diff options
| author | NeilBrown <neilb@suse.de> | 2007-09-25 14:35:59 +0400 |
|---|---|---|
| committer | Jens Axboe <axboe@carl.home.kernel.dk> | 2007-10-10 11:25:56 +0400 |
| commit | 5705f7021748a69d84d6567e68e8851dab551464 (patch) | |
| tree | 5a6dbc8fc6055c0334f4a97540e36a7844b9c482 /drivers/s390/block/dasd_fba.c | |
| parent | 9dfa52831e96194b8649613e3131baa2c109f7dc (diff) | |
| download | linux-5705f7021748a69d84d6567e68e8851dab551464.tar.xz | |
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/s390/block/dasd_fba.c')
| -rw-r--r-- | drivers/s390/block/dasd_fba.c | 15 |
1 files changed, 6 insertions, 9 deletions
diff --git a/drivers/s390/block/dasd_fba.c b/drivers/s390/block/dasd_fba.c index da16ead8aff2..119b8d2d5f17 100644 --- a/drivers/s390/block/dasd_fba.c +++ b/drivers/s390/block/dasd_fba.c @@ -234,14 +234,13 @@ dasd_fba_build_cp(struct dasd_device * device, struct request *req) struct LO_fba_data *LO_data; struct dasd_ccw_req *cqr; struct ccw1 *ccw; - struct bio *bio; + struct req_iterator iter; struct bio_vec *bv; char *dst; int count, cidaw, cplength, datasize; sector_t recid, first_rec, last_rec; unsigned int blksize, off; unsigned char cmd; - int i; private = (struct dasd_fba_private *) device->private; if (rq_data_dir(req) == READ) { @@ -257,8 +256,7 @@ dasd_fba_build_cp(struct dasd_device * device, struct request *req) /* Check struct bio and count the number of blocks for the request. */ count = 0; cidaw = 0; - rq_for_each_bio(bio, req) { - bio_for_each_segment(bv, bio, i) { + rq_for_each_segment(bv, req, iter) { if (bv->bv_len & (blksize - 1)) /* Fba can only do full blocks. */ return ERR_PTR(-EINVAL); @@ -268,7 +266,6 @@ dasd_fba_build_cp(struct dasd_device * device, struct request *req) bv->bv_len)) cidaw += bv->bv_len / blksize; #endif - } } /* Paranoia. */ if (count != last_rec - first_rec + 1) @@ -304,7 +301,7 @@ dasd_fba_build_cp(struct dasd_device * device, struct request *req) locate_record(ccw++, LO_data++, rq_data_dir(req), 0, count); } recid = first_rec; - rq_for_each_bio(bio, req) bio_for_each_segment(bv, bio, i) { + rq_for_each_segment(bv, req, iter) { dst = page_address(bv->bv_page) + bv->bv_offset; if (dasd_page_cache) { char *copy = kmem_cache_alloc(dasd_page_cache, @@ -359,11 +356,11 @@ dasd_fba_free_cp(struct dasd_ccw_req *cqr, struct request *req) { struct dasd_fba_private *private; struct ccw1 *ccw; - struct bio *bio; + struct req_iterator iter; struct bio_vec *bv; char *dst, *cda; unsigned int blksize, off; - int i, status; + int status; if (!dasd_page_cache) goto out; @@ -374,7 +371,7 @@ dasd_fba_free_cp(struct dasd_ccw_req *cqr, struct request *req) ccw++; if (private->rdc_data.mode.bits.data_chain != 0) ccw++; - rq_for_each_bio(bio, req) bio_for_each_segment(bv, bio, i) { + rq_for_each_segment(bv, req, iter) { dst = page_address(bv->bv_page) + bv->bv_offset; for (off = 0; off < bv->bv_len; off += blksize) { /* Skip locate record. */ |