linux-kernel - Re: [PATCH] Documentation: power: swsusp: Fix script for unswapping

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Date:	Sat, 16 Aug 2014 17:42:30 +0200
From:	Pavel Machek <pavel@....cz>
To:	Pali Roh?r <pali.rohar@...il.com>
Cc:	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Len Brown <len.brown@...el.com>,
	Randy Dunlap <rdunlap@...radead.org>, linux-pm@...r.kernel.org,
	linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Documentation: power: swsusp: Fix script for unswapping

On Tue 2014-05-06 13:01:56, Pali Roh?r wrote:
> System can have mmaped also character devices (e.g dri devices by X) or deleted
> files. Running cat on character devices is really bad idea (system can hang) so
> run cat only on regular files. Also mmaped files can have spaces in filenames.
> 
> Signed-off-by: Pali Rohár <pali.rohar@...il.com>

Acked-by: Pavel Machek <pavel@....cz>

> ---
>  Documentation/power/swsusp.txt |    5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)
> 
> diff --git a/Documentation/power/swsusp.txt b/Documentation/power/swsusp.txt
> index 079160e..f732a83 100644
> --- a/Documentation/power/swsusp.txt
> +++ b/Documentation/power/swsusp.txt
> @@ -220,7 +220,10 @@ Q: After resuming, system is paging heavily, leading to very bad interactivity.
>  
>  A: Try running
>  
> -cat `cat /proc/[0-9]*/maps | grep / | sed 's:.* /:/:' | sort -u` > /dev/null
> +cat /proc/[0-9]*/maps | grep / | sed 's:.* /:/:' | sort -u | while read file
> +do
> +  test -f "$file" && cat "$file" > /dev/null
> +done
>  
>  after resume. swapoff -a; swapon -a may also be useful.
>  
> -- 
> 1.7.9.5

-- 
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(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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