From: Miklos Szeredi <miklos@szeredi.hu>
To: a.p.zijlstra@chello.nl
Cc: jdike@addtoit.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: per-bdi-throttling: synchronous writepage doesn't work correctly
Date: Thu, 01 Nov 2007 18:28:49 +0100 [thread overview]
Message-ID: <E1Indqb-00049a-00@dorka.pomaz.szeredi.hu> (raw)
In-Reply-To: <1193936949.27652.321.camel@twins> (message from Peter Zijlstra on Thu, 01 Nov 2007 18:09:09 +0100)
> The page not having PG_writeback set on return is a hint, but not fool
> proof, it could be the device is just blazing fast.
Hmm, does it actually has to be foolproof though? What will happen if
bdi_writeout_inc() is called twice for the page? The device will get
twice the number of pages it deserves? That's not all that bad,
especially since that is a really really fast device.
Miklos
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next prev parent reply other threads:[~2007-11-01 17:28 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-11-01 16:49 Miklos Szeredi
2007-11-01 16:51 ` Peter Zijlstra
2007-11-01 17:00 ` Miklos Szeredi
2007-11-01 17:09 ` Peter Zijlstra
2007-11-01 17:16 ` Peter Zijlstra
2007-11-01 18:35 ` Peter Zijlstra
2007-11-01 19:19 ` Miklos Szeredi
2007-11-01 19:55 ` Peter Zijlstra
2007-11-01 17:28 ` Miklos Szeredi [this message]
2007-11-01 17:39 ` Peter Zijlstra
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