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| author | Namjae Jeon <namjae.jeon@samsung.com> | 2013-08-04 23:10:15 +0900 |
|---|---|---|
| committer | Ziyan <jaraidaniel@gmail.com> | 2015-05-02 14:34:55 +0200 |
| commit | 5ee43c1aec933ab4d52a7b6176c43c39d48414e4 (patch) | |
| tree | c47ce3ce59cb5f6592a25bdc8cf67221171909bb /Documentation | |
| parent | 9744e4cf33090686735fec52dba78e81de4b9f33 (diff) | |
| download | kernel_samsung_tuna-5ee43c1aec933ab4d52a7b6176c43c39d48414e4.zip kernel_samsung_tuna-5ee43c1aec933ab4d52a7b6176c43c39d48414e4.tar.gz kernel_samsung_tuna-5ee43c1aec933ab4d52a7b6176c43c39d48414e4.tar.bz2 | |
f2fs: add sysfs entries to select the gc policy
Add sysfs entry gc_idle to control the gc policy. Where
gc_idle = 1 corresponds to selecting a cost benefit approach,
while gc_idle = 2 corresponds to selecting a greedy approach
to garbage collection. The selection is mutually exclusive one
approach will work at any point. If gc_idle = 0, then this
option is disabled.
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: change the select_gc_type() flow slightly]
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-fs-f2fs | 6 | ||||
| -rw-r--r-- | Documentation/filesystems/f2fs.txt | 6 |
2 files changed, 12 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-fs-f2fs b/Documentation/ABI/testing/sysfs-fs-f2fs index 98e53a0..31942ef 100644 --- a/Documentation/ABI/testing/sysfs-fs-f2fs +++ b/Documentation/ABI/testing/sysfs-fs-f2fs @@ -18,3 +18,9 @@ Contact: "Namjae Jeon" <namjae.jeon@samsung.com> Description: Controls the default sleep time for gc_thread. Time is in milliseconds. + +What: /sys/fs/f2fs/<disk>/gc_idle +Date: July 2013 +Contact: "Namjae Jeon" <namjae.jeon@samsung.com> +Description: + Controls the victim selection policy for garbage collection. diff --git a/Documentation/filesystems/f2fs.txt b/Documentation/filesystems/f2fs.txt index 5daf3bb..3cd27be 100644 --- a/Documentation/filesystems/f2fs.txt +++ b/Documentation/filesystems/f2fs.txt @@ -158,6 +158,12 @@ Files in /sys/fs/f2fs/<devname> time for the garbage collection thread. Time is in milliseconds. + gc_idle This parameter controls the selection of victim + policy for garbage collection. Setting gc_idle = 0 + (default) will disable this option. Setting + gc_idle = 1 will select the Cost Benefit approach + & setting gc_idle = 2 will select the greedy aproach. + ================================================================================ USAGE ================================================================================ |