diff options
| author | Johannes Thumshirn <johannes.thumshirn@wdc.com> | 2024-02-21 07:35:52 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-04-03 15:11:48 +0200 |
| commit | ddc278ed9e8f5e12d69df7bd4b7126cb82161519 (patch) | |
| tree | ff9244307cf2454d3416b6d150e73efb2cc892a7 | |
| parent | 3a25878a3378adce5d846300c9570f15aa7f7a80 (diff) | |
btrfs: zoned: don't skip block groups with 100% zone unusable
commit a8b70c7f8600bc77d03c0b032c0662259b9e615e upstream.
Commit f4a9f219411f ("btrfs: do not delete unused block group if it may be
used soon") changed the behaviour of deleting unused block-groups on zoned
filesystems. Starting with this commit, we're using
btrfs_space_info_used() to calculate the number of used bytes in a
space_info. But btrfs_space_info_used() also accounts
btrfs_space_info::bytes_zone_unusable as used bytes.
So if a block group is 100% zone_unusable it is skipped from the deletion
step.
In order not to skip fully zone_unusable block-groups, also check if the
block-group has bytes left that can be used on a zoned filesystem.
Fixes: f4a9f219411f ("btrfs: do not delete unused block group if it may be used soon")
CC: stable@vger.kernel.org # 6.1+
Reviewed-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | fs/btrfs/block-group.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/btrfs/block-group.c b/fs/btrfs/block-group.c index aca24186d66b..52bab8cf7867 100644 --- a/fs/btrfs/block-group.c +++ b/fs/btrfs/block-group.c @@ -1562,7 +1562,8 @@ void btrfs_delete_unused_bgs(struct btrfs_fs_info *fs_info) * needing to allocate extents from the block group. */ used = btrfs_space_info_used(space_info, true); - if (space_info->total_bytes - block_group->length < used) { + if (space_info->total_bytes - block_group->length < used && + block_group->zone_unusable < block_group->length) { /* * Add a reference for the list, compensate for the ref * drop under the "next" label for the |