diff options
Diffstat (limited to 'fs/btrfs/block-group.c')
| -rw-r--r-- | fs/btrfs/block-group.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/fs/btrfs/block-group.c b/fs/btrfs/block-group.c index 1a66be33bb..60066822b5 100644 --- a/fs/btrfs/block-group.c +++ b/fs/btrfs/block-group.c @@ -1924,8 +1924,17 @@ void btrfs_reclaim_bgs_work(struct work_struct *work) next: if (ret) { /* Refcount held by the reclaim_bgs list after splice. */ - btrfs_get_block_group(bg); - list_add_tail(&bg->bg_list, &retry_list); + spin_lock(&fs_info->unused_bgs_lock); + /* + * This block group might be added to the unused list + * during the above process. Move it back to the + * reclaim list otherwise. + */ + if (list_empty(&bg->bg_list)) { + btrfs_get_block_group(bg); + list_add_tail(&bg->bg_list, &retry_list); + } + spin_unlock(&fs_info->unused_bgs_lock); } btrfs_put_block_group(bg); |