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mm: remove a call to compound_head() from is_page_hwpoison()

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We can call it only once instead of twice.

Link: https://lkml.kernel.org/r/20240321142448.1645400-7-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Miaohe Lin <linmiaohe@huawei.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Oscar Salvador <osalvador@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Matthew Wilcox (Oracle) 2024-03-21 14:24:44 +00:00 committed by Andrew Morton
parent 85edc15a4c
commit 8682a7be36
1 changed files with 5 additions and 2 deletions
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7
include/linux/page-flags.h
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@ -1065,11 +1065,14 @@ static inline bool PageHuge(const struct page *page)
* best effort only and inherently racy: there is no way to synchronize with
* failing hardware.
*/
static inline bool is_page_hwpoison(struct page *page)
static inline bool is_page_hwpoison(const struct page *page)
{
const struct folio *folio;
if (PageHWPoison(page))
return true;
return PageHuge(page) && PageHWPoison(compound_head(page));
folio = page_folio(page);
return folio_test_hugetlb(folio) && PageHWPoison(&folio->page);
}
extern bool is_free_buddy_page(struct page *page);