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Date:   Wed, 29 Nov 2017 11:33:28 +0100
From:   Giuseppe Scrivano <>
To:     Andrew Morton <>
Subject: Re: [RFC PATCH] ipc, mqueue: lazy call kern_mount_data in new namespaces

Andrew Morton <> writes:

> OK, but this simply moves the expense so it happens later on.  Why is
> that better?

the optimization is for new IPC namespaces that don't use mq_open.  In
this case there won't be any kern_mount_data cost at all.


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