afs: Eliminate the address pointer from the address list cursor

Eliminate the address pointer from the address list cursor as it's
redundant (ac->addrs[ac->index] can be used to find the same address) and
address lists must be replaced rather than being rearranged, so is of
limited value.
Signed-off-by: David Howells <dhowells@redhat.com>

fs/afs/addr_list.c

@@ -371,7 +371,6 @@ bool afs_iterate_addresses(struct afs_addr_cursor *ac)
 
 	ac->begun = true;
 	ac->responded = false;
-	ac->addr = &ac->alist->addrs[ac->index];
 	return true;
 }
 
@@ -389,7 +388,6 @@ int afs_end_cursor(struct afs_addr_cursor *ac)
 		afs_put_addrlist(alist);
 	}
 
-	ac->addr = NULL;
 	ac->alist = NULL;
 	ac->begun = false;
 	return ac->error;

fs/afs/internal.h

@@ -653,7 +653,6 @@ struct afs_interface {
  */
 struct afs_addr_cursor {
 	struct afs_addr_list	*alist;		/* Current address list (pins ref) */
-	struct sockaddr_rxrpc	*addr;
 	u32			abort_code;
 	unsigned short		start;		/* Starting point in alist->addrs[] */
 	unsigned short		index;		/* Wrapping offset from start to current addr */

fs/afs/rxrpc.c

@@ -359,7 +359,7 @@ static int afs_send_pages(struct afs_call *call, struct msghdr *msg)
 long afs_make_call(struct afs_addr_cursor *ac, struct afs_call *call,
 		   gfp_t gfp, bool async)
 {
-	struct sockaddr_rxrpc *srx = ac->addr;
+	struct sockaddr_rxrpc *srx = &ac->alist->addrs[ac->index];
 	struct rxrpc_call *rxcall;
 	struct msghdr msg;
 	struct kvec iov[1];

fs/afs/server.c

@@ -367,7 +367,6 @@ static void afs_destroy_server(struct afs_net *net, struct afs_server *server)
 		.alist	= alist,
 		.start	= alist->index,
 		.index	= 0,
-		.addr	= &alist->addrs[alist->index],
 		.error	= 0,
 	};
 	_enter("%p", server);
@@ -518,7 +517,6 @@ static bool afs_do_probe_fileserver(struct afs_fs_cursor *fc)
 
 	_enter("");
 
-	fc->ac.addr = NULL;
 	fc->ac.start = READ_ONCE(fc->ac.alist->index);
 	fc->ac.index = fc->ac.start;
 	fc->ac.error = 0;

fs/afs/vl_rotate.c

@@ -209,7 +209,7 @@ bool afs_select_vlserver(struct afs_vl_cursor *vc)
 	if (!afs_iterate_addresses(&vc->ac))
 		goto next_server;
 
-	_leave(" = t %pISpc", &vc->ac.addr->transport);
+	_leave(" = t %pISpc", &vc->ac.alist->addrs[vc->ac.index].transport);
 	return true;
 
 next_server:

fs/afs/volume.c

@@ -88,16 +88,16 @@ static struct afs_vldb_entry *afs_vl_lookup_vldb(struct afs_cell *cell,
 			case VL_SERVICE:
 				clear_bit(vc.ac.index, &vc.ac.alist->yfs);
 				set_bit(vc.ac.index, &vc.ac.alist->probed);
-				vc.ac.addr->srx_service = ret;
+				vc.ac.alist->addrs[vc.ac.index].srx_service = ret;
 				break;
 			case YFS_VL_SERVICE:
 				set_bit(vc.ac.index, &vc.ac.alist->yfs);
 				set_bit(vc.ac.index, &vc.ac.alist->probed);
-				vc.ac.addr->srx_service = ret;
+				vc.ac.alist->addrs[vc.ac.index].srx_service = ret;
 				break;
 			}
 		}
-		
+
 		vldb = afs_vl_get_entry_by_name_u(&vc, volname, volnamesz);
 	}