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| author | Namjae Jeon <namjae.jeon@samsung.com> | 2013-08-04 18:09:40 +0400 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk.kim@samsung.com> | 2013-08-06 16:53:34 +0400 |
| commit | b59d0bae6ca30c496f298881616258f9cde0d9c6 (patch) | |
| tree | 04c6a23cfed2ef045a56ca090cbfd510ca3e5e5e /Documentation | |
| parent | f0c5e565bb05a4cd6105bb197c56078462252e78 (diff) | |
| download | linux-b59d0bae6ca30c496f298881616258f9cde0d9c6.tar.xz | |
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')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-fs-f2fs | 20 | ||||
| -rw-r--r-- | Documentation/filesystems/f2fs.txt | 26 |
2 files changed, 46 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-fs-f2fs b/Documentation/ABI/testing/sysfs-fs-f2fs new file mode 100644 index 000000000000..98e53a09530a --- /dev/null +++ b/Documentation/ABI/testing/sysfs-fs-f2fs @@ -0,0 +1,20 @@ +What: /sys/fs/f2fs/<disk>/gc_max_sleep_time +Date: July 2013 +Contact: "Namjae Jeon" <namjae.jeon@samsung.com> +Description: + Controls the maximun sleep time for gc_thread. Time + is in milliseconds. + +What: /sys/fs/f2fs/<disk>/gc_min_sleep_time +Date: July 2013 +Contact: "Namjae Jeon" <namjae.jeon@samsung.com> +Description: + Controls the minimum sleep time for gc_thread. Time + is in milliseconds. + +What: /sys/fs/f2fs/<disk>/gc_no_gc_sleep_time +Date: July 2013 +Contact: "Namjae Jeon" <namjae.jeon@samsung.com> +Description: + Controls the default sleep time for gc_thread. Time + is in milliseconds. 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 ================================================================================ |