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authorChristof Schmitt <christof.schmitt@de.ibm.com>2011-02-22 19:54:41 +0100
committerJames Bottomley <James.Bottomley@suse.de>2011-02-25 12:02:03 -0500
commit087897e36982ef8536dc9c8baed159a31517b5e6 (patch)
tree3d54e6ca8880f226cfe77c2266a47b6f3474b493 /drivers/s390/scsi/zfcp_ext.h
parentc7b279ae51942c14529bf2806685e9c658f28611 (diff)
[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>
Diffstat (limited to 'drivers/s390/scsi/zfcp_ext.h')
-rw-r--r--drivers/s390/scsi/zfcp_ext.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/s390/scsi/zfcp_ext.h b/drivers/s390/scsi/zfcp_ext.h
index 6e325284fbe7..fa1834f211aa 100644
--- a/drivers/s390/scsi/zfcp_ext.h
+++ b/drivers/s390/scsi/zfcp_ext.h
@@ -80,6 +80,7 @@ extern void zfcp_erp_notify(struct zfcp_erp_action *, unsigned long);
extern void zfcp_erp_timeout_handler(unsigned long);
/* zfcp_fc.c */
+extern struct kmem_cache *zfcp_fc_req_cache;
extern void zfcp_fc_enqueue_event(struct zfcp_adapter *,
enum fc_host_event_code event_code, u32);
extern void zfcp_fc_post_event(struct work_struct *);