From: Nikolay Borisov <nborisov@xxxxxxxx>
commit d3e29967079c522ce1c5cab0e9fab2c280b977eb upstream.
It's counter-intuitive (and wrong) to put the block group _before_ the
final usage in submit_eb_page. Fix it by re-ordering the call to
btrfs_put_block_group after its final reference. Also fix a minor typo
in 'implies'
Fixes: be1a1d7a5d24 ("btrfs: zoned: finish fully written block group")
CC: stable@xxxxxxxxxxxxxxx # 5.16+
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@xxxxxxx>
Signed-off-by: Nikolay Borisov <nborisov@xxxxxxxx>
Reviewed-by: David Sterba <dsterba@xxxxxxxx>
Signed-off-by: David Sterba <dsterba@xxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/btrfs/extent_io.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -4780,11 +4780,12 @@ static int submit_eb_page(struct page *p
return ret;
}
if (cache) {
- /* Impiles write in zoned mode */
- btrfs_put_block_group(cache);
- /* Mark the last eb in a block group */
+ /*
+ * Implies write in zoned mode. Mark the last eb in a block group.
+ */
if (cache->seq_zone && eb->start + eb->len == cache->zone_capacity)
set_bit(EXTENT_BUFFER_ZONE_FINISH, &eb->bflags);
+ btrfs_put_block_group(cache);
}
ret = write_one_eb(eb, wbc, epd);
free_extent_buffer(eb);
