block: add helpers to run flush_dcache_page() against a bio and a request's pages
[linux-2.6.git] / fs / bio.c
index 12da5db..e23a63f 100644 (file)
--- a/fs/bio.c
+++ b/fs/bio.c
@@ -1393,6 +1393,18 @@ void bio_check_pages_dirty(struct bio *bio)
        }
 }
 
+#if ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE
+void bio_flush_dcache_pages(struct bio *bi)
+{
+       int i;
+       struct bio_vec *bvec;
+
+       bio_for_each_segment(bvec, bi, i)
+               flush_dcache_page(bvec->bv_page);
+}
+EXPORT_SYMBOL(bio_flush_dcache_pages);
+#endif
+
 /**
  * bio_endio - end I/O on a bio
  * @bio:       bio