raid1: copy write hint from master bio to behind bio

mdabrows · shligit · commit dba40d46ebf4 · 2018-04-09T08:54:34.000-07:00
Signed-off-by: Mariusz Dabrowski &lt;mariusz.dabrowski@intel.com&gt;
Reviewed-by: Artur Paszkiewicz &lt;artur.paszkiewicz@intel.com&gt;
Reviewed-by: Pawel Baldysiak &lt;pawel.baldysiak@intel.com&gt;
Signed-off-by: Shaohua Li &lt;shli@fb.com&gt;
diff --git 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);

Original file line number	Diff line number	Diff line change
`@@ -1102,6 +1102,8 @@ static void alloc_behind_master_bio(struct r1bio *r1_bio,`
`1102`	`1102`	`goto skip_copy;`
`1103`	`1103`	`}`
`1104`	`1104`
	`1105`	`+ behind_bio->bi_write_hint = bio->bi_write_hint;`
	`1106`	`+`
`1105`	`1107`	`while (i < vcnt && size) {`
`1106`	`1108`	`struct page *page;`
`1107`	`1109`	`int len = min_t(int, PAGE_SIZE, size);`