The patch titled
Subject: mm-page_alloc-protect-pcp-lists-with-a-spinlock-fix
has been added to the -mm mm-unstable branch. Its filename is
mm-page_alloc-protect-pcp-lists-with-a-spinlock-fix.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-page_alloc-protect-pcp-lists-with-a-spinlock-fix.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
The -mm tree is included into linux-next via the mm-everything
branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
and is updated there every 2-3 working days
------------------------------------------------------
From: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Subject: mm-page_alloc-protect-pcp-lists-with-a-spinlock-fix
Date: Thu Jul 7 01:06:35 PM PDT 2022
add missing local_unlock_irqrestore() on contention path
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Reported-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Cc: Hugh Dickins <hughd@xxxxxxxxxx>
Cc: Marcelo Tosatti <mtosatti@xxxxxxxxxx>
Cc: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>
Cc: Mel Gorman <mgorman@xxxxxxxxxxxxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxxxx>
Cc: Minchan Kim <minchan@xxxxxxxxxx>
Cc: Nicolas Saenz Julienne <nsaenzju@xxxxxxxxxx>
Cc: Vlastimil Babka <vbabka@xxxxxxx>
Cc: Yu Zhao <yuzhao@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/page_alloc.c | 1 +
1 file changed, 1 insertion(+)
--- a/mm/page_alloc.c~mm-page_alloc-protect-pcp-lists-with-a-spinlock-fix
+++ a/mm/page_alloc.c
@@ -3792,6 +3792,7 @@ static struct page *rmqueue_pcplist(stru
pcp_trylock_prepare(UP_flags);
if (!spin_trylock(&pcp->lock)) {
pcp_trylock_finish(UP_flags);
+ local_unlock_irqrestore(&pagesets.lock, flags);
return NULL;
}
_
Patches currently in -mm which might be from akpm@xxxxxxxxxxxxxxxxxxxx are
android-binder-stop-saving-a-pointer-to-the-vma-fix.patch
mm-remove-the-vma-linked-list-fix-2-fix.patch
mm-drop-oom-code-from-exit_mmap-fix-fix.patch
mm-add-merging-after-mremap-resize-checkpatch-fixes.patch
mm-factor-helpers-for-memory_failure_dev_pagemap-fix.patch
xfs-support-cow-in-fsdax-mode-fix.patch
mm-thp-kill-transparent_hugepage_active-fix.patch
mm-thp-kill-transparent_hugepage_active-fix-fix.patch
mm-page_alloc-protect-pcp-lists-with-a-spinlock-fix.patch
x86-mm-move-protection_map-inside-the-platform-fix.patch
