From 7a079ba20090ab50d2f4203ceccd1e0f4becd1a6 Mon Sep 17 00:00:00 2001
From: Peter Xu <peterx@redhat.com>
Date: Wed, 15 Feb 2023 15:58:00 -0500
Subject: [PATCH] mm/uffd: fix comment in handling pte markers
The comment is obsolete after f369b07c8614 ("mm/uffd: reset write
protection when unregister with wp-mode", 2022-08-20). Remove it.
Link: https://lkml.kernel.org/r/20230215205800.223549-1-peterx@redhat.com
Signed-off-by: Peter Xu <peterx@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Axel Rasmussen <axelrasmussen@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
mm/memory.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/mm/memory.c b/mm/memory.c
index 7a04a1130ec15..f456f3b5049cf 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -3627,9 +3627,7 @@ static vm_fault_t pte_marker_handle_uffd_wp(struct vm_fault *vmf)
{
/*
* Just in case there're leftover special ptes even after the region
- * got unregistered - we can simply clear them. We can also do that
- * proactively when e.g. when we do UFFDIO_UNREGISTER upon some uffd-wp
- * ranges, but it should be more efficient to be done lazily here.
+ * got unregistered - we can simply clear them.
*/
if (unlikely(!userfaultfd_wp(vmf->vma) || vma_is_anonymous(vmf->vma)))
return pte_marker_clear(vmf);
--
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