linux-kernel - Re: [RFC PATCH 0/1] fs/namespace: defer free_mount from namespace

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Message-ID: <20230119211414.qfkh3hrmupcynrrb@echanude>
Date:   Thu, 19 Jan 2023 16:14:14 -0500
From:   Eric Chanudet <echanude@...hat.com>
To:     Alexander Viro <viro@...iv.linux.org.uk>
Cc:     linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        Alexander Larsson <alexl@...hat.com>,
        Andrew Halaney <ahalaney@...hat.com>
Subject: Re: [RFC PATCH 0/1] fs/namespace: defer free_mount from
 namespace_unlock

On Thu, Jan 19, 2023 at 03:55:20PM -0500, Eric Chanudet wrote:
> We noticed a significant slow down when running a containers on an
> Aarch64 system with the RT patch set using the following test:
> [...]
> With the following patch, namespace_unlock will queue up the resources
> that needs to be released and defer the operation through call_rcu to
> return without waiting for the grace period.

I did not CC:linux-rt-users. Resending with them included, my apologies.

-- 
Eric Chanudet