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fs: aio: use a folio in aio_setup_ring()

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Use a folio throughout aio_setup_ring() to remove calls to compound_head(),
also use folio_end_read() to simultaneously mark the folio uptodate and
unlock it.

Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Link: https://lore.kernel.org/r/20240321131640.948634-2-wangkefeng.wang@huawei.com
Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Christian Brauner <brauner@kernel.org>
This commit is contained in:
Kefeng Wang 2024-03-21 21:16:38 +08:00 committed by Christian Brauner
parent 85a6a1aff0
commit 75a07b557a
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GPG Key ID: 91C61BC06578DCA2
1 changed files with 12 additions and 10 deletions
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22
fs/aio.c
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@ -527,17 +527,19 @@ static int aio_setup_ring(struct kioctx *ctx, unsigned int nr_events)
}
for (i = 0; i < nr_pages; i++) {
struct page *page;
page = find_or_create_page(file->f_mapping,
i, GFP_USER | __GFP_ZERO);
if (!page)
break;
pr_debug("pid(%d) page[%d]->count=%d\n",
current->pid, i, page_count(page));
SetPageUptodate(page);
unlock_page(page);
struct folio *folio;
ctx->ring_pages[i] = page;
folio = __filemap_get_folio(file->f_mapping, i,
FGP_LOCK | FGP_ACCESSED | FGP_CREAT,
GFP_USER | __GFP_ZERO);
if (IS_ERR(folio))
break;
pr_debug("pid(%d) [%d] folio->count=%d\n", current->pid, i,
folio_ref_count(folio));
folio_end_read(folio, true);
ctx->ring_pages[i] = &folio->page;
}
ctx->nr_pages = i;