linux/drivers/scsi/fnic
Jeff Garzik f281233d3e SCSI host lock push-down
Move the mid-layer's ->queuecommand() invocation from being locked
with the host lock to being unlocked to facilitate speeding up the
critical path for drivers who don't need this lock taken anyway.

The patch below presents a simple SCSI host lock push-down as an
equivalent transformation.  No locking or other behavior should change
with this patch.  All existing bugs and locking orders are preserved.

Additionally, add one parameter to queuecommand,
	struct Scsi_Host *
and remove one parameter from queuecommand,
	void (*done)(struct scsi_cmnd *)

Scsi_Host* is a convenient pointer that most host drivers need anyway,
and 'done' is redundant to struct scsi_cmnd->scsi_done.

Minimal code disturbance was attempted with this change.  Most drivers
needed only two one-line modifications for their host lock push-down.

Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Acked-by: James Bottomley <James.Bottomley@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-11-16 13:33:23 -08:00
..
cq_desc.h
cq_enet_desc.h
cq_exch_desc.h
fcpio.h
fnic_attrs.c
fnic_fcs.c [SCSI] fnic: Change fnic_flush_tx() to flush tx instead of rx queue 2010-04-11 14:02:37 -05:00
fnic_io.h
fnic_isr.c [SCSI] fnic: Process all cq entries per ISR 2009-12-04 12:00:35 -06:00
fnic_main.c [SCSI] fnic: prep for fc host dev loss tmo support 2010-10-07 17:09:33 -05:00
fnic_res.c [SCSI] fnic: Add FIP support to the fnic driver 2009-12-04 12:01:19 -06:00
fnic_res.h [SCSI] fnic: Add FIP support to the fnic driver 2009-12-04 12:01:19 -06:00
fnic_scsi.c SCSI host lock push-down 2010-11-16 13:33:23 -08:00
fnic.h SCSI host lock push-down 2010-11-16 13:33:23 -08:00
Makefile
rq_enet_desc.h
vnic_cq_copy.h
vnic_cq.c
vnic_cq.h
vnic_dev.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
vnic_dev.h
vnic_devcmd.h [SCSI] fnic: Allow multicast and unicast address registrations for fnic 2010-02-17 17:43:49 -06:00
vnic_intr.c
vnic_intr.h
vnic_nic.h
vnic_resource.h
vnic_rq.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
vnic_rq.h
vnic_scsi.h [SCSI] fnic: Add FIP support to the fnic driver 2009-12-04 12:01:19 -06:00
vnic_stats.h
vnic_wq_copy.c
vnic_wq_copy.h
vnic_wq.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
vnic_wq.h
wq_enet_desc.h