From 58c410351eba3d24f741c85a0eb9eaf15c94047d Mon Sep 17 00:00:00 2001 From: Jaegeuk Kim Date: Wed, 19 Mar 2014 14:17:21 +0900 Subject: f2fs: change reclaim rate in percentage It is more reasonable to determine the reclaiming rate of prefree segments according to the volume size, which is set to 5% by default. For example, if the volume is 128GB, the prefree segments are reclaimed when the number reaches to 6.4GB. Signed-off-by: Jaegeuk Kim --- Documentation/filesystems/f2fs.txt | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) (limited to 'Documentation/filesystems/f2fs.txt') diff --git a/Documentation/filesystems/f2fs.txt b/Documentation/filesystems/f2fs.txt index f415b9fc4cc..2f6d0218dd2 100644 --- a/Documentation/filesystems/f2fs.txt +++ b/Documentation/filesystems/f2fs.txt @@ -169,9 +169,11 @@ Files in /sys/fs/f2fs/ 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. + segments is larger than the number of segments + in the proportion to the percentage over total + volume size, f2fs tries to conduct checkpoint to + reclaim the prefree segments to free segments. + By default, 5% over total # of segments. max_small_discards This parameter controls the number of discard commands that consist small blocks less than 2MB. -- cgit v1.2.3-70-g09d2