Since a bio can point to userspace pages (e.g. direct IO), this is generally necessary. Signed-off-by: Kent Overstreet <kent.overstreet@xxxxxxxxx> --- 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
