[PATCH 07/10] block: Add missing flush_dcache_page() call

Kent Overstreet
2018-05-09T01:33:55Z

Since a bio can point to userspace pages (e.g. direct IO), this is
generally necessary.

Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
---
block/bio.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/block/bio.c b/block/bio.c
index c58544d4bc..ce8e259f9a 100644
--- a/block/bio.c
+++ b/block/bio.c
@@ -994,6 +994,8 @@ void bio_copy_data_iter(struct bio *dst, struct bvec_iter *dst_iter,
kunmap_atomic(dst_p);
kunmap_atomic(src_p);

+ flush_dcache_page(dst_bv.bv_page);
+
bio_advance_iter(src, src_iter, bytes);
bio_advance_iter(dst, dst_iter, bytes);
}
--
2.17.0