The patch titled
Subject: mm: convert free_zone_device_page to free_zone_device_folio
has been added to the -mm mm-unstable branch. Its filename is
mm-convert-free_zone_device_page-to-free_zone_device_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-free_zone_device_page-to-free_zone_device_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 free_zone_device_page to free_zone_device_folio
Date: Fri, 5 Apr 2024 16:32:27 +0100
Both callers already have a folio; pass it in and save a few calls to
compound_head().
Link: https://lkml.kernel.org/r/20240405153228.2563754-6-willy@xxxxxxxxxxxxx
Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Reviewed-by: Zi Yan <ziy@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/internal.h | 2 +-
mm/memremap.c | 30 ++++++++++++++++--------------
mm/swap.c | 4 ++--
3 files changed, 19 insertions(+), 17 deletions(-)
--- a/mm/internal.h~mm-convert-free_zone_device_page-to-free_zone_device_folio
+++ a/mm/internal.h
@@ -1149,7 +1149,7 @@ void __vunmap_range_noflush(unsigned lon
int numa_migrate_prep(struct folio *folio, struct vm_fault *vmf,
unsigned long addr, int page_nid, int *flags);
-void free_zone_device_page(struct page *page);
+void free_zone_device_folio(struct folio *folio);
int migrate_device_coherent_page(struct page *page);
/*
--- a/mm/memremap.c~mm-convert-free_zone_device_page-to-free_zone_device_folio
+++ a/mm/memremap.c
@@ -456,21 +456,23 @@ struct dev_pagemap *get_dev_pagemap(unsi
}
EXPORT_SYMBOL_GPL(get_dev_pagemap);
-void free_zone_device_page(struct page *page)
+void free_zone_device_folio(struct folio *folio)
{
- if (WARN_ON_ONCE(!page->pgmap->ops || !page->pgmap->ops->page_free))
+ if (WARN_ON_ONCE(!folio->page.pgmap->ops ||
+ !folio->page.pgmap->ops->page_free))
return;
- mem_cgroup_uncharge(page_folio(page));
+ mem_cgroup_uncharge(folio);
/*
* Note: we don't expect anonymous compound pages yet. Once supported
* and we could PTE-map them similar to THP, we'd have to clear
* PG_anon_exclusive on all tail pages.
*/
- VM_BUG_ON_PAGE(PageAnon(page) && PageCompound(page), page);
- if (PageAnon(page))
- __ClearPageAnonExclusive(page);
+ if (folio_test_anon(folio)) {
+ VM_BUG_ON_FOLIO(folio_test_large(folio), folio);
+ __ClearPageAnonExclusive(folio_page(folio, 0));
+ }
/*
* When a device managed page is freed, the folio->mapping field
@@ -481,20 +483,20 @@ void free_zone_device_page(struct page *
*
* For other types of ZONE_DEVICE pages, migration is either
* handled differently or not done at all, so there is no need
- * to clear page->mapping.
+ * to clear folio->mapping.
*/
- page->mapping = NULL;
- page->pgmap->ops->page_free(page);
+ folio->mapping = NULL;
+ folio->page.pgmap->ops->page_free(folio_page(folio, 0));
- if (page->pgmap->type != MEMORY_DEVICE_PRIVATE &&
- page->pgmap->type != MEMORY_DEVICE_COHERENT)
+ if (folio->page.pgmap->type != MEMORY_DEVICE_PRIVATE &&
+ folio->page.pgmap->type != MEMORY_DEVICE_COHERENT)
/*
- * Reset the page count to 1 to prepare for handing out the page
+ * Reset the refcount to 1 to prepare for handing out the page
* again.
*/
- set_page_count(page, 1);
+ folio_set_count(folio, 1);
else
- put_dev_pagemap(page->pgmap);
+ put_dev_pagemap(folio->page.pgmap);
}
void zone_device_page_init(struct page *page)
--- a/mm/swap.c~mm-convert-free_zone_device_page-to-free_zone_device_folio
+++ a/mm/swap.c
@@ -115,7 +115,7 @@ static void page_cache_release(struct fo
void __folio_put(struct folio *folio)
{
if (unlikely(folio_is_zone_device(folio))) {
- free_zone_device_page(&folio->page);
+ free_zone_device_folio(folio);
return;
} else if (folio_test_hugetlb(folio)) {
free_huge_folio(folio);
@@ -984,7 +984,7 @@ void folios_put_refs(struct folio_batch
if (put_devmap_managed_page_refs(&folio->page, nr_refs))
continue;
if (folio_ref_sub_and_test(folio, nr_refs))
- free_zone_device_page(&folio->page);
+ free_zone_device_folio(folio);
continue;
}
_
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
mm-convert-arch_clear_hugepage_flags-to-take-a-folio-fix.patch
slub-remove-use-of-page-flags.patch
remove-references-to-page-flags-in-documentation.patch
proc-rewrite-stable_page_flags.patch
proc-rewrite-stable_page_flags-fix.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
mm-use-rwsem-assertion-macros-for-mmap_lock.patch
filemap-remove-__set_page_dirty.patch
mm-correct-page_mapped_in_vma-for-large-folios.patch
mm-remove-vma_address.patch
mm-rename-vma_pgoff_address-back-to-vma_address.patch
khugepaged-inline-hpage_collapse_alloc_folio.patch
khugepaged-convert-alloc_charge_hpage-to-alloc_charge_folio.patch
khugepaged-remove-hpage-from-collapse_huge_page.patch
khugepaged-pass-a-folio-to-__collapse_huge_page_copy.patch
khugepaged-remove-hpage-from-collapse_file.patch
khugepaged-use-a-folio-throughout-collapse_file.patch
khugepaged-use-a-folio-throughout-hpage_collapse_scan_file.patch
proc-convert-clear_refs_pte_range-to-use-a-folio.patch
proc-convert-smaps_account-to-use-a-folio.patch
mm-remove-page_idle-and-page_young-wrappers.patch
mm-generate-page_idle_flag-definitions.patch
proc-convert-gather_stats-to-use-a-folio.patch
proc-convert-smaps_page_accumulate-to-use-a-folio.patch
proc-pass-a-folio-to-smaps_page_accumulate.patch
proc-convert-smaps_pmd_entry-to-use-a-folio.patch
mm-remove-struct-page-from-get_shadow_from_swap_cache.patch
hugetlb-convert-alloc_buddy_hugetlb_folio-to-use-a-folio.patch
mm-convert-pagecache_isize_extended-to-use-a-folio.patch
mm-free-non-hugetlb-large-folios-in-a-batch.patch
mm-combine-free_the_page-and-free_unref_page.patch
mm-inline-destroy_large_folio-into-__folio_put_large.patch
mm-combine-__folio_put_small-__folio_put_large-and-__folio_put.patch
mm-convert-free_zone_device_page-to-free_zone_device_folio.patch
