In __btrfs_alloc_chunk(), if calc_per_profile_avail() failed, it will
not update the per-profile available space array.
However since device used space is already updated, this would cause a
mismatch between them.
To fix this problem, this patch will revert device used bytes when
calc_per_profile_avail() failed, and remove the newly allocated chunk.
Signed-off-by: Qu Wenruo <wqu@xxxxxxxx>
---
fs/btrfs/volumes.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index b09d1fbd8e2d..b929b0bff2a3 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -5226,6 +5226,15 @@ static int __btrfs_alloc_chunk(struct btrfs_trans_handle *trans,
&trans->transaction->dev_update_list);
}
ret = calc_per_profile_avail(info);
+ if (ret < 0) {
+ for (i = 0; i < map->num_stripes; i++) {
+ struct btrfs_device *dev = map->stripes[i].dev;
+
+ btrfs_device_set_bytes_used(dev,
+ dev->bytes_used - stripe_size);
+ }
+ goto error_del_extent;
+ }
atomic64_sub(stripe_size * map->num_stripes, &info->free_chunk_space);
--
2.25.1
