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mm/huge_memory: page_remove_rmap() -> folio_remove_rmap_pmd() 

Let's convert zap_huge_pmd() and set_pmd_migration_entry().  While at it,
perform some more folio conversion.

Link: https://lkml.kernel.org/r/20231220224504.646757-26-david@redhat.com
Signed-off-by: David Hildenbrand <david@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Muchun Song <songmuchun@bytedance.com>
Cc: Peter Xu <peterx@redhat.com>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Cc: Yin Fengwei <fengwei.yin@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
David Hildenbrand 2023-12-20 23:44:49 +01:00 committed by Andrew Morton
parent 5cc9695f06
commit a8e61d584e
1 changed files with 14 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

26
mm/huge_memory.c
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@ -1898,7 +1898,7 @@ int zap_huge_pmd(struct mmu_gather *tlb, struct vm_area_struct *vma,
if (pmd_present(orig_pmd)) {
page = pmd_page(orig_pmd);
page_remove_rmap(page, vma, true);
folio_remove_rmap_pmd(page_folio(page), page, vma);
VM_BUG_ON_PAGE(page_mapcount(page) < 0, page);
VM_BUG_ON_PAGE(!PageHead(page), page);
} else if (thp_migration_supported()) {
@ -2433,12 +2433,13 @@ static void __split_huge_pmd_locked(struct vm_area_struct *vma, pmd_t *pmd,
page = pfn_swap_entry_to_page(entry);
} else {
page = pmd_page(old_pmd);
if (!PageDirty(page) && pmd_dirty(old_pmd))
set_page_dirty(page);
if (!PageReferenced(page) && pmd_young(old_pmd))
SetPageReferenced(page);
page_remove_rmap(page, vma, true);
put_page(page);
folio = page_folio(page);
if (!folio_test_dirty(folio) && pmd_dirty(old_pmd))
folio_set_dirty(folio);
if (!folio_test_referenced(folio) && pmd_young(old_pmd))
folio_set_referenced(folio);
folio_remove_rmap_pmd(folio, page, vma);
folio_put(folio);
}
add_mm_counter(mm, mm_counter_file(page), -HPAGE_PMD_NR);
return;
@ -2593,7 +2594,7 @@ static void __split_huge_pmd_locked(struct vm_area_struct *vma, pmd_t *pmd,
pte_unmap(pte - 1);
if (!pmd_migration)
page_remove_rmap(page, vma, true);
folio_remove_rmap_pmd(folio, page, vma);
if (freeze)
put_page(page);
@ -3536,6 +3537,7 @@ late_initcall(split_huge_pages_debugfs);
int set_pmd_migration_entry(struct page_vma_mapped_walk *pvmw,
struct page *page)
{
struct folio *folio = page_folio(page);
struct vm_area_struct *vma = pvmw->vma;
struct mm_struct *mm = vma->vm_mm;
unsigned long address = pvmw->address;
@ -3551,14 +3553,14 @@ int set_pmd_migration_entry(struct page_vma_mapped_walk *pvmw,
pmdval = pmdp_invalidate(vma, address, pvmw->pmd);
/* See page_try_share_anon_rmap(): invalidate PMD first. */
anon_exclusive = PageAnon(page) && PageAnonExclusive(page);
anon_exclusive = folio_test_anon(folio) && PageAnonExclusive(page);
if (anon_exclusive && page_try_share_anon_rmap(page)) {
set_pmd_at(mm, address, pvmw->pmd, pmdval);
return -EBUSY;
}
if (pmd_dirty(pmdval))
set_page_dirty(page);
folio_set_dirty(folio);
if (pmd_write(pmdval))
entry = make_writable_migration_entry(page_to_pfn(page));
else if (anon_exclusive)
@ -3575,8 +3577,8 @@ int set_pmd_migration_entry(struct page_vma_mapped_walk *pvmw,
if (pmd_uffd_wp(pmdval))
pmdswp = pmd_swp_mkuffd_wp(pmdswp);
set_pmd_at(mm, address, pvmw->pmd, pmdswp);
page_remove_rmap(page, vma, true);
put_page(page);
folio_remove_rmap_pmd(folio, page, vma);
folio_put(folio);
trace_set_migration_pmd(address, pmd_val(pmdswp));
return 0;