md/raid1/ avoid bio search in end_sync_read()

We know which device we just read from so we don't need to
search the bios to find out.  Just use ->read_disk.

Signed-off-by: NeilBrown <neilb@suse.de>

diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index a0c02fb8af2ad55d6ed033f07373f8b2732b6db2..77fab07abcee92607688bd4dcc945b5231776ed3 100644 (file)
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -1358,8 +1358,7 @@ static void end_sync_read(struct bio *bio, int error)
 {
        r1bio_t *r1_bio = bio->bi_private;
 
-       /* this will call update_head_pos() */
-       find_bio_disk(r1_bio, bio);
+       update_head_pos(r1_bio->read_disk, r1_bio);
 
        /*
         * we have read a block, now it needs to be re-written,