diff --git a/block/bio.c b/block/bio.c
index ad9c3aa9bf7dfc9dfd4f7715bae0b0b792aa0dca..bb55b94bb36129fa5b81d36505aa945ca9f25de6 100644
--- a/block/bio.c
+++ b/block/bio.c
@@ -1760,18 +1760,6 @@ void generic_end_io_acct(struct request_queue *q, int req_op,
 }
 EXPORT_SYMBOL(generic_end_io_acct);
 
-#if ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE
-void bio_flush_dcache_pages(struct bio *bi)
-{
-	struct bio_vec bvec;
-	struct bvec_iter iter;
-
-	bio_for_each_segment(bvec, bi, iter)
-		flush_dcache_page(bvec.bv_page);
-}
-EXPORT_SYMBOL(bio_flush_dcache_pages);
-#endif
-
 static inline bool bio_remaining_done(struct bio *bio)
 {
 	/*
diff --git a/include/linux/bio.h b/include/linux/bio.h
index ee11c43247515880f84167e268f3fc055464449d..5a8ae56e09ff8a3ad0813a197936f54754bd772c 100644
--- a/include/linux/bio.h
+++ b/include/linux/bio.h
@@ -443,17 +443,6 @@ void generic_end_io_acct(struct request_queue *q, int op,
 				struct hd_struct *part,
 				unsigned long start_time);
 
-#ifndef ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE
-# error	"You should define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE for your platform"
-#endif
-#if ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE
-extern void bio_flush_dcache_pages(struct bio *bi);
-#else
-static inline void bio_flush_dcache_pages(struct bio *bi)
-{
-}
-#endif
-
 extern void bio_copy_data_iter(struct bio *dst, struct bvec_iter *dst_iter,
 			       struct bio *src, struct bvec_iter *src_iter);
 extern void bio_copy_data(struct bio *dst, struct bio *src);