hugetlbfs: return error code when initializing module

Return an errno upon failure to create inode kmem cache, and unregister
the FS upon failure to mount.

[akpm@linux-foundation.org: remove unneeded test of `error']
Signed-off-by: Hillf Danton <dhillf@gmail.com>
Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 3 insertions, 2 deletions

diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c
index 631329f3de63..269163324b73 100644
--- a/fs/hugetlbfs/inode.c
+++ b/fs/hugetlbfs/inode.c
@@ -1021,6 +1021,7 @@ static int __init init_hugetlbfs_fs(void)
         if (error)
                 return error;
 
+        error = -ENOMEM;
         hugetlbfs_inode_cachep = kmem_cache_create("hugetlbfs_inode_cache",
                                         sizeof(struct hugetlbfs_inode_info),
                                         0, 0, init_once);
@@ -1039,10 +1040,10 @@ static int __init init_hugetlbfs_fs(void)
         }
 
         error = PTR_ERR(vfsmount);
+        unregister_filesystem(&hugetlbfs_fs_type);
 
  out:
-        if (error)
-                kmem_cache_destroy(hugetlbfs_inode_cachep);
+        kmem_cache_destroy(hugetlbfs_inode_cachep);
  out2:
         bdi_destroy(&hugetlbfs_backing_dev_info);
         return error;