samsung_tuna-3e6a78a992bcc01af38eb871896136214267b941.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 5be6b6d9d8c..89dd97755a8 100644 --- a/Documentation/filesystems/f2fs.txt +++ b/Documentation/filesystems/f2fs.txt @@ -187,6 +187,13 @@ 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 ================================================================================ |