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Date:   Fri, 22 May 2020 16:47:19 +0100
From:   Al Viro <viro@zeniv.linux.org.uk>
To:     Krzysztof Wilczynski <kw@linux.com>
Cc:     Jeff Layton <jlayton@kernel.org>,
        "J. Bruce Fields" <bfields@fieldses.org>,
        linux-fsdevel@vger.kernel.org
Subject: Re: [PATCH] fs: Remove duplicated flag from VALID_OPEN_FLAGS
Message-ID: <20200522154719.GS23230@ZenIV.linux.org.uk>
References: <20200522133723.1091937-1-kw@linux.com>
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On Fri, May 22, 2020 at 01:37:23PM +0000, Krzysztof Wilczynski wrote:
> From: Krzysztof Wilczyński <kw@linux.com>
> 
> Also, remove extra tab after the FASYNC flag, and keep line under 80
> characters.  This also resolves the following Coccinelle warning:
> 
>   include/linux/fcntl.h:11:13-21: duplicated argument to & or |

Now ask yourself what might be the reason for that "duplicated argument".  
Try to figure out what the values of those constants might depend upon.
For extra points, try to guess what has caused the divergences.

Please, post the result of your investigation in followup to this.