fusion: Remove use of DEF_SCSI_QCMD
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>
diff --git a/drivers/message/fusion/mptsas.c b/drivers/message/fusion/mptsas.c
index 00d339c..711fcb5 100644
--- a/drivers/message/fusion/mptsas.c
+++ b/drivers/message/fusion/mptsas.c
@@ -1896,7 +1896,7 @@
}
static int
-mptsas_qcmd_lck(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *))
+mptsas_qcmd(struct Scsi_Host *shost, struct scsi_cmnd *SCpnt)
{
MPT_SCSI_HOST *hd;
MPT_ADAPTER *ioc;
@@ -1904,11 +1904,11 @@
if (!vdevice || !vdevice->vtarget || vdevice->vtarget->deleted) {
SCpnt->result = DID_NO_CONNECT << 16;
- done(SCpnt);
+ SCpnt->scsi_done(SCpnt);
return 0;
}
- hd = shost_priv(SCpnt->device->host);
+ hd = shost_priv(shost);
ioc = hd->ioc;
if (ioc->sas_discovery_quiesce_io)
@@ -1917,11 +1917,9 @@
if (ioc->debug_level & MPT_DEBUG_SCSI)
scsi_print_command(SCpnt);
- return mptscsih_qcmd(SCpnt,done);
+ return mptscsih_qcmd(SCpnt);
}
-static DEF_SCSI_QCMD(mptsas_qcmd)
-
/**
* mptsas_mptsas_eh_timed_out - resets the scsi_cmnd timeout
* if the device under question is currently in the