Btrfs: check return value of btrfs_alloc_path()

Adding the check on the return value of btrfs_alloc_path() to several places.
And, some of callers are modified by this change.

Signed-off-by: Tsutomu Itoh <t-itoh@jp.fujitsu.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>

1 files changed, 7 insertions, 4 deletions

diff --git a/fs/btrfs/compression.c b/fs/btrfs/compression.c
index 992a4b92083e..41d1d7c70e29 100644
--- a/fs/btrfs/compression.c
+++ b/fs/btrfs/compression.c
@@ -663,8 +663,9 @@ int btrfs_submit_compressed_read(struct inode *inode, struct bio *bio,
                         atomic_inc(&cb->pending_bios);
 
                         if (!(BTRFS_I(inode)->flags & BTRFS_INODE_NODATASUM)) {
-                                btrfs_lookup_bio_sums(root, inode, comp_bio,
-                                                      sums);
+                                ret = btrfs_lookup_bio_sums(root, inode,
+                                                        comp_bio, sums);
+                                BUG_ON(ret);
                         }
                         sums += (comp_bio->bi_size + root->sectorsize - 1) /
                                 root->sectorsize;
@@ -689,8 +690,10 @@ int btrfs_submit_compressed_read(struct inode *inode, struct bio *bio,
         ret = btrfs_bio_wq_end_io(root->fs_info, comp_bio, 0);
         BUG_ON(ret);
 
-        if (!(BTRFS_I(inode)->flags & BTRFS_INODE_NODATASUM))
-                btrfs_lookup_bio_sums(root, inode, comp_bio, sums);
+        if (!(BTRFS_I(inode)->flags & BTRFS_INODE_NODATASUM)) {
+                ret = btrfs_lookup_bio_sums(root, inode, comp_bio, sums);
+                BUG_ON(ret);
+        }
 
         ret = btrfs_map_bio(root, READ, comp_bio, mirror_num, 0);
         BUG_ON(ret);