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authorChristof Schmitt <christof.schmitt@de.ibm.com>2009-11-24 18:54:14 +0300
committerJames Bottomley <James.Bottomley@suse.de>2009-12-04 21:02:16 +0300
commitee744622c65cd66824e8dd1b9509e515c800de14 (patch)
tree4925603f5170400b07cde7cc18d2519cfcf788e2 /drivers/s390/scsi/zfcp_aux.c
parent7c7dc196814b9e1d5cc254dc579a5fa78ae524f7 (diff)
downloadlinux-ee744622c65cd66824e8dd1b9509e515c800de14.tar.xz
[SCSI] zfcp: Improve ELS ADISC handling
Introduce kmem_cache for ELS ADISC data to guarantee the required hardware alignment and free the allocated memory in case the send failes. 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/s390/scsi/zfcp_aux.c')
-rw-r--r--drivers/s390/scsi/zfcp_aux.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/s390/scsi/zfcp_aux.c b/drivers/s390/scsi/zfcp_aux.c
index 58bb17732f56..9d0c941b7d33 100644
--- a/drivers/s390/scsi/zfcp_aux.c
+++ b/drivers/s390/scsi/zfcp_aux.c
@@ -179,6 +179,11 @@ 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_data.scsi_transport_template =
fc_attach_transport(&zfcp_transport_functions);
if (!zfcp_data.scsi_transport_template)
@@ -206,6 +211,8 @@ 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_data.gid_pn_cache);
out_gid_cache:
kmem_cache_destroy(zfcp_data.sr_buffer_cache);
@@ -224,6 +231,7 @@ 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_data.gid_pn_cache);
kmem_cache_destroy(zfcp_data.sr_buffer_cache);
kmem_cache_destroy(zfcp_data.qtcb_cache);