If there's no more free space in a bitmap, we should free it.
Reviewed-by: Josef Bacik <jo...@redhat.com>
Signed-off-by: Li Zefan <l...@cn.fujitsu.com>
---
fs/btrfs/free-space-cache.c | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/fs/btrfs/free-space-cache.c b/fs/btrfs/free-space-cache.c
index 850104f..cb0137e 100644
--- a/fs/btrfs/free-space-cache.c
+++ b/fs/btrfs/free-space-cache.c
@@ -1788,6 +1788,8 @@ static u64 btrfs_alloc_from_bitmap(struct
btrfs_block_group_cache *block_group,
ret = search_start;
bitmap_clear_bits(block_group, entry, ret, bytes);
+ if (entry->bytes == 0)
+ free_bitmap(block_group, entry);
out:
spin_unlock(&cluster->lock);
spin_unlock(&block_group->tree_lock);
--
1.6.3
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