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fusion: Remove use of DEF_SCSI_QCMD

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Removing the host_lock from the I/O submission path gives a huge
scalability improvement.

Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
Reviewed-by: Nicholas Bellinger <nab@linux-iscsi.org>
Reviewed-by: Praveen Krishnamoorthy <Praveen.krishnamoorthy@lsi.com>
Acked-by: Sreekanth Reddy <Sreekanth.reddy@lsi.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Matthew Wilcox
2014-03-27 16:40:36 -04:00
committed by Christoph Hellwig
parent ecc3bc9825
commit a48ac9e5d4
5 changed files with 18 additions and 26 deletions
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12
drivers/message/fusion/mptfc.c
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@@ -649,7 +649,7 @@ mptfc_slave_alloc(struct scsi_device *sdev)
}
static int
mptfc_qcmd_lck(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *))
mptfc_qcmd(struct Scsi_Host *shost, struct scsi_cmnd *SCpnt)
{
struct mptfc_rport_info *ri;
struct fc_rport *rport = starget_to_rport(scsi_target(SCpnt->device));
@@ -658,14 +658,14 @@ mptfc_qcmd_lck(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *))
if (!vdevice || !vdevice->vtarget) {
SCpnt->result = DID_NO_CONNECT << 16;
done(SCpnt);
SCpnt->scsi_done(SCpnt);
return 0;
}
err = fc_remote_port_chkready(rport);
if (unlikely(err)) {
SCpnt->result = err;
done(SCpnt);
SCpnt->scsi_done(SCpnt);
return 0;
}
@@ -673,15 +673,13 @@ mptfc_qcmd_lck(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *))
ri = *((struct mptfc_rport_info **)rport->dd_data);
if (unlikely(!ri)) {
SCpnt->result = DID_IMM_RETRY << 16;
done(SCpnt);
SCpnt->scsi_done(SCpnt);
return 0;
}
return mptscsih_qcmd(SCpnt,done);
return mptscsih_qcmd(SCpnt);
}
static DEF_SCSI_QCMD(mptfc_qcmd)
/*
* mptfc_display_port_link_speed - displaying link speed
* @ioc: Pointer to MPT_ADAPTER structure