Commit e060f0e0 authored by Xiao Guangrong's avatar Xiao Guangrong Committed by Linus Torvalds

thp: remove unnecessary khugepaged_thread check

Now, khugepaged creation and cancel are completely serial under the
protection of khugepaged_mutex, it is impossible that many khugepaged
entities are running
Signed-off-by: default avatarXiao 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: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 911891af
...@@ -2333,11 +2333,8 @@ static int khugepaged(void *none) ...@@ -2333,11 +2333,8 @@ static int khugepaged(void *none)
set_freezable(); set_freezable();
set_user_nice(current, 19); set_user_nice(current, 19);
while (!kthread_should_stop()) { while (!kthread_should_stop())
VM_BUG_ON(khugepaged_thread != current);
khugepaged_loop(); khugepaged_loop();
VM_BUG_ON(khugepaged_thread != current);
}
spin_lock(&khugepaged_mm_lock); spin_lock(&khugepaged_mm_lock);
mm_slot = khugepaged_scan.mm_slot; mm_slot = khugepaged_scan.mm_slot;
......
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