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| author |   Daeho Jeong <daehojeong@google.com> | 2025-07-28 09:45:44 -0700 |
|---|---|---|
| committer |   Jaegeuk Kim <jaegeuk@kernel.org> | 2025-07-29 15:02:33 +0000 |
| commit | 1d4c5dbba1a53aeaf2c6cc84e7ba94c436d18852 (patch) | |
| tree | 717c080f58f1e8bbb859f59696a2ba326e45c7bc | |
| parent | f2fs: fix to trigger foreground gc during f2fs_map_blocks() in lfs mode (diff) | |
| download | wireguard-linux-1d4c5dbba1a53aeaf2c6cc84e7ba94c436d18852.tar.xz wireguard-linux-1d4c5dbba1a53aeaf2c6cc84e7ba94c436d18852.zip | |
f2fs: add gc_boost_gc_multiple sysfs node
Add a sysfs knob to set a multiplier for the background GC migration
window when F2FS Garbage Collection is boosted.
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 | 7 | ||||
| -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, 19 insertions, 1 deletions
diff --git a/Documentation/ABI/testing/sysfs-fs-f2fs b/Documentation/ABI/testing/sysfs-fs-f2fs index c2a233f2a085..b0026d42dbe8 100644 --- a/Documentation/ABI/testing/sysfs-fs-f2fs +++ b/Documentation/ABI/testing/sysfs-fs-f2fs @@ -870,3 +870,10 @@ Description: This threshold is used to control triggering garbage collection whi reserved section before preallocating on pinned file. By default, the value is ovp_sections, especially, for zoned ufs, the value is 1. + +What: /sys/fs/f2fs/<disk>/gc_boost_gc_multiple +Date: June 2025 +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 diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c index 18b9db2e98ba..a9d606b11a3b 100644 --- a/fs/f2fs/gc.c +++ b/fs/f2fs/gc.c @@ -197,6 +197,7 @@ 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; if (f2fs_sb_has_blkzoned(sbi)) { gc_th->min_sleep_time = DEF_GC_THREAD_MIN_SLEEP_TIME_ZONED; @@ -1750,7 +1751,7 @@ static int do_garbage_collect(struct f2fs_sb_info *sbi, !has_enough_free_blocks(sbi, sbi->gc_thread->boost_zoned_gc_percent)) window_granularity *= - BOOST_GC_MULTIPLE; + sbi->gc_thread->boost_gc_multiple; end_segno = start_segno + window_granularity; } diff --git a/fs/f2fs/gc.h b/fs/f2fs/gc.h index 11fba7636af7..d7573108bb68 100644 --- a/fs/f2fs/gc.h +++ b/fs/f2fs/gc.h @@ -68,6 +68,7 @@ struct f2fs_gc_kthread { unsigned int no_zoned_gc_percent; unsigned int boost_zoned_gc_percent; unsigned int valid_thresh_ratio; + unsigned int boost_gc_multiple; }; struct gc_inode_list { diff --git a/fs/f2fs/sysfs.c b/fs/f2fs/sysfs.c index bdef926b3377..d11e8af7306d 100644 --- a/fs/f2fs/sysfs.c +++ b/fs/f2fs/sysfs.c @@ -852,6 +852,13 @@ out: return count; } + if (!strcmp(a->attr.name, "gc_boost_gc_multiple")) { + if (t < 1 || t > SEGS_PER_SEC(sbi)) + return -EINVAL; + sbi->gc_thread->boost_gc_multiple = (unsigned int)t; + return count; + } + *ui = (unsigned int)t; return count; @@ -1078,6 +1085,7 @@ GC_THREAD_RW_ATTR(gc_no_gc_sleep_time, no_gc_sleep_time); 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); /* SM_INFO ATTR */ SM_INFO_RW_ATTR(reclaim_segments, rec_prefree_segments); @@ -1249,6 +1257,7 @@ static struct attribute *f2fs_attrs[] = { ATTR_LIST(gc_no_zoned_gc_percent), ATTR_LIST(gc_boost_zoned_gc_percent), ATTR_LIST(gc_valid_thresh_ratio), + ATTR_LIST(gc_boost_gc_multiple), ATTR_LIST(gc_idle), ATTR_LIST(gc_urgent), ATTR_LIST(reclaim_segments), |