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filemap: Convert page_cache_delete to take a folio

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It was already assuming a head page, so this is a straightforward
conversion.  Convert the one caller to call page_folio(), even though
it must currently be passing in a head page.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: William Kucharski <william.kucharski@oracle.com>
This commit is contained in:
Matthew Wilcox (Oracle) 2021-05-08 00:35:49 -04:00
parent 9f2b04a25a
commit a548b61583
1 changed files with 11 additions and 11 deletions
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22
mm/filemap.c
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@ -121,27 +121,26 @@
*/
static void page_cache_delete(struct address_space *mapping,
struct page *page, void *shadow)
struct folio *folio, void *shadow)
{
XA_STATE(xas, &mapping->i_pages, page->index);
unsigned int nr = 1;
XA_STATE(xas, &mapping->i_pages, folio->index);
long nr = 1;
mapping_set_update(&xas, mapping);
/* hugetlb pages are represented by a single entry in the xarray */
if (!PageHuge(page)) {
xas_set_order(&xas, page->index, compound_order(page));
nr = compound_nr(page);
if (!folio_test_hugetlb(folio)) {
xas_set_order(&xas, folio->index, folio_order(folio));
nr = folio_nr_pages(folio);
}
VM_BUG_ON_PAGE(!PageLocked(page), page);
VM_BUG_ON_PAGE(PageTail(page), page);
VM_BUG_ON_PAGE(nr != 1 && shadow, page);
VM_BUG_ON_FOLIO(!folio_test_locked(folio), folio);
VM_BUG_ON_FOLIO(nr != 1 && shadow, folio);
xas_store(&xas, shadow);
xas_init_marks(&xas);
page->mapping = NULL;
folio->mapping = NULL;
/* Leave page->index set: truncation lookup relies upon it */
mapping->nrpages -= nr;
}
@ -223,12 +222,13 @@ static void unaccount_page_cache_page(struct address_space *mapping,
*/
void __delete_from_page_cache(struct page *page, void *shadow)
{
struct folio *folio = page_folio(page);
struct address_space *mapping = page->mapping;
trace_mm_filemap_delete_from_page_cache(page);
unaccount_page_cache_page(mapping, page);
page_cache_delete(mapping, page, shadow);
page_cache_delete(mapping, folio, shadow);
}
static void page_cache_free_page(struct address_space *mapping,