Kernel Event Notifications (was: [RFC] Parallelize IO for e2fsck)

Al Boldi
2008-01-26T13:56:18Z

KOSAKI Motohiro wrote:
> > > And from a performance point of view letting applications voluntarily
> > > free some memory is better even than starting to swap.
> >
> > Absolutely.
>
> the mem_notify patch can realize "just before starting swapping"
> notification :)
>
> to be honest, I don't know fs guys requirement.
> if lacking feature of fs guys needed, I implement it with presure if
> you tell me it.

These notifications are really useful, but it may be much wiser to pipe them
thru some kevent-notification sub-system, instead of introducing kernel
notifier-chain end-points left, right, and center.

Thanks!

--
Al