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7466501608
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> |
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| .. | ||
| Kconfig | ||
| Makefile | ||
| sas_ata.c | ||
| sas_discover.c | ||
| sas_dump.c | ||
| sas_dump.h | ||
| sas_event.c | ||
| sas_expander.c | ||
| sas_host_smp.c | ||
| sas_init.c | ||
| sas_internal.h | ||
| sas_phy.c | ||
| sas_port.c | ||
| sas_scsi_host.c | ||
| sas_task.c | ||