From: Johannes Weiner <hannes@saeurebad.de>
To: "Peter Teoh" <htmldeveloper@gmail.com>
Cc: LKML <linux-kernel@vger.kernel.org>
Subject: Re: spin_lock after get_cpu_var()
Date: Sun, 16 Mar 2008 11:12:45 +0100 [thread overview]
Message-ID: <87ve3n0yg2.fsf@saeurebad.de> (raw)
In-Reply-To: <804dabb00803160124p1240abe1v842821e988fdeca7@mail.gmail.com> (Peter Teoh's message of "Sun, 16 Mar 2008 16:24:02 +0800")
Hi Peter,
"Peter Teoh" <htmldeveloper@gmail.com> writes:
> I find it quite puzzling (no where else in kernel source is this
> found) that you would want to apply spin_lock() after get_cpu_var().
> The fddef is already percpu, so there is no need to lock it, right?
>
> I submitted this patch before, but got no response, just trying my
> luck this time :-).
http://lkml.org/lkml/2008/3/14/208
Hannes
prev parent reply other threads:[~2008-03-16 10:14 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-03-16 8:24 spin_lock after get_cpu_var() Peter Teoh
2008-03-16 10:12 ` Johannes Weiner [this message]
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=87ve3n0yg2.fsf@saeurebad.de \
--to=hannes@saeurebad.de \
--cc=htmldeveloper@gmail.com \
--cc=linux-kernel@vger.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.