From: Giuseppe Scrivano <gscrivan@redhat.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: linux-kernel@vger.kernel.org, gregkh@linuxfoundation.org,
mingo@kernel.org, dave@stgolabs.net
Subject: Re: [RFC PATCH] ipc, mqueue: lazy call kern_mount_data in new namespaces
Date: Wed, 29 Nov 2017 11:33:28 +0100 [thread overview]
Message-ID: <87wp29l6h3.fsf@redhat.com> (raw)
In-Reply-To: <20171128135316.6d7bba7fe909ba3d90e318db@linux-foundation.org> (Andrew Morton's message of "Tue, 28 Nov 2017 13:53:16 -0800")
Andrew Morton <akpm@linux-foundation.org> 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.
Regards,
Giuseppe
next prev parent reply other threads:[~2017-11-29 10:33 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-11-27 12:55 [RFC PATCH] ipc, mqueue: lazy call kern_mount_data in new namespaces Giuseppe Scrivano
2017-11-28 7:09 ` Davidlohr Bueso
2017-11-28 21:53 ` Andrew Morton
2017-11-29 10:33 ` Giuseppe Scrivano [this message]
2017-11-29 22:17 ` Andrew Morton
2017-11-30 12:20 ` Giuseppe Scrivano
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=87wp29l6h3.fsf@redhat.com \
--to=gscrivan@redhat.com \
--cc=akpm@linux-foundation.org \
--cc=dave@stgolabs.net \
--cc=gregkh@linuxfoundation.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.