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| author |   Johannes Thumshirn <johannes.thumshirn@wdc.com> | 2022-03-29 01:56:09 -0700 |
|---|---|---|
| committer |   David Sterba <dsterba@suse.com> | 2022-05-16 17:03:11 +0200 |
| commit | 3687fcb0752ac9c4630b4aeb5362c6e6f81c528e (patch) | |
| tree | e6b2116374c6bd3f4ac7ed096daf179ef297a374 /fs/btrfs/block-group.c | |
| parent | btrfs: change the bg_reclaim_threshold valid region from 0 to 100 (diff) | |
| download | linux-dev-3687fcb0752ac9c4630b4aeb5362c6e6f81c528e.tar.xz linux-dev-3687fcb0752ac9c4630b4aeb5362c6e6f81c528e.zip | |
btrfs: zoned: make auto-reclaim less aggressive
The current auto-reclaim algorithm starts reclaiming all block groups
with a zone_unusable value above a configured threshold. This is causing
a lot of reclaim IO even if there would be enough free zones on the
device.
Instead of only accounting a block groups zone_unusable value, also take
the ratio of free and not usable (written as well as zone_unusable)
bytes a device has into account.
Tested-by: Pankaj Raghav <p.raghav@samsung.com>
Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/block-group.c')
| -rw-r--r-- | fs/btrfs/block-group.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/fs/btrfs/block-group.c b/fs/btrfs/block-group.c index fb3ce80fd7e4..7bf10afab89c 100644 --- a/fs/btrfs/block-group.c +++ b/fs/btrfs/block-group.c @@ -1512,6 +1512,13 @@ static int reclaim_bgs_cmp(void *unused, const struct list_head *a, return bg1->used > bg2->used; } +static inline bool btrfs_should_reclaim(struct btrfs_fs_info *fs_info) +{ + if (btrfs_is_zoned(fs_info)) + return btrfs_zoned_should_reclaim(fs_info); + return true; +} + void btrfs_reclaim_bgs_work(struct work_struct *work) { struct btrfs_fs_info *fs_info = @@ -1522,6 +1529,9 @@ void btrfs_reclaim_bgs_work(struct work_struct *work) if (!test_bit(BTRFS_FS_OPEN, &fs_info->flags)) return; + if (!btrfs_should_reclaim(fs_info)) + return; + sb_start_write(fs_info->sb); if (!btrfs_exclop_start(fs_info, BTRFS_EXCLOP_BALANCE)) { |