[PATCH] Error checks omitted in init_tmpfs() in mm/tiny-shmem.c

From: Hareesh Nagarajan <hnagar2@gmail.com>
Signed-off-by: NHareesh Nagarajan <hnagar2@gmail.com>
Acked-by: NMatt Mackall <mpm@selenic.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

mm/tiny-shmem.c

@@ -31,11 +31,14 @@ static struct vfsmount *shm_mnt;
 
 static int __init init_tmpfs(void)
 {
-	register_filesystem(&tmpfs_fs_type);
+	BUG_ON(register_filesystem(&tmpfs_fs_type) != 0);
+
 #ifdef CONFIG_TMPFS
 	devfs_mk_dir("shm");
 #endif
 	shm_mnt = kern_mount(&tmpfs_fs_type);
+	BUG_ON(IS_ERR(shm_mnt));
+
 	return 0;
 }
 module_init(init_tmpfs)