Hannes, > I still would like to keep the above, as the admin can feed blacklist > flags via the kernel commandline, and we don't do any validity checks on > that. So we might end up with invalid flags after all. I suggest you handle this by printing something along the lines of "INVALID_BIT_SET(42)" for each bad flag. Also: Brownie points for adding a new sysfs interface to augment the existing /proc goo for adding entries. Preferably one that takes BLIST names instead of huge hex numbers. -- Martin K. Petersen Oracle Linux Engineering