[PATCH] hugetlbfs: add err code in initializing module

[Hillf Danton]

Error code is added if fail to create inode kmem cache, and newly registered
hugetlb FS is unregistered if fail to mount, both for unlikely corner cases.

--- a/fs/hugetlbfs/inode.c	Sun Mar 11 12:46:38 2012
+++ b/fs/hugetlbfs/inode.c	Sun Mar 11 12:49:28 2012
@@ -1000,6 +1000,7 @@ static int __init init_hugetlbfs_fs(void
 	hugetlbfs_inode_cachep = kmem_cache_create("hugetlbfs_inode_cache",
 					sizeof(struct hugetlbfs_inode_info),
 					0, 0, init_once);
+	error = -ENOMEM;
 	if (hugetlbfs_inode_cachep == NULL)
 		goto out2;

@@ -1015,6 +1016,7 @@ static int __init init_hugetlbfs_fs(void
 	}

 	error = PTR_ERR(vfsmount);
+	unregister_filesystem(&hugetlbfs_fs_type);

  out:
 	if (error)
--
--
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