The patch titled
Subject: mm-gup-avoid-an-unnecessary-allocation-call-for-foll_longterm-cases-fix-2
has been added to the -mm mm-hotfixes-unstable branch. Its filename is
mm-gup-avoid-an-unnecessary-allocation-call-for-foll_longterm-cases-fix-2.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-gup-avoid-an-unnecessary-allocation-call-for-foll_longterm-cases-fix-2.patch
This patch will later appear in the mm-hotfixes-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: John Hubbard <jhubbard@xxxxxxxxxx>
Subject: mm-gup-avoid-an-unnecessary-allocation-call-for-foll_longterm-cases-fix-2
Date: Wed, 6 Nov 2024 20:20:05 -0800
bypass pofs_get_folio(), per Oscar
Link: https://lkml.kernel.org/r/c1587c7f-9155-45be-bd62-1e36c0dd6923@xxxxxxxxxx
Signed-off-by: John Hubbard <jhubbard@xxxxxxxxxx>
Cc: Arnd Bergmann <arnd@xxxxxxxx>
Cc: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Cc: Daniel Vetter <daniel.vetter@xxxxxxxx>
Cc: Dave Airlie <airlied@xxxxxxxxxx>
Cc: David Hildenbrand <david@xxxxxxxxxx>
Cc: Dongwon Kim <dongwon.kim@xxxxxxxxx>
Cc: Gerd Hoffmann <kraxel@xxxxxxxxxx>
Cc: Hugh Dickins <hughd@xxxxxxxxxx>
Cc: Jason Gunthorpe <jgg@xxxxxxxxxx>
Cc: Junxiao Chang <junxiao.chang@xxxxxxxxx>
Cc: Matthew Wilcox <willy@xxxxxxxxxxxxx>
Cc: Oscar Salvador <osalvador@xxxxxxx>
Cc: Peter Xu <peterx@xxxxxxxxxx>
Cc: Vivek Kasireddy <vivek.kasireddy@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/gup.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/mm/gup.c~mm-gup-avoid-an-unnecessary-allocation-call-for-foll_longterm-cases-fix-2
+++ a/mm/gup.c
@@ -2399,7 +2399,7 @@ migrate_longterm_unpinnable_folios(struc
* calling folio_isolate_lru() which takes a reference so the
* folio won't be freed if it's migrating.
*/
- unpin_folio(pofs_get_folio(pofs, i));
+ unpin_folio(folio);
pofs_clear_entry(pofs, i);
}
_
Patches currently in -mm which might be from jhubbard@xxxxxxxxxx are
mm-gup-avoid-an-unnecessary-allocation-call-for-foll_longterm-cases.patch
mm-gup-avoid-an-unnecessary-allocation-call-for-foll_longterm-cases-fix.patch
mm-gup-avoid-an-unnecessary-allocation-call-for-foll_longterm-cases-fix-2.patch
