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ps3disk: use memcpy_{from,to}_bvec

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Use the bvec helpers instead of open coding the copy.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Tested-by: Geoff Levand <geoff@infradead.org>
Link: https://lore.kernel.org/r/20210727055646.118787-9-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2021-07-27 07:56:39 +02:00 committed by Jens Axboe
parent 18a6234ccf
commit 6e0a48552b
1 changed files with 2 additions and 16 deletions
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18
drivers/block/ps3disk.c
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@ -83,26 +83,12 @@ static void ps3disk_scatter_gather(struct ps3_storage_device *dev,
unsigned int offset = 0;
struct req_iterator iter;
struct bio_vec bvec;
unsigned int i = 0;
size_t size;
void *buf;
rq_for_each_segment(bvec, req, iter) {
unsigned long flags;
dev_dbg(&dev->sbd.core, "%s:%u: bio %u: %u sectors from %llu\n",
__func__, __LINE__, i, bio_sectors(iter.bio),
iter.bio->bi_iter.bi_sector);
size = bvec.bv_len;
buf = bvec_kmap_irq(&bvec, &flags);
if (gather)
memcpy(dev->bounce_buf+offset, buf, size);
memcpy_from_bvec(dev->bounce_buf + offset, &bvec);
else
memcpy(buf, dev->bounce_buf+offset, size);
offset += size;
flush_kernel_dcache_page(bvec.bv_page);
bvec_kunmap_irq(buf, &flags);
i++;
memcpy_to_bvec(&bvec, dev->bounce_buf + offset);
}
}