The patch titled
Subject: gup: convert FOLL_TOUCH case in follow_page_pte() to folio
has been added to the -mm mm-unstable branch. Its filename is
gup-convert-foll_touch-case-in-follow_page_pte-to-folio.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/gup-convert-foll_touch-case-in-follow_page_pte-to-folio.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: "Matthew Wilcox (Oracle)" <willy@xxxxxxxxxxxxx>
Subject: gup: convert FOLL_TOUCH case in follow_page_pte() to folio
Date: Wed, 2 Oct 2024 16:13:27 +0100
We already have the folio here, so just use it, removing three hidden
calls to compound_head().
Link: https://lkml.kernel.org/r/20241002151403.1345296-1-willy@xxxxxxxxxxxxx
Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/gup.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
--- a/mm/gup.c~gup-convert-foll_touch-case-in-follow_page_pte-to-folio
+++ a/mm/gup.c
@@ -922,14 +922,14 @@ static struct page *follow_page_pte(stru
}
if (flags & FOLL_TOUCH) {
if ((flags & FOLL_WRITE) &&
- !pte_dirty(pte) && !PageDirty(page))
- set_page_dirty(page);
+ !pte_dirty(pte) && !folio_test_dirty(folio))
+ folio_mark_dirty(folio);
/*
* pte_mkyoung() would be more correct here, but atomic care
* is needed to avoid losing the dirty bit: it is easier to use
- * mark_page_accessed().
+ * folio_mark_accessed().
*/
- mark_page_accessed(page);
+ folio_mark_accessed(folio);
}
out:
pte_unmap_unlock(ptep, ptl);
_
Patches currently in -mm which might be from willy@xxxxxxxxxxxxx are
ksm-use-a-folio-in-try_to_merge_one_page.patch
ksm-convert-cmp_and_merge_page-to-use-a-folio.patch
ksm-convert-should_skip_rmap_item-to-take-a-folio.patch
mm-add-pageanonnotksm.patch
mm-remove-pageksm.patch
gup-convert-foll_touch-case-in-follow_page_pte-to-folio.patch
