From b59d0bae6ca30c496f298881616258f9cde0d9c6 Mon Sep 17 00:00:00 2001 From: Namjae Jeon Date: Sun, 4 Aug 2013 23:09:40 +0900 Subject: 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 Signed-off-by: Namjae Jeon Signed-off-by: Pankaj Kumar Reviewed-by: Gu Zheng [Jaegeuk Kim: fix an umount bug and some minor changes] Signed-off-by: Jaegeuk Kim --- Documentation/filesystems/f2fs.txt | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) (limited to 'Documentation/filesystems') 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 @@ -132,6 +132,32 @@ f2fs. Each file shows the whole f2fs information. - average SIT information about whole segments - 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/ +(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 ================================================================================ -- cgit v1.2.3