The patch titled
Subject: mm-swap-avoid-calling-swp_swap_info-when-try-to-check-swp_stable_writes-fix
has been added to the -mm mm-unstable branch. Its filename is
mm-swap-avoid-calling-swp_swap_info-when-try-to-check-swp_stable_writes-fix.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-swap-avoid-calling-swp_swap_info-when-try-to-check-swp_stable_writes-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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------------------------------------------------------
From: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Subject: mm-swap-avoid-calling-swp_swap_info-when-try-to-check-swp_stable_writes-fix
Date: Tue May 17 04:31:16 PM PDT 2022
use data_race() on si->flags, per Neil
Cc: Alistair Popple <apopple@xxxxxxxxxx>
Cc: David Hildenbrand <david@xxxxxxxxxx>
Cc: David Howells <dhowells@xxxxxxxxxx>
Cc: Matthew Wilcox <willy@xxxxxxxxxxxxx>
Cc: Miaohe Lin <linmiaohe@xxxxxxxxxx>
Cc: Naoya Horiguchi <naoya.horiguchi@xxxxxxx>
Cc: NeilBrown <neilb@xxxxxxx>
Cc: Peter Xu <peterx@xxxxxxxxxx>
Cc: Suren Baghdasaryan <surenb@xxxxxxxxxx>
Cc: Vlastimil Babka <vbabka@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/memory.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/mm/memory.c~mm-swap-avoid-calling-swp_swap_info-when-try-to-check-swp_stable_writes-fix
+++ a/mm/memory.c
@@ -3889,7 +3889,7 @@ vm_fault_t do_swap_page(struct vm_fault
*/
exclusive = true;
} else if (exclusive && PageWriteback(page) &&
- (si->flags & SWP_STABLE_WRITES)) {
+ data_race(si->flags & SWP_STABLE_WRITES)) {
/*
* This is tricky: not all swap backends support
* concurrent page modifications while under writeback.
_
Patches currently in -mm which might be from akpm@xxxxxxxxxxxxxxxxxxxx are
assoc_array-fix-bug_on-during-garbage-collect-fix.patch
mm-swap-avoid-calling-swp_swap_info-when-try-to-check-swp_stable_writes-fix.patch
mm-swap-add-helper-swap_offset_available-fix.patch
mm-swap-fix-the-comment-of-get_kernel_pages-fix.patch
mm-page_alloc-remotely-drain-per-cpu-lists-checkpatch-fixes.patch
tmpfs-fix-undefined-behaviour-in-shmem_reconfigure-fix.patch
linux-next-rejects.patch
linux-next-git-rejects.patch
mm-oom_killc-fix-vm_oom_kill_table-ifdeffery.patch
