summaryrefslogtreecommitdiffstats
path: root/Documentation/ABI
diff options
context:
space:
mode:
authorChao Yu <yuchao0@huawei.com>2018-10-25 10:19:28 +0200
committerJaegeuk Kim <jaegeuk@kernel.org>2018-11-27 00:53:56 +0100
commit3465557556b45a933cf3566d4040fd66aa2fc87b (patch)
tree74ebf4ece775a30da2537f2116fdb52b0591bc61 /Documentation/ABI
parentf2fs: support subsectional garbage collection (diff)
downloadlinux-3465557556b45a933cf3566d4040fd66aa2fc87b.tar.xz
linux-3465557556b45a933cf3566d4040fd66aa2fc87b.zip
f2fs: export migration_granularity sysfs entry
Add one sysfs entry to control migration granularity of GC in large section f2fs, it can be tuned to mitigate heavy overhead of migrating huge number of blocks in large section. Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'Documentation/ABI')
-rw-r--r--Documentation/ABI/testing/sysfs-fs-f2fs9
1 files changed, 9 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-fs-f2fs b/Documentation/ABI/testing/sysfs-fs-f2fs
index 3ac41774ad3c..a7ce33199457 100644
--- a/Documentation/ABI/testing/sysfs-fs-f2fs
+++ b/Documentation/ABI/testing/sysfs-fs-f2fs
@@ -92,6 +92,15 @@ Contact: "Jaegeuk Kim" <jaegeuk.kim@samsung.com>
Description:
Controls the number of trials to find a victim segment.
+What: /sys/fs/f2fs/<disk>/migration_granularity
+Date: October 2018
+Contact: "Chao Yu" <yuchao0@huawei.com>
+Description:
+ Controls migration granularity of garbage collection on large
+ section, it can let GC move partial segment{s} of one section
+ in one GC cycle, so that dispersing heavy overhead GC to
+ multiple lightweight one.
+
What: /sys/fs/f2fs/<disk>/dir_level
Date: March 2014
Contact: "Jaegeuk Kim" <jaegeuk.kim@samsung.com>