linux-kernel - Re: [PATCH] docs: lockdep-design: correct the notation for writer

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Date:   Fri, 21 May 2021 16:55:05 +0800
From:   Boqun Feng <boqun.feng@...il.com>
To:     Xiongwei Song <sxwjean@...com>
Cc:     peterz@...radead.org, mingo@...hat.com, will@...nel.org,
        longman@...hat.com, corbet@....net, linux-kernel@...r.kernel.org,
        linux-doc@...r.kernel.org, Xiongwei Song <sxwjean@...il.com>
Subject: Re: [PATCH] docs: lockdep-design: correct the notation for writer

On Fri, May 21, 2021 at 02:29:54PM +0800, Xiongwei Song wrote:
> From: Xiongwei Song <sxwjean@...il.com>
> 
> The block condition matrix is using 'E' as the writer noation here, so it
> would be better to use 'E' as the reminder rather than 'W'.
> 

Good catch!

> Signed-off-by: Xiongwei Song <sxwjean@...il.com>

Reviewed-by: Boqun Feng <boqun.feng@...il.com>

Regards,
Boqun

> ---
>  Documentation/locking/lockdep-design.rst | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/Documentation/locking/lockdep-design.rst b/Documentation/locking/lockdep-design.rst
> index 9f3cfca..c3b923a 100644
> --- a/Documentation/locking/lockdep-design.rst
> +++ b/Documentation/locking/lockdep-design.rst
> @@ -462,7 +462,7 @@ Block condition matrix, Y means the row blocks the column, and N means otherwise
>  	| R | Y | Y | N |
>  	+---+---+---+---+
>  
> -	(W: writers, r: non-recursive readers, R: recursive readers)
> +	(E: writers, r: non-recursive readers, R: recursive readers)
>  
>  
>  acquired recursively. Unlike non-recursive read locks, recursive read locks
> -- 
> 2.7.4
>