From 6e6e811d747bfe40228dc72309450803ef74d380 Mon Sep 17 00:00:00 2001
From: Kent Overstreet <kent.overstreet@gmail.com>
Date: Tue, 8 May 2018 21:33:55 -0400
Subject: [PATCH] block: Add missing flush_dcache_page() call
Git-commit: 6e6e811d747bfe40228dc72309450803ef74d380
References: bsc#1111974
Patch-mainline: v4.18-rc1
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>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Coly Li <colyli@suse.de>
---
block/bio.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/block/bio.c b/block/bio.c
index 858f56f3edcb..2112ad01b52c 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);
}
--
2.19.0