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authorChristof Schmitt <christof.schmitt@de.ibm.com>2009-08-18 15:43:27 +0200
committerJames Bottomley <James.Bottomley@suse.de>2009-09-05 08:49:41 -0500
commit143bb6bfe36d20618d8bf667915fe14d14b8ae2f (patch)
treec0c1dad94d0ec49f25b3652581931f2b499b5f07 /drivers/ide/via82cxxx.c
parent98fc4d5c8cd9bd1a412cca922feecb54c1c22d8e (diff)
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[SCSI] zfcp: Defer resource allocation to first ccw_set_online call
So far, zfcp allocated all resources required for FCP adapters/subchannels when the device was discovered in the ccw_probe callback. If there are lots of unused FCP subchannels attached to a system, this is a waste of resources. To alleviate this, defer the resource allocation to the first call to ccw_set_online. To avoid disruptions during possible following calls to ccw_set_offline and then ccw_set_online, keep the adapter resources until the device is finally being removed via ccw_remove. While doing this, also manage the zfcp erp thread together with all other adapter resources in zfcp_adapter_enqueue/dequeue. Reviewed-by: Swen Schillig <swen@vnet.ibm.com> Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Diffstat (limited to 'drivers/ide/via82cxxx.c')
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