linux-kernel - Re: [PATCH -mm] freezer: Remove PF_NOFREEZE from handle

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Message-Id: <1175980696.10725.12.camel@nigel.suspend2.net>
Date:	Sun, 08 Apr 2007 07:18:16 +1000
From:	Nigel Cunningham <ncunningham@...uxmail.org>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Gautham R Shenoy <ego@...ibm.com>,
	LKML <linux-kernel@...r.kernel.org>, Pavel Machek <pavel@....cz>
Subject: Re: [PATCH -mm] freezer: Remove PF_NOFREEZE from handle_initrd

Hi.

On Sat, 2007-04-07 at 18:14 +0200, Rafael J. Wysocki wrote:
> From: Rafael J. Wysocki <rjw@...k.pl>
> 
> Make handle_initrd() call try_to_freeze() in a suitable place instead of setting
> PF_NOFREEZE for the current task.
> 
> Signed-off-by: Rafael J. Wysocki <rjw@...k.pl>
> ---
>  init/do_mounts_initrd.c |    5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)
> 
> Index: linux-2.6.21-rc6/init/do_mounts_initrd.c
> ===================================================================
> --- linux-2.6.21-rc6.orig/init/do_mounts_initrd.c
> +++ linux-2.6.21-rc6/init/do_mounts_initrd.c
> @@ -55,11 +55,12 @@ static void __init handle_initrd(void)
>  	sys_mount(".", "/", NULL, MS_MOVE, NULL);
>  	sys_chroot(".");
>  
> -	current->flags |= PF_NOFREEZE;
>  	pid = kernel_thread(do_linuxrc, "/linuxrc", SIGCHLD);
>  	if (pid > 0) {
> -		while (pid != sys_wait4(-1, NULL, 0, NULL))
> +		while (pid != sys_wait4(-1, NULL, 0, NULL)) {
> +			try_to_freeze();
>  			yield();
> +		}
>  	}
>  
>  	/* move initrd to rootfs' /old */

ACK.

Regards,

Nigel

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