From: ddvlad@rosedu.org (Vlad Dogaru)
To: kernelnewbies@lists.kernelnewbies.org
Subject: anyone know what a "lockless ioctl" is?
Date: Fri, 25 May 2012 16:44:00 +0300 [thread overview]
Message-ID: <CAA+rx9TG-MFhMffXYdttTW1RCpm3_mJP=LTf2tNYi-1aA7S62w@mail.gmail.com> (raw)
In-Reply-To: <alpine.DEB.2.02.1205250934480.28408@oneiric>
On Fri, May 25, 2012 at 4:36 PM, Robert P. J. Day <rpjday@crashcourse.ca> wrote:
>
> ?reading a course outline and there's a reference to "lockless
> ioctls". ?no idea what that is, and google doesn't make it any
> clearer:
>
> http://www.google.ca/#hl=en&sclient=psy-ab&q=%22lockless+ioctl%22&oq=%22lockless+ioctl%22&aq=f&aqi=&aql=&gs_l=hp.3...1480.3588.0.3748.16.16.0.0.0.0.221.1642.10j5j1.16.0...0.0.noPYe58Fdcg&pbx=1&bav=on.2,or.r_gc.r_pw.r_qf.,cf.osb&fp=f4bd7f4bc3a9df92&biw=1060&bih=925
>
> did such a thing ever exist?
All ioctls are unlocked, now that the BKL is gone. You can read more
about it, including relevant lwn links, at [1].
[1] http://unix.stackexchange.com/questions/4711/what-is-the-difference-between-ioctl-unlocked-ioctl-and-compat-ioctl
HTH,
Vlad
prev parent reply other threads:[~2012-05-25 13:44 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-25 13:36 anyone know what a "lockless ioctl" is? Robert P. J. Day
2012-05-25 13:44 ` Vlad Dogaru [this message]
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