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Date:   Tue, 12 May 2020 06:35:45 -0700
From:   Christoph Hellwig <hch@infradead.org>
To:     Dan Schatzberg <schatzberg.dan@gmail.com>
Cc:     Jens Axboe <axboe@kernel.dk>,
        Alexander Viro <viro@zeniv.linux.org.uk>,
        Jan Kara <jack@suse.cz>, Amir Goldstein <amir73il@gmail.com>,
        Tejun Heo <tj@kernel.org>, Li Zefan <lizefan@huawei.com>,
        Johannes Weiner <hannes@cmpxchg.org>,
        Michal Hocko <mhocko@kernel.org>,
        Vladimir Davydov <vdavydov.dev@gmail.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        Hugh Dickins <hughd@google.com>, Roman Gushchin <guro@fb.com>,
        Shakeel Butt <shakeelb@google.com>,
        Chris Down <chris@chrisdown.name>,
        Yang Shi <yang.shi@linux.alibaba.com>,
        Ingo Molnar <mingo@kernel.org>,
        "Peter Zijlstra (Intel)" <peterz@infradead.org>,
        Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
        "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
        Andrea Arcangeli <aarcange@redhat.com>,
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        <linux-mm@kvack.org>
Subject: Re: [PATCH v5 0/4] Charge loop device i/o to issuing cgroup
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On Tue, May 12, 2020 at 09:25:21AM -0400, Dan Schatzberg wrote:
> Seems like discussion on this patch series has died down. There's been
> a concern raised that we could generalize infrastructure across loop,
> md, etc. This may be possible, in the future, but it isn't clear to me
> how this would look like. I'm inclined to fix the existing issue with
> loop devices now (this is a problem we hit at FB) and address
> consolidation with other cases if and when those are addressed.
> 
> Jens, you've expressed interest in seeing this series go through the
> block tree so I'm interested in your perspective here. Barring any
> concrete implementation bugs, would you be okay merging this version?

Independ of any higher level issues you need to sort out the spinlock
mess I pointed out.