From: Joe Korty <joe.korty@ccur.com>
To: Rob Love <rml@ximian.com>
Cc: William Lee Irwin III <wli@holomorphy.com>,
Albert Cahalan <albert@users.sourceforge.net>,
linux-kernel mailing list <linux-kernel@vger.kernel.org>
Subject: Re: atomic copy_from_user?
Date: Mon, 22 Dec 2003 17:06:11 -0500 [thread overview]
Message-ID: <20031222220610.GA3451@rudolph.ccur.com> (raw)
In-Reply-To: <1072126506.3318.31.camel@fur>
On Mon, Dec 22, 2003 at 03:55:06PM -0500, Rob Love wrote:
> On Mon, 2003-12-22 at 13:26, Joe Korty wrote:
>
> > Shouldn't the dec_prempt_count() in kunmap_atomic() be followed
> > by a preempt_check_resched()???
>
> Probably.
>
> Actually, dec_preempt_count() ought to call preempt_check_resched()
> itself. In the case of !CONFIG_PREEMPT, that call would simply optimize
> away.
>
> Attached patch is against 2.6.0.
If this is done then preempt_enable_no_resched() and preempt_enable() also
need to be adjusted, as they both call dec_preempt_count().
Joe
next prev parent reply other threads:[~2003-12-22 22:06 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-12-22 0:48 atomic copy_from_user? Albert Cahalan
2003-12-22 4:31 ` Linus Torvalds
2003-12-22 9:36 ` Andrew Morton
2003-12-22 15:00 ` William Lee Irwin III
2003-12-22 18:26 ` Joe Korty
2003-12-22 20:55 ` Rob Love
2003-12-22 21:22 ` Joe Korty
2003-12-22 21:40 ` Rob Love
2003-12-22 21:59 ` Joe Korty
2003-12-22 22:14 ` Rob Love
2003-12-22 22:24 ` Andrew Morton
2003-12-22 22:06 ` Joe Korty [this message]
2003-12-22 22:18 ` Rob Love
2003-12-22 22:14 ` Andrew Morton
2003-12-22 22:19 ` Rob Love
2003-12-22 22:35 ` Joe Korty
2003-12-22 22:59 ` Rob Love
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