Commit 0d40cfe6 authored by Matthew Wilcox (Oracle)'s avatar Matthew Wilcox (Oracle) Committed by Andrew Morton
Browse files

fs: remove folio_file_mapping() 

No callers of this function remain as filesystems no longer see swapfile
pages through their normal read/write paths.

Link: https://lkml.kernel.org/r/20250217192009.437916-3-willy@infradead.org


Signed-off-by: default avatarMatthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
parent 52d671a1

include/linux/pagemap.h

+0 −20
Original line number Diff line number Diff line
@@ -535,26 +535,6 @@ static inline void filemap_nr_thps_dec(struct address_space *mapping) 
struct address_space *folio_mapping(struct folio *);

struct address_space *swapcache_mapping(struct folio *);



/**

 * folio_file_mapping - Find the mapping this folio belongs to.

 * @folio: The folio.

 *

 * For folios which are in the page cache, return the mapping that this

 * page belongs to.  Folios in the swap cache return the mapping of the

 * swap file or swap device where the data is stored.  This is different

 * from the mapping returned by folio_mapping().  The only reason to

 * use it is if, like NFS, you return 0 from ->activate_swapfile.

 *

 * Do not call this for folios which aren't in the page cache or swap cache.

 */

static inline struct address_space *folio_file_mapping(struct folio *folio)

{

	if (unlikely(folio_test_swapcache(folio)))

		return swapcache_mapping(folio);



	return folio->mapping;

}



/**

 * folio_flush_mapping - Find the file mapping this folio belongs to.

 * @folio: The folio.