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>

1 files changed, 2 insertions, 5 deletions

diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index 860ea912785..9833d8ecf38 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -140,10 +140,7 @@ static int start_khugepaged(void)
         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 @@ static int start_khugepaged(void)
         } else
                 /* wakeup to exit */
                 wake_up_interruptible(&khugepaged_wait);
-out:
+
         return err;
 }