[PATCH] futex: init error check
authorAkinobu Mita <akinobu.mita@gmail.com>
Thu, 7 Dec 2006 04:39:03 +0000 (20:39 -0800)
committerLinus Torvalds <torvalds@woody.osdl.org>
Thu, 7 Dec 2006 16:39:41 +0000 (08:39 -0800)
Check register_filesystem() and kern_mount() return values.

Cc: Ingo Molnar <mingo@redhat.com>
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
kernel/futex.c

index 7c0d0d4fa7f76cddfb098c4b68fa766b03f86c5f..d60b7f7a8cc3bdadaf4e8aab599a425261259767 100644 (file)
@@ -1857,10 +1857,16 @@ static struct file_system_type futex_fs_type = {
 
 static int __init init(void)
 {
-       unsigned int i;
+       int i = register_filesystem(&futex_fs_type);
+
+       if (i)
+               return i;
 
-       register_filesystem(&futex_fs_type);
        futex_mnt = kern_mount(&futex_fs_type);
+       if (IS_ERR(futex_mnt)) {
+               unregister_filesystem(&futex_fs_type);
+               return PTR_ERR(futex_mnt);
+       }
 
        for (i = 0; i < ARRAY_SIZE(futex_queues); i++) {
                INIT_LIST_HEAD(&futex_queues[i].chain);