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

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Message-Id: <200801261655.31313.a1426z@gawab.com>
Date:	Sat, 26 Jan 2008 16:55:31 +0300
From:	Al Boldi <a1426z@...ab.com>
To:	"KOSAKI Motohiro" <m-kosaki@...es.dti.ne.jp>
Cc:	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Kernel Event Notifications (was: [RFC] Parallelize IO for e2fsck)

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

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