[PATCH v2] mm/hugetlb: fix error code in hugetlbfs_alloc_inode

[Wanpeng Li <liwp.linux@gmail.com>]

From: Wanpeng Li <liwp@linux.vnet.ibm.com>

Changelog:
*v2 change -ENOMEM to ERR_PTR(-ENOMEM);

When kmem_cache_alloc fails alloc slab object from
hugetlbfs_inode_cachep, return -ENOMEM in usual. But
hugetlbfs_alloc_inode implementation has inconsitency
with it and returns NULL. Fix it to return -ENOMEM.

Signed-off-by: Wanpeng Li <liwp.linux@gmail.com>
---
 fs/hugetlbfs/inode.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c
index c4b85d0..79a0f33 100644
--- a/fs/hugetlbfs/inode.c
+++ b/fs/hugetlbfs/inode.c
@@ -696,7 +696,7 @@ static struct inode *hugetlbfs_alloc_inode(struct super_block *sb)
 	p = kmem_cache_alloc(hugetlbfs_inode_cachep, GFP_KERNEL);
 	if (unlikely(!p)) {
 		hugetlbfs_inc_free_inodes(sbinfo);
-		return NULL;
+		return ERR_PTR(-ENOMEM);
 	}
 	return &p->vfs_inode;
 }
-- 
1.7.5.4

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