dm vdo io-submitter: remove get_bio_sector

Just open-code access to bio's sector.
Reviewed-by: Susan LeGendre-McGhee <slegendr@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
Signed-off-by: Matthew Sakai <msakai@redhat.com>

drivers/md/dm-vdo/io-submitter.c

@@ -115,11 +115,6 @@ static void send_bio_to_device(struct vio *vio, struct bio *bio)
 	submit_bio_noacct(bio);
 }
 
-static sector_t get_bio_sector(struct bio *bio)
-{
-	return bio->bi_iter.bi_sector;
-}
-
 /**
  * process_vio_io() - Submits a vio's bio to the underlying block device. May block if the device
  *                    is busy. This callback should be used by vios which did not attempt to merge.
@@ -149,8 +144,10 @@ static struct bio *get_bio_list(struct vio *vio)
 	assert_in_bio_zone(vio);
 
 	mutex_lock(&bio_queue_data->lock);
-	vdo_int_map_remove(bio_queue_data->map, get_bio_sector(vio->bios_merged.head));
-	vdo_int_map_remove(bio_queue_data->map, get_bio_sector(vio->bios_merged.tail));
+	vdo_int_map_remove(bio_queue_data->map,
+			   vio->bios_merged.head->bi_iter.bi_sector);
+	vdo_int_map_remove(bio_queue_data->map,
+			   vio->bios_merged.tail->bi_iter.bi_sector);
 	bio = vio->bios_merged.head;
 	bio_list_init(&vio->bios_merged);
 	mutex_unlock(&bio_queue_data->lock);
@@ -193,7 +190,7 @@ static struct vio *get_mergeable_locked(struct int_map *map, struct vio *vio,
 					bool back_merge)
 {
 	struct bio *bio = vio->bio;
-	sector_t merge_sector = get_bio_sector(bio);
+	sector_t merge_sector = bio->bi_iter.bi_sector;
 	struct vio *vio_merge;
 
 	if (back_merge)
@@ -216,31 +213,32 @@ static struct vio *get_mergeable_locked(struct int_map *map, struct vio *vio,
 		return NULL;
 
 	if (back_merge) {
-		return (get_bio_sector(vio_merge->bios_merged.tail) == merge_sector ?
+		return (vio_merge->bios_merged.tail->bi_iter.bi_sector == merge_sector ?
 			vio_merge : NULL);
 	}
 
-	return (get_bio_sector(vio_merge->bios_merged.head) == merge_sector ?
+	return (vio_merge->bios_merged.head->bi_iter.bi_sector == merge_sector ?
 		vio_merge : NULL);
 }
 
 static int map_merged_vio(struct int_map *bio_map, struct vio *vio)
 {
 	int result;
+	sector_t bio_sector;
 
-	result = vdo_int_map_put(bio_map, get_bio_sector(vio->bios_merged.head), vio,
-				 true, NULL);
+	bio_sector = vio->bios_merged.head->bi_iter.bi_sector;
+	result = vdo_int_map_put(bio_map, bio_sector, vio, true, NULL);
 	if (result != VDO_SUCCESS)
 		return result;
 
-	return vdo_int_map_put(bio_map, get_bio_sector(vio->bios_merged.tail), vio, true,
-			       NULL);
+	bio_sector = vio->bios_merged.tail->bi_iter.bi_sector;
+	return vdo_int_map_put(bio_map, bio_sector, vio, true, NULL);
 }
 
 static int merge_to_prev_tail(struct int_map *bio_map, struct vio *vio,
 			      struct vio *prev_vio)
 {
-	vdo_int_map_remove(bio_map, get_bio_sector(prev_vio->bios_merged.tail));
+	vdo_int_map_remove(bio_map, prev_vio->bios_merged.tail->bi_iter.bi_sector);
 	bio_list_merge(&prev_vio->bios_merged, &vio->bios_merged);
 	return map_merged_vio(bio_map, prev_vio);
 }
@@ -253,7 +251,7 @@ static int merge_to_next_head(struct int_map *bio_map, struct vio *vio,
 	 * that's compatible with using funnel queues in work queues. This avoids removing an
 	 * existing completion.
 	 */
-	vdo_int_map_remove(bio_map, get_bio_sector(next_vio->bios_merged.head));
+	vdo_int_map_remove(bio_map, next_vio->bios_merged.head->bi_iter.bi_sector);
 	bio_list_merge_head(&next_vio->bios_merged, &vio->bios_merged);
 	return map_merged_vio(bio_map, next_vio);
 }
@@ -290,7 +288,7 @@ static bool try_bio_map_merge(struct vio *vio)
 		/* no merge. just add to bio_queue */
 		merged = false;
 		result = vdo_int_map_put(bio_queue_data->map,
-					 get_bio_sector(bio),
+					 bio->bi_iter.bi_sector,
 					 vio, true, NULL);
 	} else if (next_vio == NULL) {
 		/* Only prev. merge to prev's tail */
@@ -299,7 +297,6 @@ static bool try_bio_map_merge(struct vio *vio)
 		/* Only next. merge to next's head */
 		result = merge_to_next_head(bio_queue_data->map, vio, next_vio);
 	}
-
 	mutex_unlock(&bio_queue_data->lock);
 
 	/* We don't care about failure of int_map_put in this case. */