From: Yangtao Li via Linux-f2fs-devel <linux-f2fs-devel@lists.sourceforge.net>
To: jaegeuk@kernel.org, chao@kernel.org
Cc: Yangtao Li <frank.li@vivo.com>,
linux-kernel@vger.kernel.org,
linux-f2fs-devel@lists.sourceforge.net
Subject: [f2fs-dev] [PATCH v2] f2fs: export compress_percent and compress_watermark entries
Date: Fri, 20 Jan 2023 23:15:39 +0800 [thread overview]
Message-ID: <20230120151539.62660-1-frank.li@vivo.com> (raw)
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>
---
v2: disallow to set 0
Documentation/ABI/testing/sysfs-fs-f2fs | 17 +++++++++++++++++
fs/f2fs/sysfs.c | 18 ++++++++++++++++++
2 files changed, 35 insertions(+)
diff --git a/Documentation/ABI/testing/sysfs-fs-f2fs b/Documentation/ABI/testing/sysfs-fs-f2fs
index 0f17adc80488..e8b1c5b8c370 100644
--- a/Documentation/ABI/testing/sysfs-fs-f2fs
+++ b/Documentation/ABI/testing/sysfs-fs-f2fs
@@ -722,3 +722,20 @@ 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: January 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: January 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(%).
diff --git a/fs/f2fs/sysfs.c b/fs/f2fs/sysfs.c
index bdc761f36310..69330a9709c9 100644
--- a/fs/f2fs/sysfs.c
+++ b/fs/f2fs/sysfs.c
@@ -598,6 +598,20 @@ static ssize_t __sbi_store(struct f2fs_attr *a,
sbi->compr_new_inode = 0;
return count;
}
+
+ if (!strcmp(a->attr.name, "compress_percent")) {
+ if (t == 0 || t > 100)
+ return -EINVAL;
+ *ui = t;
+ return count;
+ }
+
+ if (!strcmp(a->attr.name, "compress_watermark")) {
+ if (t == 0 || t > 100)
+ return -EINVAL;
+ *ui = t;
+ return count;
+ }
#endif
if (!strcmp(a->attr.name, "atgc_candidate_ratio")) {
@@ -941,6 +955,8 @@ F2FS_FEATURE_RO_ATTR(compression);
F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, compr_written_block, compr_written_block);
F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, compr_saved_block, compr_saved_block);
F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, compr_new_inode, compr_new_inode);
+F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, compress_percent, compress_percent);
+F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, compress_watermark, compress_watermark);
#endif
F2FS_FEATURE_RO_ATTR(pin_file);
@@ -1048,6 +1064,8 @@ static struct attribute *f2fs_attrs[] = {
ATTR_LIST(compr_written_block),
ATTR_LIST(compr_saved_block),
ATTR_LIST(compr_new_inode),
+ ATTR_LIST(compress_percent),
+ ATTR_LIST(compress_watermark),
#endif
/* For ATGC */
ATTR_LIST(atgc_candidate_ratio),
--
2.25.1
_______________________________________________
Linux-f2fs-devel mailing list
Linux-f2fs-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel
reply other threads:[~2023-01-20 15:16 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20230120151539.62660-1-frank.li@vivo.com \
--to=linux-f2fs-devel@lists.sourceforge.net \
--cc=chao@kernel.org \
--cc=frank.li@vivo.com \
--cc=jaegeuk@kernel.org \
--cc=linux-kernel@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).