dir = sysfs_get_dentry(kobj->dentry,grp->name); 
dir = lookup_one_len(grp->name, kobj->dentry, strlen(grp->name)); 
void sysfs_remove_group(struct kobject * kobj, 			const struct attribute_group * grp){	struct dentry * dir;	if (grp->name)		dir = sysfs_get_dentry(kobj->dentry,grp->name);	else		dir = dget(kobj->dentry);	remove_files(dir,grp);	if (grp->name)		sysfs_remove_subdir(dir);	/* release the ref. taken in this routine */	dput(dir);}
4520	/local/tlutelli/issta_data/temp/c/2005_temp/2005/4520/5f45f1a78fbac3cc859ec10c5366e97d20d40fa2/group.c/clean/fs/sysfs/group.c