The patch titled
Subject: mm: simplify folio_migrate_mapping()
has been added to the -mm mm-unstable branch. Its filename is
mm-simplify-folio_migrate_mapping.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-simplify-folio_migrate_mapping.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: Hugh Dickins <hughd@xxxxxxxxxx>
Subject: mm: simplify folio_migrate_mapping()
Date: Sat, 6 Jul 2024 14:29:00 -0700 (PDT)
Now that folio_undo_large_rmappable() is an inline function checking
order and large_rmappable for itself (and __folio_undo_large_rmappable()
is now declared even when CONFIG_TRANASPARENT_HUGEPAGE is off) there is
no need for folio_migrate_mapping() to check large and large_rmappable
first (in the mapping case when it has had to freeze anyway).
Link: https://lkml.kernel.org/r/68feee73-050e-8e98-7a3a-abf78738d92c@xxxxxxxxxx
Signed-off-by: Hugh Dickins <hughd@xxxxxxxxxx>
Reviewed-by: Zi Yan <ziy@xxxxxxxxxx>
Cc: Baolin Wang <baolin.wang@xxxxxxxxxxxxxxxxx>
Cc: Barry Song <baohua@xxxxxxxxxx>
Cc: David Hildenbrand <david@xxxxxxxxxx>
Cc: Kefeng Wang <wangkefeng.wang@xxxxxxxxxx>
Cc: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Cc: Nhat Pham <nphamcs@xxxxxxxxx>
Cc: Yang Shi <shy828301@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/migrate.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
--- a/mm/migrate.c~mm-simplify-folio_migrate_mapping
+++ a/mm/migrate.c
@@ -438,8 +438,7 @@ static int __folio_migrate_mapping(struc
}
/* Take off deferred split queue while frozen and memcg set */
- if (folio_test_large(folio) && folio_test_large_rmappable(folio))
- folio_undo_large_rmappable(folio);
+ folio_undo_large_rmappable(folio);
/*
* Now we know that no one else is looking at the folio:
_
Patches currently in -mm which might be from hughd@xxxxxxxxxx are
mm-simplify-folio_migrate_mapping.patch
