thp: remove unnecessary check in start_khugepaged
The check is unnecessary since if mm_slot_cache or mm_slots_hash
initialize failed, no sysfs interface will be created
Signed-off-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index 860ea91..9833d8e 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -140,10 +140,7 @@
int err = 0;
if (khugepaged_enabled()) {
int wakeup;
- if (unlikely(!mm_slot_cache || !mm_slots_hash)) {
- err = -ENOMEM;
- goto out;
- }
+
mutex_lock(&khugepaged_mutex);
if (!khugepaged_thread)
khugepaged_thread = kthread_run(khugepaged, NULL,
@@ -163,7 +160,7 @@
} else
/* wakeup to exit */
wake_up_interruptible(&khugepaged_wait);
-out:
+
return err;
}