The patch titled
Subject: thp: remove unnecessary khugepaged_thread check
has been added to the -mm tree. Its filename is
thp-remove-unnecessary-khugepaged_thread-check.patch
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------------------------------------------------------
From: Xiao Guangrong <xiaoguangrong@xxxxxxxxxxxxxxxxxx>
Subject: 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@xxxxxxxxxxxxxxxxxx>
Cc: Andrea Arcangeli <aarcange@xxxxxxxxxx>
Cc: Hugh Dickins <hughd@xxxxxxxxxx>
Cc: David Rientjes <rientjes@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/huge_memory.c | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)
diff -puN mm/huge_memory.c~thp-remove-unnecessary-khugepaged_thread-check mm/huge_memory.c
--- a/mm/huge_memory.c~thp-remove-unnecessary-khugepaged_thread-check
+++ a/mm/huge_memory.c
@@ -2334,11 +2334,8 @@ 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;
_
Patches currently in -mm which might be from xiaoguangrong@xxxxxxxxxxxxxxxxxx are
linux-next.patch
thp-fix-the-count-of-thp_collapse_alloc.patch
thp-remove-unnecessary-check-in-start_khugepaged.patch
thp-move-khugepaged_mutex-out-of-khugepaged.patch
thp-remove-unnecessary-khugepaged_thread-check.patch
thp-remove-wake_up_interruptible-in-the-exit-path.patch
thp-remove-some-code-depend-on-config_numa.patch
thp-merge-page-pre-alloc-in-khugepaged_loop-into-khugepaged_do_scan.patch
thp-release-page-in-page-pre-alloc-path.patch
thp-introduce-khugepaged_prealloc_page-and-khugepaged_alloc_page.patch
thp-remove-khugepaged_loop.patch
thp-use-khugepaged_enabled-to-remove-duplicate-code.patch
thp-remove-unnecessary-set_recommended_min_free_kbytes.patch
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