[PATCH 03/11] Btrfs: check the return value of io_ctl_init()

[Li Zefan]

It can return -ENOMEM.

Signed-off-by: Li Zefan <l...@cn.fujitsu.com>
---
 fs/btrfs/free-space-cache.c |    9 +++++++--
 1 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/fs/btrfs/free-space-cache.c b/fs/btrfs/free-space-cache.c
index 4e55af3..e4eb222 100644
--- a/fs/btrfs/free-space-cache.c
+++ b/fs/btrfs/free-space-cache.c
@@ -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))
-- 
1.7.3.1
--
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