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| author | Yangtao Li <frank.li@vivo.com> | 2023-02-16 17:09:35 +0300 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2023-03-30 01:17:37 +0300 |
| commit | 960fa2c828a0af7a3b03b295e6aa17b2afeb5e07 (patch) | |
| tree | 2264e6c12566db76d7f003cbdbb7fd4562a7688a /Documentation/ABI | |
| parent | 60630375064f6f5124316dc372cdbed482a11f1e (diff) | |
| download | linux-960fa2c828a0af7a3b03b295e6aa17b2afeb5e07.tar.xz | |
f2fs: export compress_percent and compress_watermark entries
This patch export below sysfs entries for better control cached
compress page count.
/sys/fs/f2fs/<disk>/compress_watermark
/sys/fs/f2fs/<disk>/compress_percent
Signed-off-by: Yangtao Li <frank.li@vivo.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'Documentation/ABI')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-fs-f2fs | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-fs-f2fs b/Documentation/ABI/testing/sysfs-fs-f2fs index 94132745ecbe..c1314b7fe544 100644 --- a/Documentation/ABI/testing/sysfs-fs-f2fs +++ b/Documentation/ABI/testing/sysfs-fs-f2fs @@ -729,3 +729,20 @@ What: /sys/fs/f2fs/<disk>/last_age_weight Date: January 2023 Contact: "Ping Xiong" <xiongping1@xiaomi.com> Description: When DATA SEPARATION is on, it controls the weight of last data block age. + +What: /sys/fs/f2fs/<disk>/compress_watermark +Date: February 2023 +Contact: "Yangtao Li" <frank.li@vivo.com> +Description: When compress cache is on, it controls free memory watermark + in order to limit caching compress page. If free memory is lower + than watermark, then deny caching compress page. The value should be in + range of (0, 100], by default it was initialized as 20(%). + +What: /sys/fs/f2fs/<disk>/compress_percent +Date: February 2023 +Contact: "Yangtao Li" <frank.li@vivo.com> +Description: When compress cache is on, it controls cached page + percent(compress pages / free_ram) in order to limit caching compress page. + If cached page percent exceed threshold, then deny caching compress page. + The value should be in range of (0, 100], by default it was initialized + as 20(%). |