[merged mm-stable] gup-use-folios-for-gup_devmap.patch removed from -mm tree

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

The quilt patch titled
     Subject: gup: use folios for gup_devmap
has been removed from the -mm tree.  Its filename was
     gup-use-folios-for-gup_devmap.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: "Matthew Wilcox (Oracle)" <willy@infradead.org>
Subject: gup: use folios for gup_devmap
Date: Wed, 24 Apr 2024 20:19:10 +0100

Use try_grab_folio() instead of try_grab_page() so we get the folio back
that we calculated, and then use folio_set_referenced() instead of
SetPageReferenced().  Correspondingly, use gup_put_folio() to put any
unneeded references.

Link: https://lkml.kernel.org/r/20240424191914.361554-6-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/gup.c |   17 ++++++++---------
 1 file changed, 8 insertions(+), 9 deletions(-)

--- a/mm/gup.c~gup-use-folios-for-gup_devmap
+++ a/mm/gup.c
@@ -2877,13 +2877,10 @@ static void __maybe_unused gup_fast_undo
 		unsigned int flags, struct page **pages)
 {
 	while ((*nr) - nr_start) {
-		struct page *page = pages[--(*nr)];
+		struct folio *folio = page_folio(pages[--(*nr)]);
 
-		ClearPageReferenced(page);
-		if (flags & FOLL_PIN)
-			unpin_user_page(page);
-		else
-			put_page(page);
+		folio_clear_referenced(folio);
+		gup_put_folio(folio, 1, flags);
 	}
 }
 
@@ -3024,6 +3021,7 @@ static int gup_fast_devmap_leaf(unsigned
 	struct dev_pagemap *pgmap = NULL;
 
 	do {
+		struct folio *folio;
 		struct page *page = pfn_to_page(pfn);
 
 		pgmap = get_dev_pagemap(pfn, pgmap);
@@ -3037,12 +3035,13 @@ static int gup_fast_devmap_leaf(unsigned
 			break;
 		}
 
-		SetPageReferenced(page);
-		pages[*nr] = page;
-		if (unlikely(try_grab_page(page, flags))) {
+		folio = try_grab_folio(page, 1, flags);
+		if (!folio) {
 			gup_fast_undo_dev_pagemap(nr, nr_start, flags, pages);
 			break;
 		}
+		folio_set_referenced(folio);
+		pages[*nr] = page;
 		(*nr)++;
 		pfn++;
 	} while (addr += PAGE_SIZE, addr != end);
_

Patches currently in -mm which might be from willy@infradead.org are

squashfs-convert-squashfs_symlink_read_folio-to-use-folio-apis.patch
squashfs-remove-calls-to-set-the-folio-error-flag.patch
nilfs2-remove-calls-to-folio_set_error-and-folio_clear_error.patch