[PATCH] Use new svc_export_show to implement e_show for /proc/fs/nfs/exports

Also remove the path_buf that was passed around for
/proc/fs/nfs/exports as the existance of seq_path removes the need
for this.

fs/nfsd/export.c

@@ -1028,17 +1028,11 @@ static void exp_flags(struct seq_file *m, int flag, int fsid, uid_t anonu, uid_t
 		seq_printf(m, "%sanongid=%d", first++?",":"", anong);
 }
 
-static inline void mangle(struct seq_file *m, const char *s)
-{
-	seq_escape(m, s, " \t\n\\");
-}
-
 static int e_show(struct seq_file *m, void *p)
 {
 	struct cache_head *cp = p;
 	struct svc_export *exp = container_of(cp, struct svc_export, h);
 	svc_client *clp;
-	char *pbuf;
 
 	if (p == (void *)1) {
 		seq_puts(m, "# Version 1.1\n");
@@ -1051,17 +1045,7 @@ static int e_show(struct seq_file *m, void *p)
 	if (cache_check(&svc_export_cache, &exp->h, NULL))
 		return 0;
 	if (cache_put(&exp->h, &svc_export_cache)) BUG();
-	pbuf = m->private;
-	mangle(m, d_path(exp->ex_dentry, exp->ex_mnt,
-			 pbuf, PAGE_SIZE));
-
-	seq_putc(m, '\t');
-	mangle(m, clp->name);
-	seq_putc(m, '(');
-	exp_flags(m, exp->ex_flags, exp->ex_fsid, 
-		  exp->ex_anon_uid, exp->ex_anon_gid);
-	seq_puts(m, ")\n");
-	return 0;
+	return svc_export_show(m, &svc_export_cache, cp, NULL);
 }
 
 struct seq_operations nfs_exports_op = {

fs/nfsd/nfsctl.c

@@ -175,32 +175,14 @@ static struct file_operations transaction_ops = {
 extern struct seq_operations nfs_exports_op;
 static int exports_open(struct inode *inode, struct file *file)
 {
-	int res;
-	char *namebuf = kmalloc(PAGE_SIZE, GFP_KERNEL);
-	if (namebuf == NULL)
-		return -ENOMEM;
-
-	res = seq_open(file, &nfs_exports_op);
-	if (res)
-		kfree(namebuf);
-	else
-		((struct seq_file *)file->private_data)->private = namebuf;
-
-	return res;
-}
-static int exports_release(struct inode *inode, struct file *file)
-{
-	struct seq_file *m = (struct seq_file *)file->private_data;
-	kfree(m->private);
-	m->private = NULL;
-	return seq_release(inode, file);
+	return seq_open(file, &nfs_exports_op);
 }
 
 static struct file_operations exports_operations = {
 	.open		= exports_open,
 	.read		= seq_read,
 	.llseek		= seq_lseek,
-	.release	= exports_release,
+	.release	= seq_release,
 };
 
 /*----------------------------------------------------------------------------*/