Commit d23ea3fa authored by David Sterba's avatar David Sterba
Browse files

btrfs: assert extent map tree lock in add_extent_mapping 



As add_extent_mapping is called from several functions, let's add the
lock annotation. The tree is going to be modified so it must be the
exclusive lock.

Reviewed-by: default avatarNikolay Borisov <nborisov@suse.com>
Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
parent 982f1f5d

fs/btrfs/extent_map.c

+2 −0
Original line number Diff line number Diff line
@@ -384,6 +384,8 @@ int add_extent_mapping(struct extent_map_tree *tree, 
{

	int ret = 0;



	lockdep_assert_held_write(&tree->lock);



	ret = tree_insert(&tree->map, em);

	if (ret)

		goto out;