[merged mm-stable] mm-gup-move-pmd_protnone-into-gup_fast_pmd_leaf.patch removed from -mm tree

[merged mm-stable] mm-gup-move-pmd_protnone-into-gup_fast_pmd_leaf.patch removed from -mm tree

[Andrew Morton]

The quilt patch titled
     Subject: mm: gup: move pmd_protnone() into gup_fast_pmd_leaf()
has been removed from the -mm tree.  Its filename was
     mm-gup-move-pmd_protnone-into-gup_fast_pmd_leaf.patch

This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

------------------------------------------------------
From: Aristeu Rozanski <aris@ruivo.org>
Subject: mm: gup: move pmd_protnone() into gup_fast_pmd_leaf()
Date: Thu, 27 Aug 2026 21:55:43 -0400

Patch series "mm: gup: cleanup gup_fast call chain", v3.

These two patches implement the refactor in gup_fast call chain David
Hildenbrand mentioned in [1].


This patch (of 2):	

Make pmd handling match pud handling by calling pmd_protnone() inside
gup_fast_pmd_leaf().

Link: https://lore.kernel.org/20260828015542.125576330@ruivo.org
Link: https://lore.kernel.org/20260828015542.245315718@ruivo.org
Link: https://lore.kernel.org/all/85e760cf-b994-40db-8d13-221feee55c60@redhat.com/T/#u [1]
Signed-off-by: Aristeu Rozanski <aris@ruivo.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Suggested-by: David Hildenbrand <david@kernel.org>
Link: https://lore.kernel.org/all/85e760cf-b994-40db-8d13-221feee55c60@redhat.com/T/#u
Acked-by: David Hildenbrand (Arm) <david@kernel.org>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Peter Xu <peterx@redhat.com>
---

 mm/gup.c |    8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

--- a/mm/gup.c~mm-gup-move-pmd_protnone-into-gup_fast_pmd_leaf
+++ a/mm/gup.c
@@ -2929,6 +2929,10 @@ static int gup_fast_pmd_leaf(pmd_t orig,
 	struct folio *folio;
 	int refs;
 
+	/* See gup_fast_pte_range() */
+	if (pmd_protnone(orig))
+		return 0;
+
 	if (!pmd_access_permitted(orig, flags & FOLL_WRITE))
 		return 0;
 
@@ -3024,10 +3028,6 @@ static int gup_fast_pmd_range(pud_t *pud
 			return 0;
 
 		if (unlikely(pmd_leaf(pmd))) {
-			/* See gup_fast_pte_range() */
-			if (pmd_protnone(pmd))
-				return 0;
-
 			if (!gup_fast_pmd_leaf(pmd, pmdp, addr, next, flags,
 				pages, nr))
 				return 0;
_

Patches currently in -mm which might be from aris@ruivo.org are