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authorNamjae Jeon <namjae.jeon@samsung.com>2013-08-04 23:09:40 +0900
committerJaegeuk Kim <jaegeuk.kim@samsung.com>2013-08-06 21:53:34 +0900
commitb59d0bae6ca30c496f298881616258f9cde0d9c6 (patch)
tree04c6a23cfed2ef045a56ca090cbfd510ca3e5e5e /Documentation/filesystems
parentf0c5e565bb05a4cd6105bb197c56078462252e78 (diff)
downloadblackbird-op-linux-b59d0bae6ca30c496f298881616258f9cde0d9c6.tar.gz
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f2fs: add sysfs support for controlling the gc_thread
Add sysfs entries to control the timing parameters for f2fs gc thread. Various Sysfs options introduced are: gc_min_sleep_time: Min Sleep time for GC in ms gc_max_sleep_time: Max Sleep time for GC in ms gc_no_gc_sleep_time: Default Sleep time for GC in ms Cc: Gu Zheng <guz.fnst@cn.fujitsu.com> Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Pankaj Kumar <pankaj.km@samsung.com> Reviewed-by: Gu Zheng <guz.fnst@cn.fujitsu.com> [Jaegeuk Kim: fix an umount bug and some minor changes] Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
Diffstat (limited to 'Documentation/filesystems')
-rw-r--r--Documentation/filesystems/f2fs.txt26
1 files changed, 26 insertions, 0 deletions
diff --git a/Documentation/filesystems/f2fs.txt b/Documentation/filesystems/f2fs.txt
index 0500c198cd08..5daf3bb2eef9 100644
--- a/Documentation/filesystems/f2fs.txt
+++ b/Documentation/filesystems/f2fs.txt
@@ -133,6 +133,32 @@ f2fs. Each file shows the whole f2fs information.
- current memory footprint consumed by f2fs.
================================================================================
+SYSFS ENTRIES
+================================================================================
+
+Information about mounted f2f2 file systems can be found in
+/sys/fs/f2fs. Each mounted filesystem will have a directory in
+/sys/fs/f2fs based on its device name (i.e., /sys/fs/f2fs/sda).
+The files in each per-device directory are shown in table below.
+
+Files in /sys/fs/f2fs/<devname>
+(see also Documentation/ABI/testing/sysfs-fs-f2fs)
+..............................................................................
+ File Content
+
+ gc_max_sleep_time This tuning parameter controls the maximum sleep
+ time for the garbage collection thread. Time is
+ in milliseconds.
+
+ gc_min_sleep_time This tuning parameter controls the minimum sleep
+ time for the garbage collection thread. Time is
+ in milliseconds.
+
+ gc_no_gc_sleep_time This tuning parameter controls the default sleep
+ time for the garbage collection thread. Time is
+ in milliseconds.
+
+================================================================================
USAGE
================================================================================
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