From: Chris Wedgwood <chris@cybernet.co.nz>
To: Andrea Arcangeli <andrea@suse.de>
Cc: Gabor Lenart <lgb@oxygene.terra.vein.hu>,
linux-kernel@vger.rutgers.edu, linux-mm@kvack.org
Subject: Re: [VFS] move active filesystem
Date: Thu, 20 May 1999 08:09:44 +1200 [thread overview]
Message-ID: <19990520080944.A4173@caffeine.ix.net.nz> (raw)
In-Reply-To: <Pine.LNX.4.05.9905191820290.3829-100000@laser.random>; from Andrea Arcangeli on Wed, May 19, 1999 at 06:28:04PM +0200
> Not really. We obviously can, but not in O(1).
Indeed... but not for arbitrary pages (eg. locked by other
susbsystems, drivers or applications)
> I could just add the logic to have the information in O(1), but
> then you must know that at every allocation you'll have to insert a
> entry in a queue, and remove an entry from a queue at every
> umapping/freeing of memory. Anyway I'll think I'll do that very
> soon to improve and simplify a lot my update_shared_mappings and
> many other similar thing in order to handle all such things in
> O(1).
Won't this be fairly expensive?
-cw
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next prev parent reply other threads:[~1999-05-19 20:09 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <19990518183725.B30692@caffeine.ix.net.nz>
1999-05-19 16:28 ` Andrea Arcangeli
1999-05-19 20:09 ` Chris Wedgwood [this message]
1999-05-26 16:14 ` Stephen C. Tweedie
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