linux-kernel - Re: [PATCH] init/do_mounts: Add create

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Message-ID: <20150526062534.GA11401@amd>
Date:	Tue, 26 May 2015 08:25:34 +0200
From:	Pavel Machek <pavel@....cz>
To:	Vishnu Pratap Singh <vishnu.ps@...sung.com>
Cc:	paul.gortmaker@...driver.com, snitzer@...hat.com,
	dehrenberg@...omium.org, akpm@...ux-foundation.org,
	mszeredi@...e.cz, linux-kernel@...r.kernel.org, cpgs@...sung.com
Subject: Re: [PATCH] init/do_mounts: Add create_dev() failure log

On Mon 2015-05-25 19:19:43, Vishnu Pratap Singh wrote:
> if create_dev() function fails to create the root mount device (/dev/root),
> then it goes to panic as root device not found but there is no check/log
> present in case of failure, So i have added the log in case it fails to create
> the root device. It will help in debugging.
> 
> Signed-off-by: Vishnu Pratap Singh <vishnu.ps@...sung.com>
> ---
>  init/do_mounts.c |    3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/init/do_mounts.c b/init/do_mounts.c
> index 8369ffa..a68aaf6 100644
> --- a/init/do_mounts.c
> +++ b/init/do_mounts.c
> @@ -532,7 +532,8 @@ void __init mount_root(void)
>  	}
>  #endif
>  #ifdef CONFIG_BLOCK
> -	create_dev("/dev/root", ROOT_DEV);
> +	if(create_dev("/dev/root", ROOT_DEV) < 0)
> +		printk(KERN_ERR "Failed to create %s device !!\n", "/dev/root");

No change, AFAICT. Please fix stuff I pointed in the email, and you
can get my acked-by ;-).
									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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