afs: Condense afs_call's reply{,2,3,4} into an array

Condense struct afs_call's reply anchor members - reply{,2,3,4} - into an
array.
Signed-off-by: David Howells <dhowells@redhat.com>

fs/afs/file.c

@@ -281,7 +281,7 @@ static int afs_readpage(struct file *file, struct page *page)
 static void afs_readpages_page_done(struct afs_call *call, struct afs_read *req)
 {
 #ifdef CONFIG_AFS_FSCACHE
-	struct afs_vnode *vnode = call->reply;
+	struct afs_vnode *vnode = call->reply[0];
 #endif
 	struct page *page = req->pages[req->index];
 

fs/afs/internal.h

@@ -81,10 +81,7 @@ struct afs_call {
 	struct address_space	*mapping;	/* page set */
 	struct afs_writeback	*wb;		/* writeback being performed */
 	void			*buffer;	/* reply receive buffer */
-	void			*reply;		/* reply buffer (first part) */
-	void			*reply2;	/* reply buffer (second part) */
-	void			*reply3;	/* reply buffer (third part) */
-	void			*reply4;	/* reply buffer (fourth part) */
+	void			*reply[4];	/* Where to put the reply */
 	pgoff_t			first;		/* first page in mapping to deal with */
 	pgoff_t			last;		/* last page in mapping to deal with */
 	size_t			offset;		/* offset into received data store */

fs/afs/rxrpc.c

@@ -639,7 +639,7 @@ static void afs_process_async_call(struct work_struct *work)
 	}
 
 	if (call->state == AFS_CALL_COMPLETE) {
-		call->reply = NULL;
+		call->reply[0] = NULL;
 
 		/* We have two refs to release - one from the alloc and one
 		 * queued with the work item - and we can't just deallocate the

fs/afs/vlclient.c

@@ -32,7 +32,7 @@ static int afs_deliver_vl_get_entry_by_xxx(struct afs_call *call)
 		return ret;
 
 	/* unmarshall the reply once we've received all of it */
-	entry = call->reply;
+	entry = call->reply[0];
 	bp = call->buffer;
 
 	for (loop = 0; loop < 64; loop++)
@@ -135,7 +135,7 @@ int afs_vl_get_entry_by_name(struct afs_net *net,
 		return -ENOMEM;
 
 	call->key = key;
-	call->reply = entry;
+	call->reply[0] = entry;
 
 	/* marshall the parameters */
 	bp = call->request;
@@ -170,7 +170,7 @@ int afs_vl_get_entry_by_id(struct afs_net *net,
 		return -ENOMEM;
 
 	call->key = key;
-	call->reply = entry;
+	call->reply[0] = entry;
 
 	/* marshall the parameters */
 	bp = call->request;