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| author | Daeho Jeong <daehojeong@google.com> | 2024-09-09 15:19:42 -0700 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2024-09-11 03:32:57 +0000 |
| commit | 4cdca5a904b1c72a0ba6ac51a121351128c02fd8 (patch) | |
| tree | 77245d0389a991ad04b8dd576d184bcd0d1e0634 | |
| parent | 8c890c4c60342719526520133fb1b6f69f196ab8 (diff) | |
| download | lwn-4cdca5a904b1c72a0ba6ac51a121351128c02fd8.tar.gz lwn-4cdca5a904b1c72a0ba6ac51a121351128c02fd8.zip | |
f2fs: add reserved_segments sysfs node
For the fine tuning of GC behavior, add reserved_segments sysfs node.
Signed-off-by: Daeho Jeong <daehojeong@google.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
| -rw-r--r-- | Documentation/ABI/testing/sysfs-fs-f2fs | 6 | ||||
| -rw-r--r-- | fs/f2fs/sysfs.c | 2 |
2 files changed, 8 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-fs-f2fs b/Documentation/ABI/testing/sysfs-fs-f2fs index e6fa55037daf..6527a14082d2 100644 --- a/Documentation/ABI/testing/sysfs-fs-f2fs +++ b/Documentation/ABI/testing/sysfs-fs-f2fs @@ -791,3 +791,9 @@ Description: Controls migration window granularity of garbage collection on larg section. it can control the scanning window granularity for GC migration in a unit of segment, while migration_granularity controls the number of segments which can be migrated at the same turn. + +What: /sys/fs/f2fs/<disk>/reserved_segments +Date: September 2024 +Contact: "Daeho Jeong" <daehojeong@google.com> +Description: In order to fine tune GC behavior, we can control the number of + reserved segments. diff --git a/fs/f2fs/sysfs.c b/fs/f2fs/sysfs.c index 02b35edc9e1d..8eedba8ae710 100644 --- a/fs/f2fs/sysfs.c +++ b/fs/f2fs/sysfs.c @@ -986,6 +986,7 @@ SM_INFO_GENERAL_RW_ATTR(min_fsync_blocks); SM_INFO_GENERAL_RW_ATTR(min_seq_blocks); SM_INFO_GENERAL_RW_ATTR(min_hot_blocks); SM_INFO_GENERAL_RW_ATTR(min_ssr_sections); +SM_INFO_GENERAL_RW_ATTR(reserved_segments); /* DCC_INFO ATTR */ DCC_INFO_RW_ATTR(max_small_discards, max_discards); @@ -1158,6 +1159,7 @@ static struct attribute *f2fs_attrs[] = { ATTR_LIST(min_seq_blocks), ATTR_LIST(min_hot_blocks), ATTR_LIST(min_ssr_sections), + ATTR_LIST(reserved_segments), ATTR_LIST(max_victim_search), ATTR_LIST(migration_granularity), ATTR_LIST(migration_window_granularity), |