mm: remove page_rmapping()

After converting the last user to folio_raw_mapping(), we can safely
remove the function.

Link: https://lkml.kernel.org/r/20230701032853.258697-3-zhangpeng362@huawei.com
Signed-off-by: ZhangPeng <zhangpeng362@huawei.com>
Reviewed-by: Sidhartha Kumar <sidhartha.kumar@oracle.com>
Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Kefeng Wang <wangkefeng.wang@huawei.com>
Cc: Nanyong Sun <sunnanyong@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/include/linux/mm.h b/include/linux/mm.h
index 406ab9ea818fea6efbbb41fc8614476b649dd9f2..6d150990e35c1017e70602fb75705a59a6e5905f 100644 (file)
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -2170,7 +2170,6 @@ static inline void *folio_address(const struct folio *folio)
        return page_address(&folio->page);
 }
 
-extern void *page_rmapping(struct page *page);
 extern pgoff_t __page_file_index(struct page *page);
 
 /*

diff --git a/mm/util.c b/mm/util.c
index dd12b9531ac4cad5f37879c2412719b3724ecb78..5e9305189c3fdc76636cf86233ccc7071beff10f 100644 (file)
--- a/mm/util.c
+++ b/mm/util.c
@@ -734,12 +734,6 @@ void *vcalloc(size_t n, size_t size)
 }
 EXPORT_SYMBOL(vcalloc);
 
-/* Neutral page->mapping pointer to address_space or anon_vma or other */
-void *page_rmapping(struct page *page)
-{
-       return folio_raw_mapping(page_folio(page));
-}
-
 struct anon_vma *folio_anon_vma(struct folio *folio)
 {
        unsigned long mapping = (unsigned long)folio->mapping;