linux-kernel - Re: [PATCH] mm/filemap: Adding missing mem_cgroup_uncharge() to __add_to_page_cache

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Date:   Mon, 25 Jan 2021 15:11:11 -0800
From:   Andrew Morton <akpm@...ux-foundation.org>
To:     Waiman Long <longman@...hat.com>
Cc:     Miaohe Lin <linmiaohe@...wei.com>, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org, Johannes Weiner <hannes@...xchg.org>,
        Alex Shi <alex.shi@...ux.alibaba.com>
Subject: Re: [PATCH] mm/filemap: Adding missing mem_cgroup_uncharge() to
 __add_to_page_cache_locked()

On Mon, 25 Jan 2021 09:12:56 -0500 Waiman Long <longman@...hat.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.