linux-kernel - Re: [PATCH v3 2/6] PM / Runtime: introduce pm_runtime_set[get]_memalloc

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Message-ID: <CACVXFVP+QkzXg1v+x2juOe3X0bib8pCZXi=0VyvBOuTp6bxr4Q@mail.gmail.com>
Date:	Wed, 31 Oct 2012 00:15:26 +0800
From:	Ming Lei <ming.lei@...onical.com>
To:	Alan Stern <stern@...land.harvard.edu>
Cc:	linux-kernel@...r.kernel.org, Oliver Neukum <oneukum@...e.de>,
	Minchan Kim <minchan@...nel.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	"Rafael J. Wysocki" <rjw@...k.pl>, Jens Axboe <axboe@...nel.dk>,
	"David S. Miller" <davem@...emloft.net>,
	Andrew Morton <akpm@...ux-foundation.org>,
	netdev@...r.kernel.org, linux-usb@...r.kernel.org,
	linux-pm@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [PATCH v3 2/6] PM / Runtime: introduce pm_runtime_set[get]_memalloc_noio()

On Wed, Oct 31, 2012 at 12:00 AM, Ming Lei <ming.lei@...onical.com> wrote:
>
> Looks the simplest approach is to handle the noio flag thing at the start and
> end of rpm_resume.

Sorry, that doesn't work, runtime_suspend need that too because memory
allocation with block I/O might deadlock when doing I/O on the same device.

Thanks,
--
Ming Lei
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