Re: [patch] add private data to notifier_block

From: Zach Brown
Date: Wed Mar 22 2006 - 12:58:03 EST

Kristen Accardi wrote:

> device data can be easily accessed. This patch will modify the
> notifier_block struct to add a void *, and will require no modifications
> to any other users of the notifier_block.

> {
> int (*notifier_call)(struct notifier_block *self, unsigned long, void *);
> struct notifier_block *next;
> + void *data;
> int priority;
> };

Well, it might introduce warnings in users who weren't using named
initializers -- their bare priority initialization might now shift to
trying to initialize a pointer.

Though, that's probably a good thing as it gives an opportunity to
convert them. We also don't want to create a padded structure by
putting the void * after the int.

- z
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