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Btrfs: check the return value of io_ctl_init()

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It can return -ENOMEM.

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
This commit is contained in:
Li Zefan 2012-01-09 14:36:28 +08:00
parent a1ee5a4581
commit 706efc6630
1 changed files with 7 additions and 2 deletions
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9
fs/btrfs/free-space-cache.c
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@ -637,7 +637,10 @@ int __load_free_space_cache(struct btrfs_root *root, struct inode *inode,
if (!num_entries)
return 0;
io_ctl_init(&io_ctl, inode, root);
ret = io_ctl_init(&io_ctl, inode, root);
if (ret)
return ret;
ret = readahead_cache(inode);
if (ret)
goto out;
@ -851,7 +854,9 @@ int __btrfs_write_out_cache(struct btrfs_root *root, struct inode *inode,
if (!i_size_read(inode))
return -1;
io_ctl_init(&io_ctl, inode, root);
ret = io_ctl_init(&io_ctl, inode, root);
if (ret)
return -1;
/* Get the cluster for this block_group if it exists */
if (block_group && !list_empty(&block_group->cluster_list))