+ mm-page_alloc-protect-pcp-lists-with-a-spinlock-fix.patch added to mm-unstable branch

[Andrew Morton <akpm@linux-foundation.org>]

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

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*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***

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------------------------------------------------------
From: Andrew Morton <akpm@linux-foundation.org>
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@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Nicolas Saenz Julienne <nsaenzju@redhat.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Yu Zhao <yuzhao@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 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@linux-foundation.org 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