By default, directories created in the root dir do not increase the root's
i_nlink, which prevents the "find" command from finding subdirectories.
This fix increases the i_nlink for entries created in the root dir.

More generally, this should be applied to every syscall which changes a
property of the root (eg: chmod/chown). Right now, doing a chmod on the
root only applies it to the original fs.

--- ./fs/evfs/evfs_core.c.nocrash	2007-01-03 15:49:35 +0100
+++ ./fs/evfs/evfs_core.c	2007-01-03 16:37:48 +0100
@@ -663,6 +663,14 @@
 	if((file = inode_dentry_name(ino, dentry)) == NULL) return(-ENOMEM);
 	fs = get_fs(); set_fs(KERNEL_DS);
 	err = sys_mkdir(file, mode);
+	if (!err) {
+		/* inc usecount for root */
+		if (ino->i_sb->s_root->d_inode == ino) {
+			ino->i_nlink++;
+			mark_inode_dirty(ino);
+		}
+	}
+			
 	set_fs(fs);
 	kfree(file);
 	return(err);
@@ -677,6 +685,13 @@
 	if((file = inode_dentry_name(ino, dentry)) == NULL) return(-ENOMEM);
 	fs = get_fs(); set_fs(KERNEL_DS);
 	err = sys_rmdir(file);
+	if (!err) {
+		/* dec usecount for root */
+		if (ino->i_sb->s_root->d_inode == ino) {
+			ino->i_nlink--;
+			mark_inode_dirty(ino);
+		}
+	}
 	set_fs(fs);
 	kfree(file);
 	return(err);