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mm/page_io: use a folio in swap_writepage_bdev_async()

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Saves one implicit call to compound_head().

Link: https://lkml.kernel.org/r/20230721034451.16412-9-zhangpeng362@huawei.com
Signed-off-by: ZhangPeng <zhangpeng362@huawei.com>
Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Kefeng Wang <wangkefeng.wang@huawei.com>
Cc: Nanyong Sun <sunnanyong@huawei.com>
Cc: Sidhartha Kumar <sidhartha.kumar@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
ZhangPeng 2023-07-21 11:44:49 +08:00 committed by Andrew Morton
parent f54fcaabd3
commit 2675251d50
1 changed files with 3 additions and 2 deletions
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5
mm/page_io.c
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@ -352,6 +352,7 @@ static void swap_writepage_bdev_async(struct page *page,
struct writeback_control *wbc, struct swap_info_struct *sis)
{
struct bio *bio;
struct folio *folio = page_folio(page);
bio = bio_alloc(sis->bdev, 1,
REQ_OP_WRITE | REQ_SWAP | wbc_to_write_flags(wbc),
@ -362,8 +363,8 @@ static void swap_writepage_bdev_async(struct page *page,
bio_associate_blkg_from_page(bio, page);
count_swpout_vm_event(page);
set_page_writeback(page);
unlock_page(page);
folio_start_writeback(folio);
folio_unlock(folio);
submit_bio(bio);
}