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Date:   Mon, 25 Jan 2021 15:11:11 -0800
From:   Andrew Morton <akpm@linux-foundation.org>
To:     Waiman Long <longman@redhat.com>
Cc:     Miaohe Lin <linmiaohe@huawei.com>, linux-mm@kvack.org,
        linux-kernel@vger.kernel.org, Johannes Weiner <hannes@cmpxchg.org>,
        Alex Shi <alex.shi@linux.alibaba.com>
Subject: Re: [PATCH] mm/filemap: Adding missing mem_cgroup_uncharge() to
 __add_to_page_cache_locked()
Message-Id: <20210125151111.0da207db337a575e5346bd08@linux-foundation.org>
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On Mon, 25 Jan 2021 09:12:56 -0500 Waiman Long <longman@redhat.com> wrote:

> Yes, this patch should go to stable. I think the stable tree maintainers 
> will automatically pick up patches with the "Fixes" tag. That is why I 
> don't explicitly put a "cc:stable" line in the patch.

No.  Both the Fixes: and the cc:stable are needed for the backport. 
Because sometimes we fix things but don't consider the fix important
enough to risk the backport.