The patch titled
Subject: mm: convert migrate_vma_collect_pmd to use a folio
has been added to the -mm mm-unstable branch. Its filename is
mm-convert-migrate_vma_collect_pmd-to-use-a-folio.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-convert-migrate_vma_collect_pmd-to-use-a-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: mm: convert migrate_vma_collect_pmd to use a folio
Date: Tue, 26 Mar 2024 20:28:24 +0000
Convert the pmd directly to a folio and use it. Turns four calls to
compound_head() into one.
Link: https://lkml.kernel.org/r/20240326202833.523759-5-willy@xxxxxxxxxxxxx
Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/migrate_device.c | 16 ++++++++--------
1 file changed, 8 insertions(+), 8 deletions(-)
--- a/mm/migrate_device.c~mm-convert-migrate_vma_collect_pmd-to-use-a-folio
+++ a/mm/migrate_device.c
@@ -71,7 +71,7 @@ again:
return migrate_vma_collect_hole(start, end, -1, walk);
if (pmd_trans_huge(*pmdp)) {
- struct page *page;
+ struct folio *folio;
ptl = pmd_lock(mm, pmdp);
if (unlikely(!pmd_trans_huge(*pmdp))) {
@@ -79,21 +79,21 @@ again:
goto again;
}
- page = pmd_page(*pmdp);
- if (is_huge_zero_page(page)) {
+ folio = pmd_folio(*pmdp);
+ if (is_huge_zero_folio(folio)) {
spin_unlock(ptl);
split_huge_pmd(vma, pmdp, addr);
} else {
int ret;
- get_page(page);
+ folio_get(folio);
spin_unlock(ptl);
- if (unlikely(!trylock_page(page)))
+ if (unlikely(!folio_trylock(folio)))
return migrate_vma_collect_skip(start, end,
walk);
- ret = split_huge_page(page);
- unlock_page(page);
- put_page(page);
+ ret = split_folio(folio);
+ folio_unlock(folio);
+ folio_put(folio);
if (ret)
return migrate_vma_collect_skip(start, end,
walk);
_
Patches currently in -mm which might be from willy@xxxxxxxxxxxxx are
mm-always-initialise-folio-_deferred_list.patch
mm-create-folio_flag_false-and-folio_type_ops-macros.patch
mm-remove-folio_prep_large_rmappable.patch
mm-support-page_mapcount-on-page_has_type-pages.patch
mm-turn-folio_test_hugetlb-into-a-pagetype.patch
mm-turn-folio_test_hugetlb-into-a-pagetype-fix.patch
mm-remove-a-call-to-compound_head-from-is_page_hwpoison.patch
mm-free-up-pg_slab.patch
mm-free-up-pg_slab-fix.patch
mm-improve-dumping-of-mapcount-and-page_type.patch
hugetlb-remove-mention-of-destructors.patch
sh-remove-use-of-pg_arch_1-on-individual-pages.patch
xtensa-remove-uses-of-pg_arch_1-on-individual-pages.patch
mm-make-page_ext_get-take-a-const-argument.patch
mm-make-folio_test_idle-and-folio_test_young-take-a-const-argument.patch
mm-make-is_free_buddy_page-take-a-const-argument.patch
mm-make-page_mapped-take-a-const-argument.patch
mm-convert-arch_clear_hugepage_flags-to-take-a-folio.patch
slub-remove-use-of-page-flags.patch
remove-references-to-page-flags-in-documentation.patch
proc-rewrite-stable_page_flags.patch
sparc-use-is_huge_zero_pmd.patch
mm-add-is_huge_zero_folio.patch
mm-add-pmd_folio.patch
mm-convert-migrate_vma_collect_pmd-to-use-a-folio.patch
mm-convert-huge_zero_page-to-huge_zero_folio.patch
mm-convert-do_huge_pmd_anonymous_page-to-huge_zero_folio.patch
dax-use-huge_zero_folio.patch
mm-rename-mm_put_huge_zero_page-to-mm_put_huge_zero_folio.patch
