Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757078AbZD2JVU (ORCPT ); Wed, 29 Apr 2009 05:21:20 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753612AbZD2JTD (ORCPT ); Wed, 29 Apr 2009 05:19:03 -0400 Received: from hera.kernel.org ([140.211.167.34]:56421 "EHLO hera.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754550AbZD2JSo (ORCPT ); Wed, 29 Apr 2009 05:18:44 -0400 From: Tejun Heo To: axboe@kernel.dk, linux-kernel@vger.kernel.org, jeff@garzik.org, linux-ide@vger.kernel.org, James.Bottomley@HansenPartnership.com, linux-scsi@vger.kernel.org, bzolnier@gmail.com, petkovbb@googlemail.com, sshtylyov@ru.mvista.com, mike.miller@hp.com, chirag.kantharia@hp.com, Eric.Moore@lsi.com, stern@rowland.harvard.edu, fujita.tomonori@lab.ntt.co.jp, zaitcev@redhat.com, Geert.Uytterhoeven@sonycom.com, sfr@canb.auug.org.au, grant.likely@secretlab.ca, paul.clements@steeleye.com, jesper.juhl@gmail.com, tim@cyberelk.net, jeremy@xensource.com, adrian@mcmen.demon.co.uk, oakad@yahoo.com, dwmw2@infradead.org, schwidefsky@de.ibm.com, ballabio_dario@emc.com, davem@davemloft.net, rusty@rustcorp.com.au, Markus.Lidel@shadowconnect.com, bharrosh@panasas.com Cc: Tejun Heo , "Darrick J. Wong" Subject: [PATCH 08/10] block: cleanup rq->data_len usages Date: Wed, 29 Apr 2009 18:13:46 +0900 Message-Id: <1240996428-10159-9-git-send-email-tj@kernel.org> X-Mailer: git-send-email 1.6.0.2 In-Reply-To: <1240996428-10159-1-git-send-email-tj@kernel.org> References: <1240996428-10159-1-git-send-email-tj@kernel.org> X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.0 (hera.kernel.org [127.0.0.1]); Wed, 29 Apr 2009 09:14:07 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 17044 Lines: 435 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. [ Impact: convert direct rq->data_len usages to blk_rq_bytes() ] Signed-off-by: Tejun Heo Cc: Pete Zaitcev Cc: Eric Moore Cc: Markus Lidel Cc: Darrick J. Wong Cc: James Bottomley Cc: Eric Moore Cc: Boaz Harrosh Cc: FUJITA Tomonori --- drivers/ata/libata-scsi.c | 2 +- drivers/block/ub.c | 8 ++++---- drivers/message/fusion/mptsas.c | 20 ++++++++++---------- drivers/message/i2o/i2o_block.c | 2 +- drivers/scsi/libsas/sas_expander.c | 8 ++++---- drivers/scsi/libsas/sas_host_smp.c | 18 +++++++++--------- drivers/scsi/mpt2sas/mpt2sas_transport.c | 21 +++++++++++---------- drivers/scsi/osd/osd_initiator.c | 4 ++-- drivers/scsi/scsi_lib.c | 13 ++++++------- drivers/scsi/scsi_tgt_lib.c | 2 +- fs/exofs/osd.c | 4 ++-- 11 files changed, 51 insertions(+), 51 deletions(-) diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c index 2733b0c..6e4c600 100644 --- a/drivers/ata/libata-scsi.c +++ b/drivers/ata/libata-scsi.c @@ -1084,7 +1084,7 @@ static int atapi_drain_needed(struct request *rq) if (likely(!blk_pc_request(rq))) return 0; - if (!rq->data_len || (rq->cmd_flags & REQ_RW)) + if (!blk_rq_bytes(rq) || (rq->cmd_flags & REQ_RW)) return 0; return atapi_cmd_type(rq->cmd[0]) == ATAPI_MISC; diff --git a/drivers/block/ub.c b/drivers/block/ub.c index dc3b899..1591f61 100644 --- a/drivers/block/ub.c +++ b/drivers/block/ub.c @@ -747,7 +747,7 @@ static void ub_cmd_build_packet(struct ub_dev *sc, struct ub_lun *lun, { struct request *rq = urq->rq; - if (rq->data_len == 0) { + if (blk_rq_bytes(rq) == 0) { cmd->dir = UB_DIR_NONE; } else { if (rq_data_dir(rq) == WRITE) @@ -762,7 +762,7 @@ static void ub_cmd_build_packet(struct ub_dev *sc, struct ub_lun *lun, memcpy(&cmd->cdb, rq->cmd, rq->cmd_len); cmd->cdb_len = rq->cmd_len; - cmd->len = rq->data_len; + cmd->len = blk_rq_bytes(rq); /* * To reapply this to every URB is not as incorrect as it looks. @@ -783,8 +783,8 @@ static void ub_rw_cmd_done(struct ub_dev *sc, struct ub_scsi_cmd *cmd) if (cmd->error == 0) { if (blk_pc_request(rq)) { - if (cmd->act_len < rq->data_len) - rq->resid_len = rq->data_len - cmd->act_len; + if (cmd->act_len < blk_rq_bytes(rq)) + rq->resid_len = blk_rq_bytes(rq) - cmd->act_len; scsi_status = 0; } else { if (cmd->act_len != cmd->len) { diff --git a/drivers/message/fusion/mptsas.c b/drivers/message/fusion/mptsas.c index 5d5f347..4e6fcf0 100644 --- a/drivers/message/fusion/mptsas.c +++ b/drivers/message/fusion/mptsas.c @@ -1277,8 +1277,8 @@ static int mptsas_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy, /* do we need to support multiple segments? */ if (req->bio->bi_vcnt > 1 || rsp->bio->bi_vcnt > 1) { printk(MYIOC_s_ERR_FMT "%s: multiple segments req %u %u, rsp %u %u\n", - ioc->name, __func__, req->bio->bi_vcnt, req->data_len, - rsp->bio->bi_vcnt, rsp->data_len); + ioc->name, __func__, req->bio->bi_vcnt, blk_rq_bytes(req), + rsp->bio->bi_vcnt, blk_rq_bytes(rsp)); return -EINVAL; } @@ -1295,7 +1295,7 @@ static int mptsas_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy, smpreq = (SmpPassthroughRequest_t *)mf; memset(smpreq, 0, sizeof(*smpreq)); - smpreq->RequestDataLength = cpu_to_le16(req->data_len - 4); + smpreq->RequestDataLength = cpu_to_le16(blk_rq_bytes(req) - 4); smpreq->Function = MPI_FUNCTION_SMP_PASSTHROUGH; if (rphy) @@ -1321,10 +1321,10 @@ static int mptsas_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy, MPI_SGE_FLAGS_END_OF_BUFFER | MPI_SGE_FLAGS_DIRECTION | mpt_addr_size()) << MPI_SGE_FLAGS_SHIFT; - flagsLength |= (req->data_len - 4); + flagsLength |= (blk_rq_bytes(req) - 4); dma_addr_out = pci_map_single(ioc->pcidev, bio_data(req->bio), - req->data_len, PCI_DMA_BIDIRECTIONAL); + blk_rq_bytes(req), PCI_DMA_BIDIRECTIONAL); if (!dma_addr_out) goto put_mf; mpt_add_sge(psge, flagsLength, dma_addr_out); @@ -1332,9 +1332,9 @@ static int mptsas_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy, /* response */ flagsLength = MPT_SGE_FLAGS_SSIMPLE_READ; - flagsLength |= rsp->data_len + 4; + flagsLength |= blk_rq_bytes(rsp) + 4; dma_addr_in = pci_map_single(ioc->pcidev, bio_data(rsp->bio), - rsp->data_len, PCI_DMA_BIDIRECTIONAL); + blk_rq_bytes(rsp), PCI_DMA_BIDIRECTIONAL); if (!dma_addr_in) goto unmap; mpt_add_sge(psge, flagsLength, dma_addr_in); @@ -1357,7 +1357,7 @@ static int mptsas_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy, smprep = (SmpPassthroughReply_t *)ioc->sas_mgmt.reply; memcpy(req->sense, smprep, sizeof(*smprep)); req->sense_len = sizeof(*smprep); - rsp->resid_len = rsp->data_len - smprep->ResponseDataLength; + rsp->resid_len = blk_rq_bytes(rsp) - smprep->ResponseDataLength; } else { printk(MYIOC_s_ERR_FMT "%s: smp passthru reply failed to be returned\n", ioc->name, __func__); @@ -1365,10 +1365,10 @@ static int mptsas_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy, } unmap: if (dma_addr_out) - pci_unmap_single(ioc->pcidev, dma_addr_out, req->data_len, + pci_unmap_single(ioc->pcidev, dma_addr_out, blk_rq_bytes(req), PCI_DMA_BIDIRECTIONAL); if (dma_addr_in) - pci_unmap_single(ioc->pcidev, dma_addr_in, rsp->data_len, + pci_unmap_single(ioc->pcidev, dma_addr_in, blk_rq_bytes(rsp), PCI_DMA_BIDIRECTIONAL); put_mf: if (mf) diff --git a/drivers/message/i2o/i2o_block.c b/drivers/message/i2o/i2o_block.c index 510eb47..6b61d28 100644 --- a/drivers/message/i2o/i2o_block.c +++ b/drivers/message/i2o/i2o_block.c @@ -430,7 +430,7 @@ static void i2o_block_end_request(struct request *req, int error, int leftover = (blk_rq_sectors(req) << KERNEL_SECTOR_SHIFT); if (blk_pc_request(req)) - leftover = req->data_len; + leftover = blk_rq_bytes(req); if (error) blk_end_request(req, -EIO, leftover); diff --git a/drivers/scsi/libsas/sas_expander.c b/drivers/scsi/libsas/sas_expander.c index 6605ec9..531af9e 100644 --- a/drivers/scsi/libsas/sas_expander.c +++ b/drivers/scsi/libsas/sas_expander.c @@ -1927,13 +1927,13 @@ int sas_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy, /* do we need to support multiple segments? */ if (req->bio->bi_vcnt > 1 || rsp->bio->bi_vcnt > 1) { printk("%s: multiple segments req %u %u, rsp %u %u\n", - __func__, req->bio->bi_vcnt, req->data_len, - rsp->bio->bi_vcnt, rsp->data_len); + __func__, req->bio->bi_vcnt, blk_rq_bytes(req), + rsp->bio->bi_vcnt, blk_rq_bytes(rsp)); return -EINVAL; } - ret = smp_execute_task(dev, bio_data(req->bio), req->data_len, - bio_data(rsp->bio), rsp->data_len); + ret = smp_execute_task(dev, bio_data(req->bio), blk_rq_bytes(req), + bio_data(rsp->bio), blk_rq_bytes(rsp)); if (ret > 0) { /* positive number is the untransferred residual */ rsp->resid_len = ret; diff --git a/drivers/scsi/libsas/sas_host_smp.c b/drivers/scsi/libsas/sas_host_smp.c index 89952ed..be9a951 100644 --- a/drivers/scsi/libsas/sas_host_smp.c +++ b/drivers/scsi/libsas/sas_host_smp.c @@ -137,21 +137,21 @@ int sas_smp_host_handler(struct Scsi_Host *shost, struct request *req, int error = -EINVAL; /* eight is the minimum size for request and response frames */ - if (req->data_len < 8 || rsp->data_len < 8) + if (blk_rq_bytes(req) < 8 || blk_rq_bytes(rsp) < 8) goto out; - if (bio_offset(req->bio) + req->data_len > PAGE_SIZE || - bio_offset(rsp->bio) + rsp->data_len > PAGE_SIZE) { + if (bio_offset(req->bio) + blk_rq_bytes(req) > PAGE_SIZE || + bio_offset(rsp->bio) + blk_rq_bytes(rsp) > PAGE_SIZE) { shost_printk(KERN_ERR, shost, "SMP request/response frame crosses page boundary"); goto out; } - req_data = kzalloc(req->data_len, GFP_KERNEL); + req_data = kzalloc(blk_rq_bytes(req), GFP_KERNEL); /* make sure frame can always be built ... we copy * back only the requested length */ - resp_data = kzalloc(max(rsp->data_len, 128U), GFP_KERNEL); + resp_data = kzalloc(max(blk_rq_bytes(rsp), 128U), GFP_KERNEL); if (!req_data || !resp_data) { error = -ENOMEM; @@ -160,7 +160,7 @@ int sas_smp_host_handler(struct Scsi_Host *shost, struct request *req, local_irq_disable(); buf = kmap_atomic(bio_page(req->bio), KM_USER0) + bio_offset(req->bio); - memcpy(req_data, buf, req->data_len); + memcpy(req_data, buf, blk_rq_bytes(req)); kunmap_atomic(buf - bio_offset(req->bio), KM_USER0); local_irq_enable(); @@ -176,8 +176,8 @@ int sas_smp_host_handler(struct Scsi_Host *shost, struct request *req, resp_data[1] = req_data[1]; resp_data[2] = SMP_RESP_FUNC_UNK; - req->resid_len = req->data_len; - rsp->resid_len = rsp->data_len; + req->resid_len = blk_rq_bytes(req); + rsp->resid_len = blk_rq_bytes(rsp); switch (req_data[1]) { case SMP_REPORT_GENERAL: @@ -264,7 +264,7 @@ int sas_smp_host_handler(struct Scsi_Host *shost, struct request *req, local_irq_disable(); buf = kmap_atomic(bio_page(rsp->bio), KM_USER0) + bio_offset(rsp->bio); - memcpy(buf, resp_data, rsp->data_len); + memcpy(buf, resp_data, blk_rq_bytes(rsp)); flush_kernel_dcache_page(bio_page(rsp->bio)); kunmap_atomic(buf - bio_offset(rsp->bio), KM_USER0); local_irq_enable(); diff --git a/drivers/scsi/mpt2sas/mpt2sas_transport.c b/drivers/scsi/mpt2sas/mpt2sas_transport.c index 53759c5..af95a44 100644 --- a/drivers/scsi/mpt2sas/mpt2sas_transport.c +++ b/drivers/scsi/mpt2sas/mpt2sas_transport.c @@ -1041,7 +1041,7 @@ transport_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy, if (req->bio->bi_vcnt > 1 || rsp->bio->bi_vcnt > 1) { printk(MPT2SAS_ERR_FMT "%s: multiple segments req %u %u, " "rsp %u %u\n", ioc->name, __func__, req->bio->bi_vcnt, - req->data_len, rsp->bio->bi_vcnt, rsp->data_len); + blk_rq_bytes(req), rsp->bio->bi_vcnt, blk_rq_bytes(rsp)); return -EINVAL; } @@ -1104,7 +1104,7 @@ transport_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy, *((u64 *)&mpi_request->SASAddress) = (rphy) ? cpu_to_le64(rphy->identify.sas_address) : cpu_to_le64(ioc->sas_hba.sas_address); - mpi_request->RequestDataLength = cpu_to_le16(req->data_len - 4); + mpi_request->RequestDataLength = cpu_to_le16(blk_rq_bytes(req) - 4); psge = &mpi_request->SGL; /* WRITE sgel first */ @@ -1112,13 +1112,13 @@ transport_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy, MPI2_SGE_FLAGS_END_OF_BUFFER | MPI2_SGE_FLAGS_HOST_TO_IOC); sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT; dma_addr_out = pci_map_single(ioc->pdev, bio_data(req->bio), - req->data_len, PCI_DMA_BIDIRECTIONAL); + blk_rq_bytes(req), PCI_DMA_BIDIRECTIONAL); if (!dma_addr_out) { mpt2sas_base_free_smid(ioc, le16_to_cpu(smid)); goto unmap; } - ioc->base_add_sg_single(psge, sgl_flags | (req->data_len - 4), + ioc->base_add_sg_single(psge, sgl_flags | (blk_rq_bytes(req) - 4), dma_addr_out); /* incr sgel */ @@ -1129,14 +1129,14 @@ transport_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy, MPI2_SGE_FLAGS_LAST_ELEMENT | MPI2_SGE_FLAGS_END_OF_BUFFER | MPI2_SGE_FLAGS_END_OF_LIST); sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT; - dma_addr_in = pci_map_single(ioc->pdev, bio_data(rsp->bio), - rsp->data_len, PCI_DMA_BIDIRECTIONAL); + dma_addr_in = pci_map_single(ioc->pdev, bio_data(rsp->bio), + blk_rq_bytes(rsp), PCI_DMA_BIDIRECTIONAL); if (!dma_addr_in) { mpt2sas_base_free_smid(ioc, le16_to_cpu(smid)); goto unmap; } - ioc->base_add_sg_single(psge, sgl_flags | (rsp->data_len + 4), + ioc->base_add_sg_single(psge, sgl_flags | (blk_rq_bytes(rsp) + 4), dma_addr_in); dtransportprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s - " @@ -1170,7 +1170,8 @@ transport_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy, memcpy(req->sense, mpi_reply, sizeof(*mpi_reply)); req->sense_len = sizeof(*mpi_reply); - rsp->resid_len = rsp->data_len - mpi_reply->ResponseDataLength; + rsp->resid_len = blk_rq_bytes(rsp) - + mpi_reply->ResponseDataLength; } else { dtransportprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s - no reply\n", ioc->name, __func__)); @@ -1186,10 +1187,10 @@ transport_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy, unmap: if (dma_addr_out) - pci_unmap_single(ioc->pdev, dma_addr_out, req->data_len, + pci_unmap_single(ioc->pdev, dma_addr_out, blk_rq_bytes(req), PCI_DMA_BIDIRECTIONAL); if (dma_addr_in) - pci_unmap_single(ioc->pdev, dma_addr_in, rsp->data_len, + pci_unmap_single(ioc->pdev, dma_addr_in, blk_rq_bytes(rsp), PCI_DMA_BIDIRECTIONAL); out: diff --git a/drivers/scsi/osd/osd_initiator.c b/drivers/scsi/osd/osd_initiator.c index 2a5f077..d178a8b 100644 --- a/drivers/scsi/osd/osd_initiator.c +++ b/drivers/scsi/osd/osd_initiator.c @@ -1299,7 +1299,7 @@ int osd_finalize_request(struct osd_request *or, return ret; } OSD_DEBUG("out bytes=%llu (bytes_req=%u)\n", - _LLU(or->out.total_bytes), or->out.req->data_len); + _LLU(or->out.total_bytes), blk_rq_bytes(or->out.req)); } if (or->in.bio) { ret = blk_rq_append_bio(or->request->q, or->in.req, or->in.bio); @@ -1308,7 +1308,7 @@ int osd_finalize_request(struct osd_request *or, return ret; } OSD_DEBUG("in bytes=%llu (bytes_req=%u)\n", - _LLU(or->in.total_bytes), or->in.req->data_len); + _LLU(or->in.total_bytes), blk_rq_bytes(or->in.req)); } or->out.pad_buff = sg_out_pad_buffer; diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index 39b3acf..3d16c70 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; } diff --git a/drivers/scsi/scsi_tgt_lib.c b/drivers/scsi/scsi_tgt_lib.c index 48ba413..1030327 100644 --- a/drivers/scsi/scsi_tgt_lib.c +++ b/drivers/scsi/scsi_tgt_lib.c @@ -387,7 +387,7 @@ static int scsi_map_user_pages(struct scsi_tgt_cmd *tcmd, struct scsi_cmnd *cmd, * we use REQ_TYPE_BLOCK_PC so scsi_init_io doesn't set the * length for us. */ - cmd->sdb.length = rq->data_len; + cmd->sdb.length = blk_rq_bytes(rq); return 0; diff --git a/fs/exofs/osd.c b/fs/exofs/osd.c index b249ae9..c97420b 100644 --- a/fs/exofs/osd.c +++ b/fs/exofs/osd.c @@ -50,10 +50,10 @@ int exofs_check_ok_resid(struct osd_request *or, u64 *in_resid, u64 *out_resid) /* FIXME: should be include in osd_sense_info */ if (in_resid) - *in_resid = or->in.req ? or->in.req->data_len : 0; + *in_resid = or->in.req ? blk_rq_bytes(or->in.req) : 0; if (out_resid) - *out_resid = or->out.req ? or->out.req->data_len : 0; + *out_resid = or->out.req ? blk_rq_bytes(or->out.req) : 0; return ret; } -- 1.6.0.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/