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huge_memory: convert unmap_page() to unmap_folio()

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Remove a folio->page->folio conversion.

Link: https://lkml.kernel.org/r/20220902194653.1739778-54-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Matthew Wilcox (Oracle) 2022-09-02 20:46:49 +01:00 committed by Andrew Morton
parent 3e9a13daa6
commit 684555aacc
1 changed files with 6 additions and 7 deletions
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13
mm/huge_memory.c
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@ -2355,13 +2355,12 @@ void vma_adjust_trans_huge(struct vm_area_struct *vma,
} }
} }
static void unmap_page(struct page *page) static void unmap_folio(struct folio *folio)
{ {
struct folio *folio = page_folio(page);
enum ttu_flags ttu_flags = TTU_RMAP_LOCKED | TTU_SPLIT_HUGE_PMD | enum ttu_flags ttu_flags = TTU_RMAP_LOCKED | TTU_SPLIT_HUGE_PMD |
TTU_SYNC; TTU_SYNC;
VM_BUG_ON_PAGE(!PageHead(page), page); VM_BUG_ON_FOLIO(!folio_test_large(folio), folio);
/* /*
* Anon pages need migration entries to preserve them, but file * Anon pages need migration entries to preserve them, but file
@ -2378,7 +2377,7 @@ static void remap_page(struct folio *folio, unsigned long nr)
{ {
int i = 0; int i = 0;
/* If unmap_page() uses try_to_migrate() on file, remove this check */ /* If unmap_folio() uses try_to_migrate() on file, remove this check */
if (!folio_test_anon(folio)) if (!folio_test_anon(folio))
return; return;
for (;;) { for (;;) {
@ -2428,7 +2427,7 @@ static void __split_huge_page_tail(struct page *head, int tail,
* for example lock_page() which set PG_waiters. * for example lock_page() which set PG_waiters.
* *
* Note that for mapped sub-pages of an anonymous THP, * Note that for mapped sub-pages of an anonymous THP,
* PG_anon_exclusive has been cleared in unmap_page() and is stored in * PG_anon_exclusive has been cleared in unmap_folio() and is stored in
* the migration entry instead from where remap_page() will restore it. * the migration entry instead from where remap_page() will restore it.
* We can still have PG_anon_exclusive set on effectively unmapped and * We can still have PG_anon_exclusive set on effectively unmapped and
* unreferenced sub-pages of an anonymous THP: we can simply drop * unreferenced sub-pages of an anonymous THP: we can simply drop
@ -2700,7 +2699,7 @@ int split_huge_page_to_list(struct page *page, struct list_head *list)
} }
/* /*
* Racy check if we can split the page, before unmap_page() will * Racy check if we can split the page, before unmap_folio() will
* split PMDs * split PMDs
*/ */
if (!can_split_folio(folio, &extra_pins)) { if (!can_split_folio(folio, &extra_pins)) {
@ -2708,7 +2707,7 @@ int split_huge_page_to_list(struct page *page, struct list_head *list)
goto out_unlock; goto out_unlock;
} }
unmap_page(&folio->page); unmap_folio(folio);
/* block interrupt reentry in xa_lock and spinlock */ /* block interrupt reentry in xa_lock and spinlock */
local_irq_disable(); local_irq_disable();