block: Add bio_end_sector()

Just a little convenience macro - main reason to add it now is preparing
for immutable bio vecs, it'll reduce the size of the patch that puts
bi_sector/bi_size/bi_idx into a struct bvec_iter.

Signed-off-by: Kent Overstreet <koverstreet@google.com>
CC: Jens Axboe <axboe@kernel.dk>
CC: Lars Ellenberg <drbd-dev@lists.linbit.com>
CC: Jiri Kosina <jkosina@suse.cz>
CC: Alasdair Kergon <agk@redhat.com>
CC: dm-devel@redhat.com
CC: Neil Brown <neilb@suse.de>
CC: Martin Schwidefsky <schwidefsky@de.ibm.com>
CC: Heiko Carstens <heiko.carstens@de.ibm.com>
CC: linux-s390@vger.kernel.org
CC: Chris Mason <chris.mason@fusionio.com>
CC: Steven Whitehouse <swhiteho@redhat.com>
Acked-by: Steven Whitehouse <swhiteho@redhat.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c
index 2e7de7a59bfc..26938e8e2fc3 100644
--- a/drivers/block/pktcdvd.c
+++ b/drivers/block/pktcdvd.c
@@ -901,7 +901,7 @@ static void pkt_iosched_process_queue(struct pktcdvd_device *pd)
                         pd->iosched.successive_reads += bio->bi_size >> 10;
                 else {
                         pd->iosched.successive_reads = 0;
-                        pd->iosched.last_write = bio->bi_sector + bio_sectors(bio);
+                        pd->iosched.last_write = bio_end_sector(bio);
                 }
                 if (pd->iosched.successive_reads >= HI_SPEED_SWITCH) {
                         if (pd->read_speed == pd->write_speed) {
@@ -2454,7 +2454,7 @@ static void pkt_make_request(struct request_queue *q, struct bio *bio)
         zone = ZONE(bio->bi_sector, pd);
         VPRINTK("pkt_make_request: start = %6llx stop = %6llx\n",
                 (unsigned long long)bio->bi_sector,
-                (unsigned long long)(bio->bi_sector + bio_sectors(bio)));
+                (unsigned long long)bio_end_sector(bio));
 
         /* Check if we have to split the bio */
         {
@@ -2462,7 +2462,7 @@ static void pkt_make_request(struct request_queue *q, struct bio *bio)
                 sector_t last_zone;
                 int first_sectors;
 
-                last_zone = ZONE(bio->bi_sector + bio_sectors(bio) - 1, pd);
+                last_zone = ZONE(bio_end_sector(bio) - 1, pd);
                 if (last_zone != zone) {
                         BUG_ON(last_zone != zone + pd->settings.size);
                         first_sectors = last_zone - bio->bi_sector;