The patch titled
Subject: mm: oom: let oom_reap_task and exit_mmap run concurrently, add unlikely
has been added to the -mm tree. Its filename is
mm-oom-let-oom_reap_task-and-exit_mmap-to-run-concurrently-fix-3.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-oom-let-oom_reap_task-and-exit_mmap-to-run-concurrently-fix-3.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-oom-let-oom_reap_task-and-exit_mmap-to-run-concurrently-fix-3.patch
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------------------------------------------------------
From: Andrea Arcangeli <aarcange@xxxxxxxxxx>
Subject: mm: oom: let oom_reap_task and exit_mmap run concurrently, add unlikely
Microoptimization to fold before merging.
Link: http://lkml.kernel.org/r/20170817171240.GB5066@xxxxxxxxxx
Signed-off-by: Andrea Arcangeli <aarcange@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/mmap.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -puN mm/mmap.c~mm-oom-let-oom_reap_task-and-exit_mmap-to-run-concurrently-fix-3 mm/mmap.c
--- a/mm/mmap.c~mm-oom-let-oom_reap_task-and-exit_mmap-to-run-concurrently-fix-3
+++ a/mm/mmap.c
@@ -3003,7 +3003,7 @@ void exit_mmap(struct mm_struct *mm)
unmap_vmas(&tlb, vma, 0, -1);
set_bit(MMF_OOM_SKIP, &mm->flags);
- if (tsk_is_oom_victim(current)) {
+ if (unlikely(tsk_is_oom_victim(current))) {
/*
* Wait for oom_reap_task() to stop working on this
* mm. Because MMF_OOM_SKIP is already set before
_
Patches currently in -mm which might be from aarcange@xxxxxxxxxx are
userfaultfd-selftest-exercise-uffdio_copy-zeropage-eexist.patch
userfaultfd-selftest-explicit-failure-if-the-sigbus-test-failed.patch
userfaultfd-call-userfaultfd_unmap_prep-only-if-__split_vma-succeeds.patch
userfaultfd-provide-pid-in-userfault-msg-add-feat-union.patch
mm-oom-let-oom_reap_task-and-exit_mmap-to-run-concurrently.patch
mm-oom-let-oom_reap_task-and-exit_mmap-to-run-concurrently-fix.patch
mm-oom-let-oom_reap_task-and-exit_mmap-to-run-concurrently-fix-3.patch
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