xfs: move xfs_attr_defer_add to xfs_attr_item.c

Move the code that adds the incore xfs_attr_item deferred work data to a
transaction live with the ATTRI log item code.  This means that the
upper level extended attribute code no longer has to know about the
inner workings of the ATTRI log items.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>

fs/xfs/libxfs/xfs_attr.c

@@ -901,37 +901,6 @@ xfs_attr_lookup(
 	return error;
 }
 
-static void
-xfs_attr_defer_add(
-	struct xfs_da_args	*args,
-	unsigned int		op_flags)
-{
-
-	struct xfs_attr_intent	*new;
-
-	new = kmem_cache_zalloc(xfs_attr_intent_cache,
-			GFP_KERNEL | __GFP_NOFAIL);
-	new->xattri_op_flags = op_flags;
-	new->xattri_da_args = args;
-
-	switch (op_flags) {
-	case XFS_ATTRI_OP_FLAGS_SET:
-		new->xattri_dela_state = xfs_attr_init_add_state(args);
-		break;
-	case XFS_ATTRI_OP_FLAGS_REPLACE:
-		new->xattri_dela_state = xfs_attr_init_replace_state(args);
-		break;
-	case XFS_ATTRI_OP_FLAGS_REMOVE:
-		new->xattri_dela_state = xfs_attr_init_remove_state(args);
-		break;
-	default:
-		ASSERT(0);
-	}
-
-	xfs_defer_add(args->trans, &new->xattri_list, &xfs_attr_defer_type);
-	trace_xfs_attr_defer_add(new->xattri_dela_state, args->dp);
-}
-
 int
 xfs_attr_set(
 	struct xfs_da_args	*args,
@@ -1021,14 +990,14 @@ xfs_attr_set(
 	case -EEXIST:
 		if (op == XFS_ATTRUPDATE_REMOVE) {
 			/* if no value, we are performing a remove operation */
-			xfs_attr_defer_add(args, XFS_ATTRI_OP_FLAGS_REMOVE);
+			xfs_attr_defer_add(args, XFS_ATTR_DEFER_REMOVE);
 			break;
 		}
 
 		/* Pure create fails if the attr already exists */
 		if (op == XFS_ATTRUPDATE_CREATE)
 			goto out_trans_cancel;
-		xfs_attr_defer_add(args, XFS_ATTRI_OP_FLAGS_REPLACE);
+		xfs_attr_defer_add(args, XFS_ATTR_DEFER_REPLACE);
 		break;
 	case -ENOATTR:
 		/* Can't remove what isn't there. */
@@ -1038,7 +1007,7 @@ xfs_attr_set(
 		/* Pure replace fails if no existing attr to replace. */
 		if (op == XFS_ATTRUPDATE_REPLACE)
 			goto out_trans_cancel;
-		xfs_attr_defer_add(args, XFS_ATTRI_OP_FLAGS_SET);
+		xfs_attr_defer_add(args, XFS_ATTR_DEFER_SET);
 		break;
 	default:
 		goto out_trans_cancel;

fs/xfs/xfs_attr_item.c

@@ -727,6 +727,36 @@ xfs_attr_create_done(
 	return &attrdp->attrd_item;
 }
 
+void
+xfs_attr_defer_add(
+	struct xfs_da_args	*args,
+	enum xfs_attr_defer_op	op)
+{
+	struct xfs_attr_intent	*new;
+
+	new = kmem_cache_zalloc(xfs_attr_intent_cache,
+			GFP_NOFS | __GFP_NOFAIL);
+	new->xattri_da_args = args;
+
+	switch (op) {
+	case XFS_ATTR_DEFER_SET:
+		new->xattri_op_flags = XFS_ATTRI_OP_FLAGS_SET;
+		new->xattri_dela_state = xfs_attr_init_add_state(args);
+		break;
+	case XFS_ATTR_DEFER_REPLACE:
+		new->xattri_op_flags = XFS_ATTRI_OP_FLAGS_REPLACE;
+		new->xattri_dela_state = xfs_attr_init_replace_state(args);
+		break;
+	case XFS_ATTR_DEFER_REMOVE:
+		new->xattri_op_flags = XFS_ATTRI_OP_FLAGS_REMOVE;
+		new->xattri_dela_state = xfs_attr_init_remove_state(args);
+		break;
+	}
+
+	xfs_defer_add(args->trans, &new->xattri_list, &xfs_attr_defer_type);
+	trace_xfs_attr_defer_add(new->xattri_dela_state, args->dp);
+}
+
 const struct xfs_defer_op_type xfs_attr_defer_type = {
 	.name		= "attr",
 	.max_items	= 1,

fs/xfs/xfs_attr_item.h

@@ -51,4 +51,12 @@ struct xfs_attrd_log_item {
 extern struct kmem_cache	*xfs_attri_cache;
 extern struct kmem_cache	*xfs_attrd_cache;
 
+enum xfs_attr_defer_op {
+	XFS_ATTR_DEFER_SET,
+	XFS_ATTR_DEFER_REMOVE,
+	XFS_ATTR_DEFER_REPLACE,
+};
+
+void xfs_attr_defer_add(struct xfs_da_args *args, enum xfs_attr_defer_op op);
+
 #endif	/* __XFS_ATTR_ITEM_H__ */