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| author | Jaegeuk Kim <jaegeuk@kernel.org> | 2017-08-06 22:09:00 -0700 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2017-08-15 10:40:12 -0700 |
| commit | d9872a698c393e0d1abca86bf05b62712cbfc581 (patch) | |
| tree | e7c272fc1fed41d2a4590f381c0fa5bb983c02f9 /Documentation/filesystems | |
| parent | 3537581a722402a1e6f0942cd0653035a9e09e21 (diff) | |
f2fs: introduce gc_urgent mode for background GC
This patch adds a sysfs entry to control urgent mode for background GC.
If this is set, background GC thread conducts GC with gc_urgent_sleep_time
all the time.
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'Documentation/filesystems')
| -rw-r--r-- | Documentation/filesystems/f2fs.txt | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/Documentation/filesystems/f2fs.txt b/Documentation/filesystems/f2fs.txt index b8f495a8b67d..84f36896766c 100644 --- a/Documentation/filesystems/f2fs.txt +++ b/Documentation/filesystems/f2fs.txt @@ -210,6 +210,15 @@ Files in /sys/fs/f2fs/<devname> gc_idle = 1 will select the Cost Benefit approach & setting gc_idle = 2 will select the greedy approach. + gc_urgent This parameter controls triggering background GCs + urgently or not. Setting gc_urgent = 0 [default] + makes back to default behavior, while if it is set + to 1, background thread starts to do GC by given + gc_urgent_sleep_time interval. + + gc_urgent_sleep_time This parameter controls sleep time for gc_urgent. + 500 ms is set by default. See above gc_urgent. + reclaim_segments This parameter controls the number of prefree segments to be reclaimed. If the number of prefree segments is larger than the number of segments |