return 0; 
return NULL; 
static int proc_follow_link(struct dentry *dentry, struct nameidata *nd){	nd_set_link(nd, PDE(dentry->d_inode)->data);	return 0;}
10457	/local/tlutelli/issta_data/temp/c/2005_temp/2005/10457/008b150a3c4d971cd65d02d107b8fcc860bc959c/generic.c/clean/fs/proc/generic.c