linux-kernel - Re: [PATCH] fs: fix undefined behavior in bit shift for SB

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Message-ID: <80107081-1c24-19d3-9a34-0ee61ac7c99d@huawei.com>
Date:   Mon, 31 Oct 2022 21:56:59 +0800
From:   cuigaosheng <cuigaosheng1@...wei.com>
To:     Christoph Hellwig <hch@...radead.org>
CC:     <viro@...iv.linux.org.uk>, <dhowells@...hat.com>,
        <linux-fsdevel@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] fs: fix undefined behavior in bit shift for SB_NOUSER

> Let's mark all of the flags as unsigned instead of just one so that
> we don't mix types.  s_flags is already unsigned (although for some
> reason long) already.
>
> And while you touch this please add the proper whitespaces around the
> shift operator everywhere.

Thanks for taking time to review this patch, I have made patch v2 and submit it.

On 2022/10/31 21:15, Christoph Hellwig wrote:
> Let's mark all of the flags as unsigned instead of just one so that
> we don't mix types.  s_flags is already unsigned (although for some
> reason long) already.
>
> And while you touch this please add the proper whitespaces around the
> shift operator everywhere.