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authorChris Mason <chris.mason@oracle.com>2007-11-26 16:55:49 +0100
committerChris Mason <chris.mason@oracle.com>2008-09-25 17:03:58 +0200
commit0e4de58432f552c0ecead965b0fad8a9fb1d31ec (patch)
tree882ca940b11bc4303cfccb05e0dc3dc92f375de7 /fs/btrfs
parentBtrfs: Make sure page mapping dirty tag is properly cleared (diff)
downloadlinux-0e4de58432f552c0ecead965b0fad8a9fb1d31ec.tar.xz
linux-0e4de58432f552c0ecead965b0fad8a9fb1d31ec.zip
Btrfs: Add check for null block group to find_search_start
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs/btrfs')
-rw-r--r--fs/btrfs/extent-tree.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 6a7a9ba75fd9..39be6baccc36 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -204,6 +204,7 @@ new_group:
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 @@ wrapped:
}
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;