btrfs: send: Change process_all_new_xattr -> process_all_xattr

Along side the function rename, add a new iterate_dir_item_t function to work
as a filter, to process the inode as desired by the called. This change
will be used by the next patch.

Signed-off-by: Marcos Paulo de Souza <mpdesouza@suse.com>

fs/btrfs/send.c

@@ -4738,7 +4738,22 @@ static int process_changed_xattr(struct send_ctx *sctx)
 	return ret;
 }
 
-static int process_all_new_xattrs(struct send_ctx *sctx)
+/*
+ * process_all_xattrs() - Iterate over all xattrs of an inode
+ * @sctx:	Send context, containing the data of the inode
+ * @filter:	Function to be called to all found xattr related to the inode
+ *
+ * Basically this function iterates over all xattr of an inode, then calling
+ * @filter to process the xattr as desired.
+ *
+ * The @filter function can be any function obeying the iterate_dir_item_t
+ * function pointer definition.
+ *
+ * Returns 0 for success and <0 if something went wrong with the @filter
+ * function.
+ */
+static int process_all_xattrs(struct send_ctx *sctx,
+					iterate_dir_item_t filter)
 {
 	int ret;
 	struct btrfs_root *root;
@@ -4782,7 +4797,7 @@ static int process_all_new_xattrs(struct send_ctx *sctx)
 			goto out;
 		}
 
-		ret = iterate_dir_item(root, path, __process_new_xattr, sctx);
+		ret = iterate_dir_item(root, path, filter, sctx);
 		if (ret < 0)
 			goto out;
 
@@ -6280,7 +6295,7 @@ static int changed_inode(struct send_ctx *sctx,
 			ret = process_all_extents(sctx);
 			if (ret < 0)
 				goto out;
-			ret = process_all_new_xattrs(sctx);
+			ret = process_all_xattrs(sctx, __process_new_xattr);
 			if (ret < 0)
 				goto out;
 		} else {