diff mbox

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

Message ID 20180509013358.16399-8-kent.overstreet@gmail.com (mailing list archive)
State New, archived
Headers show

Commit Message

Kent Overstreet May 9, 2018, 1:33 a.m. UTC 
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 mbox

Patch

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);
 	}