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f2fs: add description about small_discards in document

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This patch adds a description about small_disacrds in the f2fs document.

Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
This commit is contained in:
Jaegeuk Kim 2013-12-19 17:44:41 +09:00
parent 5459aa9770
commit ba0697ec98
1 changed files with 6 additions and 0 deletions
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6
Documentation/filesystems/f2fs.txt
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@ -171,6 +171,12 @@ Files in /sys/fs/f2fs/<devname>
conduct checkpoint to reclaim the prefree segments
to free segments. By default, 100 segments, 200MB.
max_small_discards This parameter controls the number of discard
commands that consist small blocks less than 2MB.
The candidates to be discarded are cached until
checkpoint is triggered, and issued during the
checkpoint. By default, it is disabled with 0.
ipu_policy This parameter controls the policy of in-place
updates in f2fs. There are five policies:
0: F2FS_IPU_FORCE, 1: F2FS_IPU_SSR,