diff options
| author | Tejun Heo <tj@kernel.org> | 2009-05-07 17:24:42 +0400 |
|---|---|---|
| committer | Jens Axboe <jens.axboe@oracle.com> | 2009-05-11 11:50:55 +0400 |
| commit | b0790410300abaaf4f25f702803beff701baebf1 (patch) | |
| tree | 63d8fcd38e4cd5927fd83e482e306480bb68a689 /drivers/scsi/scsi_lib.c | |
| parent | 2e46e8b27aa57c6bd34b3102b40ee4d0144b4fab (diff) | |
| download | linux-b0790410300abaaf4f25f702803beff701baebf1.tar.xz | |
block: cleanup rq->data_len usages
With recent unification of fields, it's now guaranteed that
rq->data_len always equals blk_rq_bytes(). Convert all non-IDE direct
users to accessors. IDE will be converted in a separate patch.
Boaz: spotted incorrect data_len/resid_len conversion in osd.
[ Impact: convert direct rq->data_len usages to blk_rq_bytes() ]
Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: Pete Zaitcev <zaitcev@redhat.com>
Cc: Eric Moore <Eric.Moore@lsi.com>
Cc: Markus Lidel <Markus.Lidel@shadowconnect.com>
Cc: Darrick J. Wong <djwong@us.ibm.com>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Cc: Eric Moore <Eric.Moore@lsi.com>
Cc: Boaz Harrosh <bharrosh@panasas.com>
Cc: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'drivers/scsi/scsi_lib.c')
| -rw-r--r-- | drivers/scsi/scsi_lib.c | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index 39b3acfc0ddf..3d16c70fbde0 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -682,14 +682,13 @@ EXPORT_SYMBOL(scsi_release_buffers); static void scsi_end_bidi_request(struct scsi_cmnd *cmd) { struct request *req = cmd->request; - unsigned int dlen = req->data_len; - unsigned int next_dlen = req->next_rq->data_len; req->resid_len = scsi_out(cmd)->resid; req->next_rq->resid_len = scsi_in(cmd)->resid; /* The req and req->next_rq have not been completed */ - BUG_ON(blk_end_bidi_request(req, 0, dlen, next_dlen)); + BUG_ON(blk_end_bidi_request(req, 0, blk_rq_bytes(req), + blk_rq_bytes(req->next_rq))); scsi_release_buffers(cmd); @@ -966,7 +965,7 @@ static int scsi_init_sgtable(struct request *req, struct scsi_data_buffer *sdb, BUG_ON(count > sdb->table.nents); sdb->table.nents = count; if (blk_pc_request(req)) - sdb->length = req->data_len; + sdb->length = blk_rq_bytes(req); else sdb->length = blk_rq_sectors(req) << 9; return BLKPREP_OK; @@ -1087,21 +1086,21 @@ int scsi_setup_blk_pc_cmnd(struct scsi_device *sdev, struct request *req) if (unlikely(ret)) return ret; } else { - BUG_ON(req->data_len); + BUG_ON(blk_rq_bytes(req)); memset(&cmd->sdb, 0, sizeof(cmd->sdb)); req->buffer = NULL; } cmd->cmd_len = req->cmd_len; - if (!req->data_len) + if (!blk_rq_bytes(req)) cmd->sc_data_direction = DMA_NONE; else if (rq_data_dir(req) == WRITE) cmd->sc_data_direction = DMA_TO_DEVICE; else cmd->sc_data_direction = DMA_FROM_DEVICE; - cmd->transfersize = req->data_len; + cmd->transfersize = blk_rq_bytes(req); cmd->allowed = req->retries; return BLKPREP_OK; } |