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authorNeilBrown <neilb@suse.de>2007-09-25 12:35:59 +0200
committerJens Axboe <axboe@carl.home.kernel.dk>2007-10-10 09:25:56 +0200
commit5705f7021748a69d84d6567e68e8851dab551464 (patch)
tree5a6dbc8fc6055c0334f4a97540e36a7844b9c482 /drivers/block/ps3disk.c
parent9dfa52831e96194b8649613e3131baa2c109f7dc (diff)
downloadop-kernel-dev-5705f7021748a69d84d6567e68e8851dab551464.zip
op-kernel-dev-5705f7021748a69d84d6567e68e8851dab551464.tar.gz
Introduce rq_for_each_segment replacing rq_for_each_bio
Every usage of rq_for_each_bio wraps a usage of bio_for_each_segment, so these can be combined into rq_for_each_segment. We define "struct req_iterator" to hold the 'bio' and 'index' that are needed for the double iteration. Signed-off-by: Neil Brown <neilb@suse.de> Various compile fixes by me... Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'drivers/block/ps3disk.c')
-rw-r--r--drivers/block/ps3disk.c31
1 files changed, 16 insertions, 15 deletions
diff --git a/drivers/block/ps3disk.c b/drivers/block/ps3disk.c
index aa8b890..8953e7c 100644
--- a/drivers/block/ps3disk.c
+++ b/drivers/block/ps3disk.c
@@ -91,30 +91,30 @@ static void ps3disk_scatter_gather(struct ps3_storage_device *dev,
struct request *req, int gather)
{
unsigned int offset = 0;
- struct bio *bio;
- sector_t sector;
+ struct req_iterator iter;
struct bio_vec *bvec;
- unsigned int i = 0, j;
+ unsigned int i = 0;
size_t size;
void *buf;
- rq_for_each_bio(bio, req) {
- sector = bio->bi_sector;
+ rq_for_each_segment(bvec, req, iter) {
+ unsigned long flags;
dev_dbg(&dev->sbd.core,
"%s:%u: bio %u: %u segs %u sectors from %lu\n",
- __func__, __LINE__, i, bio_segments(bio),
- bio_sectors(bio), sector);
- bio_for_each_segment(bvec, bio, j) {
+ __func__, __LINE__, i, bio_segments(iter.bio),
+ bio_sectors(iter.bio),
+ (unsigned long)iter.bio->bi_sector);
+
size = bvec->bv_len;
- buf = __bio_kmap_atomic(bio, j, KM_IRQ0);
+ buf = bvec_kmap_irq(bvec, &flags);
if (gather)
memcpy(dev->bounce_buf+offset, buf, size);
else
memcpy(buf, dev->bounce_buf+offset, size);
offset += size;
- flush_kernel_dcache_page(bio_iovec_idx(bio, j)->bv_page);
- __bio_kunmap_atomic(bio, KM_IRQ0);
- }
+ flush_kernel_dcache_page(bvec->bv_page);
+ bvec_kunmap_irq(bvec, &flags);
+
i++;
}
}
@@ -130,12 +130,13 @@ static int ps3disk_submit_request_sg(struct ps3_storage_device *dev,
#ifdef DEBUG
unsigned int n = 0;
- struct bio *bio;
+ struct bio_vec *bv;
+ struct req_iterator iter;
- rq_for_each_bio(bio, req)
+ rq_for_each_segment(bv, req, iter)
n++;
dev_dbg(&dev->sbd.core,
- "%s:%u: %s req has %u bios for %lu sectors %lu hard sectors\n",
+ "%s:%u: %s req has %u bvecs for %lu sectors %lu hard sectors\n",
__func__, __LINE__, op, n, req->nr_sectors,
req->hard_nr_sectors);
#endif
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