Commit d23ea3fa authored Mar 27, 2019 by David Sterba

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: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: David 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;