From dba40d46ebf41e3f7ac9480609529bb6037a918d Mon Sep 17 00:00:00 2001
From: Mariusz Dabrowski <mariusz.dabrowski@intel.com>
Date: Wed, 14 Feb 2018 14:23:30 +0100
Subject: [PATCH] raid1: copy write hint from master bio to behind bio
Git-commit: dba40d46ebf41e3f7ac9480609529bb6037a918d
Patch-mainline: v4.17-rc2
References: bsc#1093023
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>
Signed-off-by: Coly Li <colyli@suse.de>
---
drivers/md/raid1.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index 6f624311cec2..e9e3308cb0a7 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);
--
2.16.3