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

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Message-ID: <CACVXFVM=JTxBc7dUNgAYg3oEveASZMJEvSuTjR+_u0E1ZCUHkA@mail.gmail.com>
Date:	Thu, 1 Nov 2012 07:18:11 +0800
From:	Ming Lei <ming.lei@...onical.com>
To:	Alan Stern <stern@...land.harvard.edu>
Cc:	Oliver Neukum <oneukum@...e.de>, linux-kernel@...r.kernel.org,
	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 11:41 PM, Alan Stern <stern@...land.harvard.edu> wrote:
>
> Sorry, I misread your message.  You are setting the device's flag, not
> the thread's flag.

Never mind.

>
> This still doesn't help in this case where CONFIG_PM_RUNTIME is
> disabled.  I think it will be simpler to set the noio flag during every
> device reset.

Yes, it's better to set the flag during every device reset now.

Also pppoe or network interface over serial port is a bit difficult to
deal with, as Oliver pointed out.


Thanks,
--
Ming Lei
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