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| author | Jaegeuk Kim <jaegeuk@kernel.org> | 2020-04-02 18:32:35 +0200 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2020-04-16 23:41:52 +0200 |
| commit | da9953b729c12ece6d35fd15d236457eee679228 (patch) | |
| tree | 22e0d5fad2f8ce942171705537e3bf5185f8b802 /Documentation/ABI/testing/sysfs-fs-f2fs | |
| parent | Merge branch 'akpm' (patches from Andrew) (diff) | |
| download | linux-da9953b729c12ece6d35fd15d236457eee679228.tar.xz linux-da9953b729c12ece6d35fd15d236457eee679228.zip | |
f2fs: introduce sysfs/data_io_flag to attach REQ_META/FUA
This patch introduces a way to attach REQ_META/FUA explicitly
to all the data writes given temperature.
-> attach REQ_FUA to Hot Data writes
-> attach REQ_FUA to Hot|Warm Data writes
-> attach REQ_FUA to Hot|Warm|Cold Data writes
-> attach REQ_FUA to Hot|Warm|Cold Data writes as well as
REQ_META to Hot Data writes
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'Documentation/ABI/testing/sysfs-fs-f2fs')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-fs-f2fs | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-fs-f2fs b/Documentation/ABI/testing/sysfs-fs-f2fs index bd8a0d19abe6..c8620ea7022a 100644 --- a/Documentation/ABI/testing/sysfs-fs-f2fs +++ b/Documentation/ABI/testing/sysfs-fs-f2fs @@ -323,3 +323,12 @@ What: /sys/fs/f2fs/<disk>/mounted_time_sec Date: February 2020 Contact: "Jaegeuk Kim" <jaegeuk@kernel.org> Description: Show the mounted time in secs of this partition. + +What: /sys/fs/f2fs/<disk>/data_io_flag +Date: April 2020 +Contact: "Jaegeuk Kim" <jaegeuk@kernel.org> +Description: Give a way to attach REQ_META|FUA to data writes + given temperature-based bits. Now the bits indicate: + * REQ_META | REQ_FUA | + * 5 | 4 | 3 | 2 | 1 | 0 | + * Cold | Warm | Hot | Cold | Warm | Hot | |