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Date: Mon, 17 Jul 2006 08:27:51 -0700 From: Greg KH <greg@...ah.com> To: Pavel Machek <pavel@....cz> Cc: stable@...nel.org, kernel list <linux-kernel@...r.kernel.org>, Andrew Morton <akpm@...l.org>, rml@...ell.com Subject: Re: [stable] [patch-stable 2.6.16] pdflush: handle resume wakeups On Sat, Jul 08, 2006 at 05:37:31PM +0200, Pavel Machek wrote: > > 2.6.16 needs this. It was merged into 2.6.18-rc1 in > http://www.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=d616e09ab33aa4d013a93c9b393efd5cebf78521 . > > pdflush is carefully designed to ensure that all wakeups have some > corresponding work to do - if a woken-up pdflush thread discovers that > it hasn't been given any work to do then this is considered an error. > > That all broke when swsusp came along - because a timer-delivered > wakeup to a frozen pdflush thread will just get lost. This causes the > pdflush thread to get lost as well: the writeback timer is supposed to > be re-armed by pdflush in process context, but pdflush doesn't execute > the callout which does this. > > Fix that up by ignoring the return value from try_to_freeze(): jsut > proceed, see if we have any work pending and only go back to sleep if > that is not the case. Queued to -stable, thanks. greg k-h - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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