staging: lustre: discard libcfs_kvzalloc_cpt()

This function is used precisely once, and is sufficiently
trivial that it may as well be open-coded.

Doing so helpfully highlights the similarity
between the new kvzalloc_node() call and the already existing
kzalloc_node() call in the same function.
Signed-off-by: NNeilBrown <neilb@suse.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/lustre/include/linux/libcfs/libcfs.h

@@ -113,8 +113,6 @@ static inline void *__container_of(void *ptr, unsigned long shift)
 #define _LIBCFS_H
 
 void *libcfs_kvzalloc(size_t size, gfp_t flags);
-void *libcfs_kvzalloc_cpt(struct cfs_cpt_table *cptab, int cpt, size_t size,
-			  gfp_t flags);
 
 extern struct miscdevice libcfs_dev;
 /**

drivers/staging/lustre/lnet/libcfs/linux/linux-mem.c

@@ -42,10 +42,3 @@ void *libcfs_kvzalloc(size_t size, gfp_t flags)
 	return ret;
 }
 EXPORT_SYMBOL(libcfs_kvzalloc);
-
-void *libcfs_kvzalloc_cpt(struct cfs_cpt_table *cptab, int cpt, size_t size,
-			  gfp_t flags)
-{
-	return kvzalloc_node(size, flags, cfs_cpt_spread_node(cptab, cpt));
-}
-EXPORT_SYMBOL(libcfs_kvzalloc_cpt);

drivers/staging/lustre/lustre/ptlrpc/service.c

@@ -83,10 +83,10 @@ ptlrpc_alloc_rqbd(struct ptlrpc_service_part *svcpt)
 	rqbd->rqbd_cbid.cbid_fn = request_in_callback;
 	rqbd->rqbd_cbid.cbid_arg = rqbd;
 	INIT_LIST_HEAD(&rqbd->rqbd_reqs);
-	rqbd->rqbd_buffer = libcfs_kvzalloc_cpt(svc->srv_cptable,
-						svcpt->scp_cpt,
-						svc->srv_buf_size,
-						GFP_KERNEL);
+	rqbd->rqbd_buffer = kvzalloc_node(svc->srv_buf_size, GFP_KERNEL,
+					  cfs_cpt_spread_node(svc->srv_cptable,
+							      svcpt->scp_cpt));
+
 	if (!rqbd->rqbd_buffer) {
 		kfree(rqbd);
 		return NULL;