[SCSI] zfcp: Move FSF request tracking code to new file

Move the code for tracking FSF requests to new file to have this code
in one place. The functions for adding and removing requests on the
I/O path are already inline. The alloc and free functions are only
called once, so it does not hurt to inline them and add them to the
same file.

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>

1 files changed, 3 insertions, 33 deletions

diff --git a/drivers/s390/scsi/zfcp_aux.c b/drivers/s390/scsi/zfcp_aux.c
index 9d0c941b7d3..f42da9d5709 100644
--- a/drivers/s390/scsi/zfcp_aux.c
+++ b/drivers/s390/scsi/zfcp_aux.c
@@ -32,6 +32,7 @@
 #include <linux/seq_file.h>
 #include "zfcp_ext.h"
 #include "zfcp_fc.h"
+#include "zfcp_reqlist.h"
 
 #define ZFCP_BUS_ID_SIZE	20
 
@@ -49,36 +50,6 @@ static struct kmem_cache *zfcp_cache_hw_align(const char *name,
 	return kmem_cache_create(name, size, roundup_pow_of_two(size), 0, NULL);
 }
 
-static int zfcp_reqlist_alloc(struct zfcp_adapter *adapter)
-{
-	int idx;
-
-	adapter->req_list = kcalloc(REQUEST_LIST_SIZE, sizeof(struct list_head),
-				    GFP_KERNEL);
-	if (!adapter->req_list)
-		return -ENOMEM;
-
-	for (idx = 0; idx < REQUEST_LIST_SIZE; idx++)
-		INIT_LIST_HEAD(&adapter->req_list[idx]);
-	return 0;
-}
-
-/**
- * zfcp_reqlist_isempty - is the request list empty
- * @adapter: pointer to struct zfcp_adapter
- *
- * Returns: true if list is empty, false otherwise
- */
-int zfcp_reqlist_isempty(struct zfcp_adapter *adapter)
-{
-	unsigned int idx;
-
-	for (idx = 0; idx < REQUEST_LIST_SIZE; idx++)
-		if (!list_empty(&adapter->req_list[idx]))
-			return 0;
-	return 1;
-}
-
 static void __init zfcp_init_device_configure(char *busid, u64 wwpn, u64 lun)
 {
 	struct ccw_device *cdev;
@@ -539,7 +510,8 @@ struct zfcp_adapter *zfcp_adapter_enqueue(struct ccw_device *ccw_device)
 	if (zfcp_allocate_low_mem_buffers(adapter))
 		goto failed;
 
-	if (zfcp_reqlist_alloc(adapter))
+	adapter->req_list = zfcp_reqlist_alloc();
+	if (!adapter->req_list)
 		goto failed;
 
 	if (zfcp_dbf_adapter_register(adapter))
@@ -560,8 +532,6 @@ struct zfcp_adapter *zfcp_adapter_enqueue(struct ccw_device *ccw_device)
 	INIT_LIST_HEAD(&adapter->erp_ready_head);
 	INIT_LIST_HEAD(&adapter->erp_running_head);
 
-	spin_lock_init(&adapter->req_list_lock);
-
 	rwlock_init(&adapter->erp_lock);
 	rwlock_init(&adapter->abort_lock);