On Wed, 2008-08-27 at 14:22 -0700, Andrew Morton wrote: > btw, what the heck is percpu_counter_init_irq()? Some mysterious > lockdep-specific thing? > > <does git-fiddle. Oh. crappy changelog.> > > I let that one leak through uncommented. Must be getting old. > Probably it will need an EXPORT_SYMBOL() sometime. Basically all it does it break the percpu_counter lock into two classes. One for the irq-unsafe users and one for the irq-safe users. Without this lockdep goes splat complaining about irq recursion deadlocks and the like between these two separate users. -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
