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| author | NeilBrown <neilb@suse.de> | 2007-09-25 12:35:59 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@carl.home.kernel.dk> | 2007-10-10 09:25:56 +0200 |
| commit | 5705f7021748a69d84d6567e68e8851dab551464 (patch) | |
| tree | 5a6dbc8fc6055c0334f4a97540e36a7844b9c482 /drivers/s390/char/tape_34xx.c | |
| parent | Merge blk_recount_segments into blk_recalc_rq_segments (diff) | |
| download | linux-5705f7021748a69d84d6567e68e8851dab551464.tar.xz linux-5705f7021748a69d84d6567e68e8851dab551464.zip | |
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/char/tape_34xx.c')
| -rw-r--r-- | drivers/s390/char/tape_34xx.c | 15 |
1 files changed, 5 insertions, 10 deletions
diff --git a/drivers/s390/char/tape_34xx.c b/drivers/s390/char/tape_34xx.c index 80e7a537e7d2..ea3e6a345c89 100644 --- a/drivers/s390/char/tape_34xx.c +++ b/drivers/s390/char/tape_34xx.c @@ -1134,21 +1134,18 @@ tape_34xx_bread(struct tape_device *device, struct request *req) { struct tape_request *request; struct ccw1 *ccw; - int count = 0, i; + int count = 0; unsigned off; char *dst; struct bio_vec *bv; - struct bio *bio; + struct req_iterator iter; struct tape_34xx_block_id * start_block; DBF_EVENT(6, "xBREDid:"); /* Count the number of blocks for the request. */ - rq_for_each_bio(bio, req) { - bio_for_each_segment(bv, bio, i) { - count += bv->bv_len >> (TAPEBLOCK_HSEC_S2B + 9); - } - } + rq_for_each_segment(bv, req, iter) + count += bv->bv_len >> (TAPEBLOCK_HSEC_S2B + 9); /* Allocate the ccw request. */ request = tape_alloc_request(3+count+1, 8); @@ -1175,8 +1172,7 @@ tape_34xx_bread(struct tape_device *device, struct request *req) ccw = tape_ccw_cc(ccw, NOP, 0, NULL); ccw = tape_ccw_cc(ccw, NOP, 0, NULL); - rq_for_each_bio(bio, req) { - bio_for_each_segment(bv, bio, i) { + rq_for_each_segment(bv, req, iter) { dst = kmap(bv->bv_page) + bv->bv_offset; for (off = 0; off < bv->bv_len; off += TAPEBLOCK_HSEC_SIZE) { @@ -1187,7 +1183,6 @@ tape_34xx_bread(struct tape_device *device, struct request *req) ccw++; dst += TAPEBLOCK_HSEC_SIZE; } - } } ccw = tape_ccw_end(ccw, NOP, 0, NULL); |