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f2fs: add reclaiming control by sysfs

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This patch adds a control method in sysfs to reclaim prefree segments.

Signed-off-by: Changman Lee <cm224.lee@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
This commit is contained in:
Jaegeuk Kim
2013-10-24 15:49:07 +09:00
parent 4660f9c0fe
commit ea91e9b043
2 changed files with 42 additions and 14 deletions
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6
Documentation/filesystems/f2fs.txt
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@@ -164,6 +164,12 @@ Files in /sys/fs/f2fs/<devname>
gc_idle = 1 will select the Cost Benefit approach
& setting gc_idle = 2 will select the greedy aproach.
reclaim_segments This parameter controls the number of prefree
segments to be reclaimed. If the number of prefree
segments is larger than this number, f2fs tries to
conduct checkpoint to reclaim the prefree segments
to free segments. By default, 100 segments, 200MB.
================================================================================
USAGE
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