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mm: pass a folio to swap_readpage_bdev_sync()

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Make it plain that this takes the head page (which before this point
was just an assumption, but is now enforced by the compiler).

Link: https://lkml.kernel.org/r/20231213215842.671461-8-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) 2023-12-13 21:58:36 +00:00 committed by Andrew Morton
parent 64a24e55e3
commit 2c184d821e
1 changed files with 4 additions and 4 deletions
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8
mm/page_io.c
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@ -454,15 +454,15 @@ static void swap_readpage_fs(struct folio *folio, struct swap_iocb **plug)
*plug = sio;
}
static void swap_readpage_bdev_sync(struct page *page,
static void swap_readpage_bdev_sync(struct folio *folio,
struct swap_info_struct *sis)
{
struct bio_vec bv;
struct bio bio;
bio_init(&bio, sis->bdev, &bv, 1, REQ_OP_READ);
bio.bi_iter.bi_sector = swap_page_sector(page);
__bio_add_page(&bio, page, thp_size(page), 0);
bio.bi_iter.bi_sector = swap_page_sector(&folio->page);
bio_add_folio_nofail(&bio, folio, folio_size(folio), 0);
/*
* Keep this task valid during swap readpage because the oom killer may
* attempt to access it in the page fault retry time check.
@ -516,7 +516,7 @@ void swap_readpage(struct page *page, bool synchronous, struct swap_iocb **plug)
} else if (data_race(sis->flags & SWP_FS_OPS)) {
swap_readpage_fs(folio, plug);
} else if (synchronous || (sis->flags & SWP_SYNCHRONOUS_IO)) {
swap_readpage_bdev_sync(page, sis);
swap_readpage_bdev_sync(folio, sis);
} else {
swap_readpage_bdev_async(page, sis);
}