Commit a9595b30 authored by Matthew Wilcox (Oracle)'s avatar Matthew Wilcox (Oracle) Committed by Andrew Morton
Browse files

mm: add folio_mapping_flags() 

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: default avatarMatthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: default avatarChristoph Hellwig <hch@lst.de>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
parent da08e9b7

include/linux/page-flags.h

+5 −0
Original line number Diff line number Diff line
@@ -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;