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| author | Chao Yu <chao@kernel.org> | 2025-06-13 13:51:09 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-12-18 13:55:16 +0100 |
| commit | 4c5181b9e1a994b5df6de0815ef0a1cfb888a31b (patch) | |
| tree | a6158a31441dadab2913a4020cdcbd3ee2466087 /Documentation | |
| parent | d4a4abba458496d27fd54196597249c8cddfbb95 (diff) | |
| download | linux-4c5181b9e1a994b5df6de0815ef0a1cfb888a31b.tar.gz linux-4c5181b9e1a994b5df6de0815ef0a1cfb888a31b.tar.bz2 linux-4c5181b9e1a994b5df6de0815ef0a1cfb888a31b.zip | |
f2fs: introduce reserved_pin_section sysfs entry
[ Upstream commit 59c1c89e9ba8cefff05aa982dd9e6719f25e8ec5 ]
This patch introduces /sys/fs/f2fs/<dev>/reserved_pin_section for tuning
@needed parameter of has_not_enough_free_secs(), if we configure it w/
zero, it can avoid f2fs_gc() as much as possible while fallocating on
pinned file.
Signed-off-by: Chao Yu <chao@kernel.org>
Reviewed-by: wangzijie <wangzijie1@honor.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Stable-dep-of: e462fc48ceb8 ("f2fs: maintain one time GC mode is enabled during whole zoned GC cycle")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'Documentation')
| -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 87b32ca7f3a4..ade7da6352de 100644 --- a/Documentation/ABI/testing/sysfs-fs-f2fs +++ b/Documentation/ABI/testing/sysfs-fs-f2fs @@ -858,3 +858,12 @@ Description: This is a read-only entry to show the value of sb.s_encoding_flags, SB_ENC_STRICT_MODE_FL 0x00000001 SB_ENC_NO_COMPAT_FALLBACK_FL 0x00000002 ============================ ========== + +What: /sys/fs/f2fs/<disk>/reserved_pin_section +Date: June 2025 +Contact: "Chao Yu" <chao@kernel.org> +Description: This threshold is used to control triggering garbage collection while + fallocating on pinned file, so, it can guarantee there is enough free + reserved section before preallocating on pinned file. + By default, the value is ovp_sections, especially, for zoned ufs, the + value is 1. |