Commit 0e4de584 authored by Chris Mason's avatar Chris Mason
Browse files

Btrfs: Add check for null block group to find_search_start 



Signed-off-by: default avatarChris Mason <chris.mason@oracle.com>
parent 7073c8e8

fs/btrfs/extent-tree.c

+3 −0
Original line number Diff line number Diff line
@@ -204,6 +204,7 @@ static u64 find_search_start(struct btrfs_root *root, 
wrapped:

	cache = btrfs_lookup_block_group(root->fs_info, last);

	if (!cache) {

no_cache:

		if (!wrapped) {

			wrapped = 1;

			last = search_start;
@@ -219,6 +220,8 @@ static u64 find_search_start(struct btrfs_root *root, 
	}

	if (!full_scan)

		cache = btrfs_find_block_group(root, cache, last, data, 0);

	if (!cache)

		goto no_cache;

	*cache_ret = cache;

	cache_miss = 0;

	goto again;