From: Naohiro Aota Date: Wed, 3 Mar 2021 08:55:48 +0000 (+0900) Subject: btrfs: zoned: do not account freed region of read-only block group as zone_unusable X-Git-Tag: v5.12-rc2~10^2 X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=badae9c86979c459bd7d895d6d7ddc7a01131ff7;p=linux-platform-drivers-x86.git 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: 169e0da91a21 ("btrfs: zoned: track unusable bytes for zones") Reviewed-by: Johannes Thumshirn Signed-off-by: Naohiro Aota Signed-off-by: David Sterba --- diff --git a/fs/btrfs/free-space-cache.c b/fs/btrfs/free-space-cache.c index 711a6a751ae9..9988decd5717 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);