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Message-Id: <1240996428-10159-9-git-send-email-tj@kernel.org>
Date: Wed, 29 Apr 2009 18:13:46 +0900
From: Tejun Heo <tj@...nel.org>
To: axboe@...nel.dk, linux-kernel@...r.kernel.org, jeff@...zik.org,
linux-ide@...r.kernel.org, James.Bottomley@...senPartnership.com,
linux-scsi@...r.kernel.org, bzolnier@...il.com,
petkovbb@...glemail.com, sshtylyov@...mvista.com,
mike.miller@...com, chirag.kantharia@...com, Eric.Moore@....com,
stern@...land.harvard.edu, fujita.tomonori@....ntt.co.jp,
zaitcev@...hat.com, Geert.Uytterhoeven@...ycom.com,
sfr@...b.auug.org.au, grant.likely@...retlab.ca,
paul.clements@...eleye.com, jesper.juhl@...il.com,
tim@...erelk.net, jeremy@...source.com, adrian@...en.demon.co.uk,
oakad@...oo.com, dwmw2@...radead.org, schwidefsky@...ibm.com,
ballabio_dario@....com, davem@...emloft.net, rusty@...tcorp.com.au,
Markus.Lidel@...dowconnect.com, bharrosh@...asas.com
Cc: Tejun Heo <tj@...nel.org>, "Darrick J. Wong" <djwong@...ibm.com>
Subject: [PATCH 08/10] 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.
[ Impact: convert direct rq->data_len usages to blk_rq_bytes() ]
Signed-off-by: Tejun Heo <tj@...nel.org>
Cc: Pete Zaitcev <zaitcev@...hat.com>
Cc: Eric Moore <Eric.Moore@....com>
Cc: Markus Lidel <Markus.Lidel@...dowconnect.com>
Cc: Darrick J. Wong <djwong@...ibm.com>
Cc: James Bottomley <James.Bottomley@...senPartnership.com>
Cc: Eric Moore <Eric.Moore@....com>
Cc: Boaz Harrosh <bharrosh@...asas.com>
Cc: FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>
---
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
--
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