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| author | Jaegeuk Kim <jaegeuk@kernel.org> | 2017-08-06 22:09:00 -0700 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2017-09-21 14:11:54 -0700 |
| commit | bdf6e5ea9299f0893e3b304316941ae40a7a3897 (patch) | |
| tree | 88c69d35b3e0affc93957e41ca4de7e2346a86e3 /Documentation/filesystems | |
| parent | 2d982d49c3205e47fc8bf92ee98c4a4e90e67cfd (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 5cf383f7fa8a..8a3f991098ad 100644 --- a/Documentation/filesystems/f2fs.txt +++ b/Documentation/filesystems/f2fs.txt @@ -208,6 +208,15 @@ 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 |