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Date:   Fri, 21 Aug 2020 09:29:53 -0700
From:   Shakeel Butt <>
To:     Roman Gushchin <>
Cc:, netdev <>,
        Alexei Starovoitov <>,
        Daniel Borkmann <>,
        Kernel Team <>,
        LKML <>,
        Johannes Weiner <>,
        Linux MM <>
Subject: Re: [PATCH bpf-next v4 01/30] mm: support nesting memalloc_use_memcg()

On Fri, Aug 21, 2020 at 8:01 AM Roman Gushchin <> wrote:
> From: Johannes Weiner <>
> Support nesting of memalloc_use_memcg() to be able to use
> from an interrupt context.
> Make memalloc_use_memcg() return the old memcg and convert existing
> users to a stacking model. Delete the unused memalloc_unuse_memcg().
> Roman: I've rephrased the original commit log, because it was
> focused on the accounting problem related to loop devices. I made
> it less specific, so it can work for bpf too. Also rebased to the
> current state of the mm tree.
> The original patch can be found here:
> Signed-off-by: Johannes Weiner <>
> Signed-off-by: Roman Gushchin <>

Reviewed-by: Shakeel Butt <>

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