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| author |   Daeho Jeong <daehojeong@google.com> | 2025-07-28 10:04:30 -0700 |
|---|---|---|
| committer |   Jaegeuk Kim <jaegeuk@kernel.org> | 2025-07-29 15:02:36 +0000 |
| commit | c8705cefce44fbe85ca3b180dee0e0b5f3d51dc5 (patch) | |
| tree | 76841c5ef89fe945713df8cceb5a9b7b011a9614 | |
| parent | f2fs: add gc_boost_gc_multiple sysfs node (diff) | |
| download | wireguard-linux-c8705cefce44fbe85ca3b180dee0e0b5f3d51dc5.tar.xz wireguard-linux-c8705cefce44fbe85ca3b180dee0e0b5f3d51dc5.zip | |
f2fs: add gc_boost_gc_greedy sysfs node
Add this to control GC algorithm for boost GC.
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/gc.c | 3 | ||||
| -rw-r--r-- | fs/f2fs/gc.h | 1 | ||||
| -rw-r--r-- | fs/f2fs/sysfs.c | 9 |
4 files changed, 18 insertions, 1 deletions
diff --git a/Documentation/ABI/testing/sysfs-fs-f2fs b/Documentation/ABI/testing/sysfs-fs-f2fs index b0026d42dbe8..bc0e7fefc39d 100644 --- a/Documentation/ABI/testing/sysfs-fs-f2fs +++ b/Documentation/ABI/testing/sysfs-fs-f2fs @@ -877,3 +877,9 @@ Contact: "Daeho Jeong" <daehojeong@google.com> Description: Set a multiplier for the background GC migration window when F2FS GC is boosted. The range should be from 1 to the segment count in a section. Default: 5 + +What: /sys/fs/f2fs/<disk>/gc_boost_gc_greedy +Date: June 2025 +Contact: "Daeho Jeong" <daehojeong@google.com> +Description: Control GC algorithm for boost GC. 0: cost benefit, 1: greedy + Default: 1 diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c index a9d606b11a3b..098e9f71421e 100644 --- a/fs/f2fs/gc.c +++ b/fs/f2fs/gc.c @@ -141,7 +141,7 @@ do_gc: FOREGROUND : BACKGROUND); sync_mode = (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_SYNC) || - gc_control.one_time; + (gc_control.one_time && gc_th->boost_gc_greedy); /* foreground GC was been triggered via f2fs_balance_fs() */ if (foreground && !f2fs_sb_has_blkzoned(sbi)) @@ -198,6 +198,7 @@ int f2fs_start_gc_thread(struct f2fs_sb_info *sbi) gc_th->urgent_sleep_time = DEF_GC_THREAD_URGENT_SLEEP_TIME; gc_th->valid_thresh_ratio = DEF_GC_THREAD_VALID_THRESH_RATIO; gc_th->boost_gc_multiple = BOOST_GC_MULTIPLE; + gc_th->boost_gc_greedy = GC_GREEDY; if (f2fs_sb_has_blkzoned(sbi)) { gc_th->min_sleep_time = DEF_GC_THREAD_MIN_SLEEP_TIME_ZONED; diff --git a/fs/f2fs/gc.h b/fs/f2fs/gc.h index d7573108bb68..24e8b1c27acc 100644 --- a/fs/f2fs/gc.h +++ b/fs/f2fs/gc.h @@ -69,6 +69,7 @@ struct f2fs_gc_kthread { unsigned int boost_zoned_gc_percent; unsigned int valid_thresh_ratio; unsigned int boost_gc_multiple; + unsigned int boost_gc_greedy; }; struct gc_inode_list { diff --git a/fs/f2fs/sysfs.c b/fs/f2fs/sysfs.c index d11e8af7306d..f736052dea50 100644 --- a/fs/f2fs/sysfs.c +++ b/fs/f2fs/sysfs.c @@ -859,6 +859,13 @@ out: return count; } + if (!strcmp(a->attr.name, "gc_boost_gc_greedy")) { + if (t > GC_GREEDY) + return -EINVAL; + sbi->gc_thread->boost_gc_greedy = (unsigned int)t; + return count; + } + *ui = (unsigned int)t; return count; @@ -1086,6 +1093,7 @@ GC_THREAD_RW_ATTR(gc_no_zoned_gc_percent, no_zoned_gc_percent); GC_THREAD_RW_ATTR(gc_boost_zoned_gc_percent, boost_zoned_gc_percent); GC_THREAD_RW_ATTR(gc_valid_thresh_ratio, valid_thresh_ratio); GC_THREAD_RW_ATTR(gc_boost_gc_multiple, boost_gc_multiple); +GC_THREAD_RW_ATTR(gc_boost_gc_greedy, boost_gc_greedy); /* SM_INFO ATTR */ SM_INFO_RW_ATTR(reclaim_segments, rec_prefree_segments); @@ -1258,6 +1266,7 @@ static struct attribute *f2fs_attrs[] = { ATTR_LIST(gc_boost_zoned_gc_percent), ATTR_LIST(gc_valid_thresh_ratio), ATTR_LIST(gc_boost_gc_multiple), + ATTR_LIST(gc_boost_gc_greedy), ATTR_LIST(gc_idle), ATTR_LIST(gc_urgent), ATTR_LIST(reclaim_segments), |