Re: per-bdi-throttling: synchronous writepage doesn't workcorrectly
From: Peter Zijlstra
Date: Thu Nov 01 2007 - 13:39:49 EST
On Thu, 2007-11-01 at 18:28 +0100, Miklos Szeredi wrote:
> > 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.
But then again, that would require auditing all ->writepage() callsites.
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