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Diffstat (limited to 'fs/btrfs/extent-tree.c')
-rw-r--r--fs/btrfs/extent-tree.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index f3e93ba7ec97..4ceffbef3298 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -2897,7 +2897,15 @@ int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans)
block_group->length,
&trimmed);
+ /*
+ * Not strictly necessary to lock, as the block_group should be
+ * read-only from btrfs_delete_unused_bgs().
+ */
+ ASSERT(block_group->ro);
+ spin_lock(&fs_info->unused_bgs_lock);
list_del_init(&block_group->bg_list);
+ spin_unlock(&fs_info->unused_bgs_lock);
+
btrfs_unfreeze_block_group(block_group);
btrfs_put_block_group(block_group);