From: David Hildenbrand <david@redhat.com>
Date: Thu, 14 Apr 2022 06:07:00 +0000 (-0700)
Subject: mm-swap-remember-pg_anon_exclusive-via-a-swp-pte-bit-fix
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=20d64fbe6e1a9a328666cc534f6c83a0c6c202c0;p=users%2Fjedix%2Flinux-maple.git

mm-swap-remember-pg_anon_exclusive-via-a-swp-pte-bit-fix

Link: https://lkml.kernel.org/r/ac725bcb-313a-4fff-250a-68ba9a8f85fb@redhat.com

Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

diff --git a/mm/memory.c b/mm/memory.c
index 3ad39bd662034..6ad9d84dada09 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -3747,7 +3747,7 @@ vm_fault_t do_swap_page(struct vm_fault *vmf)
 			 */
 			exclusive = true;
 		} else if (exclusive && PageWriteback(page) &&
-			   !(swp_swap_info(entry)->flags & SWP_STABLE_WRITES)) {
+			  (swp_swap_info(entry)->flags & SWP_STABLE_WRITES)) {
 			/*
 			 * This is tricky: not all swap backends support
 			 * concurrent page modifications while under writeback.