Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
Date:   Wed, 10 Mar 2021 15:58:36 -0800
From:   Andrew Morton <akpm@linux-foundation.org>
To:     ira.weiny@intel.com
Cc:     David Sterba <dsterba@suse.com>, Chris Mason <clm@fb.com>,
        Josef Bacik <josef@toxicpanda.com>,
        linux-btrfs@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 0/3] btrfs: Convert kmap/memset/kunmap to memzero_user()
Message-Id: <20210310155836.7d63604e28d746ef493c1882@linux-foundation.org>
In-Reply-To: <20210309212137.2610186-1-ira.weiny@intel.com>
References: <20210309212137.2610186-1-ira.weiny@intel.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
Precedence: bulk

On Tue,  9 Mar 2021 13:21:34 -0800 ira.weiny@intel.com wrote:

> Previously this was submitted to convert to zero_user()[1].  zero_user() is not
> the same as memzero_user() and in fact some zero_user() calls may be better off
> as memzero_user().  Regardless it was incorrect to convert btrfs to
> zero_user().
> 
> This series corrects this by lifting memzero_user(), converting it to
> kmap_local_page(), and then using it in btrfs.

This impacts btrfs more than MM.  I suggest the btrfs developers grab
it, with my

Acked-by: Andrew Morton <akpm@linux-foundation.org>