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.
Basically, yes. But then again, that would require auditing all ->writepage() callsites.
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