Christoph Hellwig 7466501608 scsi: convert host_busy to atomic_t ... Avoid taking the host-wide host_lock to check the per-host queue limit. Instead we do an atomic_inc_return early on to grab our slot in the queue, and if necessary decrement it after finishing all checks. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Reviewed-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Webb Scales <webbnh@hp.com> Acked-by: Jens Axboe <axboe@kernel.dk> Tested-by: Bart Van Assche <bvanassche@acm.org> Tested-by: Robert Elliott <elliott@hp.com>		2014-07-25 07:43:43 -04:00
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Kconfig
Makefile
sas_ata.c	libata, libsas: kill pm_result and related cleanup	2014-03-18 16:08:38 -04:00
sas_discover.c
sas_dump.c
sas_dump.h
sas_event.c
sas_expander.c	block: Kill bio_segments()/bi_vcnt usage	2013-11-23 22:33:51 -08:00
sas_host_smp.c
sas_init.c
sas_internal.h
sas_phy.c
sas_port.c
sas_scsi_host.c	scsi: convert host_busy to atomic_t	2014-07-25 07:43:43 -04:00
sas_task.c