The patch titled
Subject: mm-gup-introduce-memfd_pin_folios-for-pinning-memfd-folios-fix
has been added to the -mm mm-unstable branch. Its filename is
mm-gup-introduce-memfd_pin_folios-for-pinning-memfd-folios-fix.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-gup-introduce-memfd_pin_folios-for-pinning-memfd-folios-fix.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: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Subject: mm-gup-introduce-memfd_pin_folios-for-pinning-memfd-folios-fix
Date: Fri Jul 5 02:15:29 PM PDT 2024
improve the CONFIG_MMU=n situation, per SeongJae
Cc: SeongJae Park <sj@xxxxxxxxxx>
Cc: Vivek Kasireddy <vivek.kasireddy@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/gup.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
--- a/mm/gup.c~mm-gup-introduce-memfd_pin_folios-for-pinning-memfd-folios-fix
+++ a/mm/gup.c
@@ -3859,9 +3859,9 @@ long memfd_pin_folios(struct file *memfd
next_idx != folio_index(fbatch.folios[i]))
continue;
- folio = try_grab_folio_fast(&fbatch.folios[i]->page,
- 1, FOLL_PIN);
- if (!folio) {
+ folio = page_folio(&fbatch.folios[i]->page);
+
+ if (try_grab_folio(folio, 1, FOLL_PIN)) {
folio_batch_release(&fbatch);
ret = -EINVAL;
goto err;
_
Patches currently in -mm which might be from akpm@xxxxxxxxxxxxxxxxxxxx are
mm-gup-introduce-memfd_pin_folios-for-pinning-memfd-folios-fix.patch
mm-store-zero-pages-to-be-swapped-out-in-a-bitmap-v7-fix.patch
tools-mm-introduce-a-tool-to-assess-swap-entry-allocation-for-thp_swapout-fix.patch
