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Date: Thu, 21 Jun 2012 14:32:35 -0700 From: Tejun Heo <tj@...nel.org> To: Josh Hunt <joshhunt00@...il.com> Cc: Vivek Goyal <vgoyal@...hat.com>, Jens Axboe <axboe@...nel.dk>, linux-kernel@...r.kernel.org, rni@...gle.com Subject: Re: multi-second application stall in open() Hello, On Thu, Jun 21, 2012 at 04:28:24PM -0500, Josh Hunt wrote: > When you say the code has diverged from upstream, do you mean from 3.0 > to 3.5? It's based on something diverged from 2.6.X, so an ancient thing. > Or maybe I'm misunderstanding what you're getting at. Also, if > you have any links to the watchdog timer code you're referring to I > would appreciate it. Rakesh is the one who observed the bug and wrote the watchdog code. Rakesh, I think Josh is seeing similar cfqq hang issue. Did the watchdog code reveal why that happened? Or was it mainly to just kick the queue and keep it going? Thanks. -- tejun -- 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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