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mm/vmscan: Turn page_check_dirty_writeback() into folio_check_dirty_writeback()

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Saves a few calls to compound_head().

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Matthew Wilcox (Oracle) 2022-01-17 14:35:22 -05:00
parent cbcc268bb1
commit e20c41b109
1 changed files with 10 additions and 10 deletions
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20
mm/vmscan.c
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@ -1437,7 +1437,7 @@ static enum page_references page_check_references(struct page *page,
}
/* Check if a page is dirty or under writeback */
static void page_check_dirty_writeback(struct page *page,
static void folio_check_dirty_writeback(struct folio *folio,
bool *dirty, bool *writeback)
{
struct address_space *mapping;
@ -1446,24 +1446,24 @@ static void page_check_dirty_writeback(struct page *page,
* Anonymous pages are not handled by flushers and must be written
* from reclaim context. Do not stall reclaim based on them
*/
if (!page_is_file_lru(page) ||
(PageAnon(page) && !PageSwapBacked(page))) {
if (!folio_is_file_lru(folio) ||
(folio_test_anon(folio) && !folio_test_swapbacked(folio))) {
*dirty = false;
*writeback = false;
return;
}
/* By default assume that the page flags are accurate */
*dirty = PageDirty(page);
*writeback = PageWriteback(page);
/* By default assume that the folio flags are accurate */
*dirty = folio_test_dirty(folio);
*writeback = folio_test_writeback(folio);
/* Verify dirty/writeback state if the filesystem supports it */
if (!page_has_private(page))
if (!folio_test_private(folio))
return;
mapping = page_mapping(page);
mapping = folio_mapping(folio);
if (mapping && mapping->a_ops->is_dirty_writeback)
mapping->a_ops->is_dirty_writeback(page, dirty, writeback);
mapping->a_ops->is_dirty_writeback(&folio->page, dirty, writeback);
}
static struct page *alloc_demote_page(struct page *page, unsigned long node)
@ -1572,7 +1572,7 @@ static unsigned int shrink_page_list(struct list_head *page_list,
* reclaim_congested. kswapd will stall and start writing
* pages if the tail of the LRU is all dirty unqueued pages.
*/
page_check_dirty_writeback(page, &dirty, &writeback);
folio_check_dirty_writeback(folio, &dirty, &writeback);
if (dirty || writeback)
stat->nr_dirty++;