linux-kernel - Re: [PATCH] docs: lockdep-design: improve readability of the block matrix

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Message-ID: <6677ed15-4ae3-650d-bbfd-5b5436f3741b@redhat.com>
Date:   Thu, 27 May 2021 09:37:59 -0400
From:   Waiman Long <llong@...hat.com>
To:     Xiongwei Song <sxwjean@...com>, peterz@...radead.org,
        mingo@...hat.com, will@...nel.org, boqun.feng@...il.com,
        corbet@....net
Cc:     linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
        Xiongwei Song <sxwjean@...il.com>
Subject: Re: [PATCH] docs: lockdep-design: improve readability of the block
 matrix

On 5/24/21 11:05 AM, Xiongwei Song wrote:
> From: Xiongwei Song <sxwjean@...il.com>
>
> The block condition matrix is using 'E' as the writer notation, however,
> the writer reminder below the matrix is using 'W', to make them consistent
> and make the matrix more readable, we'd better to use 'W' to represent
> writer.
>
> Suggested-by: Waiman Long <llong@...hat.com>
> Suggested-by: Boqun Feng <boqun.feng@...il.com>
> Signed-off-by: Xiongwei Song <sxwjean@...il.com>
> ---
>   Documentation/locking/lockdep-design.rst | 4 ++--
>   1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/Documentation/locking/lockdep-design.rst b/Documentation/locking/lockdep-design.rst
> index 9f3cfca..82f36ca 100644
> --- a/Documentation/locking/lockdep-design.rst
> +++ b/Documentation/locking/lockdep-design.rst
> @@ -453,9 +453,9 @@ There are simply four block conditions:
>   Block condition matrix, Y means the row blocks the column, and N means otherwise.
>   
>   	+---+---+---+---+
> -	|   | E | r | R |
> +	|   | W | r | R |
>   	+---+---+---+---+
> -	| E | Y | Y | Y |
> +	| W | Y | Y | Y |
>   	+---+---+---+---+
>   	| r | Y | Y | N |
>   	+---+---+---+---+

Acked-by: Waiman Long <longman@...hat.com>