From: Matthew Wilcox (Oracle) Date: Mon, 17 Feb 2025 19:20:08 +0000 (+0000) Subject: fs: remove folio_file_mapping() X-Git-Tag: v6.15-rc1~81^2~306 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=0d40cfe63a2f;p=thirdparty%2Flinux.git 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: Matthew Wilcox (Oracle) Signed-off-by: Andrew Morton --- diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h index 975c56fb4f853..ad7c0f615e9b0 100644 --- a/include/linux/pagemap.h +++ b/include/linux/pagemap.h @@ -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.