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[SCSI] zfcp: Decouple gid_pn requests from erp

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Don't let the erp wait for gid_pn requests to complete. Instead, queue
the gid_pn work, exit erp and let the finished gid_pn work trigger a
new port reopen.

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>
This commit is contained in:
Christof Schmitt
2009-08-18 15:43:20 +02:00
committed by James Bottomley
parent 564e1c86c8
commit 799b76d09a
6 changed files with 47 additions and 56 deletions
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9
drivers/s390/scsi/zfcp_aux.c
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@@ -362,6 +362,11 @@ static int zfcp_allocate_low_mem_buffers(struct zfcp_adapter *adapter)
if (!adapter->pool.erp_req)
return -ENOMEM;
adapter->pool.gid_pn_req =
mempool_create_kmalloc_pool(1, sizeof(struct zfcp_fsf_req));
if (!adapter->pool.gid_pn_req)
return -ENOMEM;
adapter->pool.scsi_req =
mempool_create_kmalloc_pool(1, sizeof(struct zfcp_fsf_req));
if (!adapter->pool.scsi_req)
@@ -379,7 +384,7 @@ static int zfcp_allocate_low_mem_buffers(struct zfcp_adapter *adapter)
return -ENOMEM;
adapter->pool.qtcb_pool =
mempool_create_slab_pool(3, zfcp_data.qtcb_cache);
mempool_create_slab_pool(4, zfcp_data.qtcb_cache);
if (!adapter->pool.qtcb_pool)
return -ENOMEM;
@@ -652,7 +657,7 @@ struct zfcp_port *zfcp_port_enqueue(struct zfcp_adapter *adapter, u64 wwpn,
init_waitqueue_head(&port->remove_wq);
INIT_LIST_HEAD(&port->unit_list_head);
INIT_WORK(&port->gid_pn_work, zfcp_erp_port_strategy_open_lookup);
INIT_WORK(&port->gid_pn_work, zfcp_fc_port_did_lookup);
INIT_WORK(&port->test_link_work, zfcp_fc_link_test_work);
INIT_WORK(&port->rport_work, zfcp_scsi_rport_work);