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authorYangtao Li <frank.li@vivo.com>2023-02-16 17:09:35 +0300
committerJaegeuk Kim <jaegeuk@kernel.org>2023-03-30 01:17:37 +0300
commit960fa2c828a0af7a3b03b295e6aa17b2afeb5e07 (patch)
tree2264e6c12566db76d7f003cbdbb7fd4562a7688a /Documentation/ABI
parent60630375064f6f5124316dc372cdbed482a11f1e (diff)
downloadlinux-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-f2fs17
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(%).