[SCSI] zfcp: Introduce new kmem_cache for FC request and response data

A data buffer that is passed to the hardware must not cross a page
boundary. zfcp uses a series of kmem_caches to align the data to not
cross a page boundary. Introduce a new kmem_cache for the FC requests
sent from the zfcp driver and use it for the ELS ADISC data.  The goal
is to migrate to the FC kmem_cache in later patches and remove the
request specific kmem_caches.

Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: Steffen Maier <maier@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

1 files changed, 7 insertions, 7 deletions

diff --git a/drivers/s390/scsi/zfcp_aux.c b/drivers/s390/scsi/zfcp_aux.c
index 81e185602bb2..adbc05c44362 100644
--- a/drivers/s390/scsi/zfcp_aux.c
+++ b/drivers/s390/scsi/zfcp_aux.c
@@ -137,10 +137,10 @@ static int __init zfcp_module_init(void)
         if (!zfcp_data.gid_pn_cache)
                 goto out_gid_cache;
 
-        zfcp_data.adisc_cache = zfcp_cache_hw_align("zfcp_adisc",
-                                        sizeof(struct zfcp_fc_els_adisc));
-        if (!zfcp_data.adisc_cache)
-                goto out_adisc_cache;
+        zfcp_fc_req_cache = zfcp_cache_hw_align("zfcp_fc_req",
+                                                sizeof(struct zfcp_fc_req));
+        if (!zfcp_fc_req_cache)
+                goto out_fc_cache;
 
         zfcp_data.scsi_transport_template =
                 fc_attach_transport(&zfcp_transport_functions);
@@ -172,8 +172,8 @@ out_ccw_register:
 out_misc:
         fc_release_transport(zfcp_data.scsi_transport_template);
 out_transport:
-        kmem_cache_destroy(zfcp_data.adisc_cache);
-out_adisc_cache:
+        kmem_cache_destroy(zfcp_fc_req_cache);
+out_fc_cache:
         kmem_cache_destroy(zfcp_data.gid_pn_cache);
 out_gid_cache:
         kmem_cache_destroy(zfcp_data.qtcb_cache);
@@ -190,7 +190,7 @@ static void __exit zfcp_module_exit(void)
         ccw_driver_unregister(&zfcp_ccw_driver);
         misc_deregister(&zfcp_cfdc_misc);
         fc_release_transport(zfcp_data.scsi_transport_template);
-        kmem_cache_destroy(zfcp_data.adisc_cache);
+        kmem_cache_destroy(zfcp_fc_req_cache);
         kmem_cache_destroy(zfcp_data.gid_pn_cache);
         kmem_cache_destroy(zfcp_data.qtcb_cache);
         kmem_cache_destroy(zfcp_data.gpn_ft_cache);