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raid5-cache: take rdev->data_offset into account early on 

Set up bi_sector properly when we allocate an bio instead of updating it
at submission time.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: NeilBrown <neilb@suse.com>
This commit is contained in:
Christoph Hellwig 2015-10-05 09:31:12 +02:00 committed by NeilBrown
parent b349feb36c
commit 1e932a37cc
1 changed files with 2 additions and 5 deletions
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7
drivers/md/raid5-cache.c
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@ -269,11 +269,8 @@ static void r5l_submit_current_io(struct r5l_log *log)
__r5l_set_io_unit_state(io, IO_UNIT_IO_START);
spin_unlock_irqrestore(&log->io_list_lock, flags);
while ((bio = bio_list_pop(&io->bios))) {
/* all IO must start from rdev->data_offset */
bio->bi_iter.bi_sector += log->rdev->data_offset;
while ((bio = bio_list_pop(&io->bios)))
submit_bio(WRITE, bio);
}
}
static struct bio *r5l_bio_alloc(struct r5l_log *log, struct r5l_io_unit *io)
@ -282,7 +279,7 @@ static struct bio *r5l_bio_alloc(struct r5l_log *log, struct r5l_io_unit *io)
bio->bi_rw = WRITE;
bio->bi_bdev = log->rdev->bdev;
bio->bi_iter.bi_sector = log->log_start;
bio->bi_iter.bi_sector = log->rdev->data_offset + log->log_start;
bio->bi_end_io = r5l_log_endio;
bio->bi_private = io;