summaryrefslogtreecommitdiff
path: root/fs/btrfs/extent-tree.c
diff options
context:
space:
mode:
authorTsutomu Itoh <t-itoh@jp.fujitsu.com>2011-03-24 06:33:21 +0000
committerroot <Chris Mason chris.mason@oracle.com>2011-03-28 05:37:37 -0400
commit97d9a8a420444eb5b5c071d4b3b9c4100a7ae015 (patch)
tree4ed3e77541ebcc4885c4a10630e2f6bf94d3cef2 /fs/btrfs/extent-tree.c
parent7e75bf3ff3a716d7b21d8fb43bf823115801c1e9 (diff)
Btrfs: check return value of read_tree_block()
This patch is checking return value of read_tree_block(), and if it is NULL, error processing. Signed-off-by: Tsutomu Itoh <t-itoh@jp.fujitsu.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs/btrfs/extent-tree.c')
-rw-r--r--fs/btrfs/extent-tree.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index a6a8159c5d1e..5bc658a9d85c 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -6067,6 +6067,8 @@ static noinline int do_walk_down(struct btrfs_trans_handle *trans,
if (reada && level == 1)
reada_walk_down(trans, root, wc, path);
next = read_tree_block(root, bytenr, blocksize, generation);
+ if (!next)
+ return -EIO;
btrfs_tree_lock(next);
btrfs_set_lock_blocking(next);
}
@@ -7937,6 +7939,10 @@ static noinline int relocate_one_extent(struct btrfs_root *extent_root,
eb = read_tree_block(found_root, block_start,
block_size, 0);
+ if (!eb) {
+ ret = -EIO;
+ goto out;
+ }
btrfs_tree_lock(eb);
BUG_ON(level != btrfs_header_level(eb));