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mm: add folio_mapping_flags()

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This is the equivalent of PageMappingFlags and is needed for converting
mm/migrate.c to folios.

Link: https://lkml.kernel.org/r/20220504182857.4013401-25-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Matthew Wilcox (Oracle) 2022-05-12 20:23:05 -07:00 committed by Andrew Morton
parent da08e9b793
commit a9595b305c
1 changed files with 5 additions and 0 deletions
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5
include/linux/page-flags.h
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@ -650,6 +650,11 @@ __PAGEFLAG(Reported, reported, PF_NO_COMPOUND)
#define PAGE_MAPPING_KSM (PAGE_MAPPING_ANON | PAGE_MAPPING_MOVABLE)
#define PAGE_MAPPING_FLAGS (PAGE_MAPPING_ANON | PAGE_MAPPING_MOVABLE)
static __always_inline bool folio_mapping_flags(struct folio *folio)
{
return ((unsigned long)folio->mapping & PAGE_MAPPING_FLAGS) != 0;
}
static __always_inline int PageMappingFlags(struct page *page)
{
return ((unsigned long)page->mapping & PAGE_MAPPING_FLAGS) != 0;