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Subject[PATCH] futex: init error ckeck
This patch checks register_filesystem() and kern_mount() return
values.

Cc: Ingo Molnar <mingo@redhat.com>
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>

---
kernel/futex.c | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)

Index: work-fault-inject/kernel/futex.c
===================================================================
--- work-fault-inject.orig/kernel/futex.c
+++ work-fault-inject/kernel/futex.c
@@ -1857,10 +1857,16 @@ static struct file_system_type futex_fs_

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);
-
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