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authorXiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>2012-10-08 16:29:42 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-10-09 16:22:26 +0900
commite060f0e0139b83f05bb90fa05563d14179b9a7ff (patch)
tree6da73af336dfc0f8456dbd3a55159aae32fe5c40 /mm
parent911891afe1c3104adf0f802189909868239ebbfd (diff)
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: 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>
Diffstat (limited to 'mm')
-rw-r--r--mm/huge_memory.c5
1 files changed, 1 insertions, 4 deletions
diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index 0931b2b19c5..46e3f150a6c 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -2333,11 +2333,8 @@ static int khugepaged(void *none)
set_freezable();
set_user_nice(current, 19);
- while (!kthread_should_stop()) {
- VM_BUG_ON(khugepaged_thread != current);
+ while (!kthread_should_stop())
khugepaged_loop();
- VM_BUG_ON(khugepaged_thread != current);
- }
spin_lock(&khugepaged_mm_lock);
mm_slot = khugepaged_scan.mm_slot;