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block: Add bio_end_sector()

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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>
This commit is contained in:
Kent Overstreet
2012-09-25 15:05:12 -07:00
parent fb9e353476
commit f73a1c7d11
15 changed files with 26 additions and 34 deletions
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6
drivers/block/pktcdvd.c
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@@ -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;