From 67e8072f11ea25b845029757e19fa41ee265a579 Mon Sep 17 00:00:00 2001 From: Naohiro Aota Date: Wed, 3 Mar 2021 17:55:48 +0900 Subject: [PATCH] btrfs: zoned: do not account freed region of read-only block group as zone_unusable We migrate zone unusable bytes to read-only bytes when a block group is set to read-only, and account all the free region as bytes_readonly. Thus, we should not increase block_group->zone_unusable when the block group is read-only. Fixes: f2399f44a57c ("btrfs: zoned: track unusable bytes for zones") Reviewed-by: Johannes Thumshirn Signed-off-by: Naohiro Aota Signed-off-by: David Sterba --- fs/btrfs/free-space-cache.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/fs/btrfs/free-space-cache.c b/fs/btrfs/free-space-cache.c index 711a6a751ae99..9988decd5717b 100644 --- a/fs/btrfs/free-space-cache.c +++ b/fs/btrfs/free-space-cache.c @@ -2555,7 +2555,12 @@ static int __btrfs_add_free_space_zoned(struct btrfs_block_group *block_group, to_unusable = size - to_free; ctl->free_space += to_free; - block_group->zone_unusable += to_unusable; + /* + * If the block group is read-only, we should account freed space into + * bytes_readonly. + */ + if (!block_group->ro) + block_group->zone_unusable += to_unusable; spin_unlock(&ctl->tree_lock); if (!used) { spin_lock(&block_group->lock); -- 2.39.5