From: Mariusz Dabrowski <mariusz.dabrowski@intel.com>
Date: Wed, 14 Feb 2018 13:23:30 +0000 (+0100)
Subject: raid1: copy write hint from master bio to behind bio
X-Git-Tag: v4.17-rc2~17^2
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=dba40d46ebf41e3f7ac9480609529bb6037a918d;p=thirdparty%2Flinux.git

raid1: copy write hint from master bio to behind bio

Signed-off-by: Mariusz Dabrowski <mariusz.dabrowski@intel.com>
Reviewed-by: Artur Paszkiewicz <artur.paszkiewicz@intel.com>
Reviewed-by: Pawel Baldysiak <pawel.baldysiak@intel.com>
Signed-off-by: Shaohua Li <shli@fb.com>
---

diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index 6f624311cec22..e9e3308cb0a75 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -1102,6 +1102,8 @@ static void alloc_behind_master_bio(struct r1bio *r1_bio,
 		goto skip_copy;
 	}
 
+	behind_bio->bi_write_hint = bio->bi_write_hint;
+
 	while (i < vcnt && size) {
 		struct page *page;
 		int len = min_t(int, PAGE_SIZE, size);