From: 520047054719-0001@t-online.de (Oliver Neukum)
To: arjan@fenrus.demon.nl
Cc: linux-kernel@vger.kernel.org
Subject: Re: current->state after kmalloc
Date: Tue, 5 Feb 2002 01:43:21 +0100 [thread overview]
Message-ID: <16Xthq-147i9wC@fwd04.sul.t-online.com> (raw)
In-Reply-To: <m16XtOG-000OVeC@amadeus.home.nl>
In-Reply-To: <m16XtOG-000OVeC@amadeus.home.nl>
On Tuesday 05 February 2002 01:23, arjan@fenrus.demon.nl wrote:
> In article <16Xt8Y-1SQ44eC@fwd04.sul.t-online.com> you wrote:
> > set_current_state(TASK_INTERRUPTIBLE);
> > kmalloc(sizeof(struct x), GFP_KERNEL);
> >
> > what is current->state after kmalloc ?
>
> undefined. If kmalloc slept and you survived (due to setting
> TASK_INTERRUPTIBLE that's not guaranteed) then it'll most likely be
> TASK_RUNNING.
> If you depend on this your kernel code is broken in that has subtle
> dependencies on unspecified behavior and will break whenever kmalloc
> changes internal behavior.
Is it safe with GFP_ATOMIC ?
Regards
Oliver
next prev parent reply other threads:[~2002-02-05 0:44 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-02-05 0:06 Oliver Neukum
2002-02-05 0:23 ` arjan
2002-02-05 0:43 ` Oliver Neukum [this message]
2002-02-05 0:50 ` Robert Love
2002-02-05 1:08 ` Oliver Neukum
2002-02-05 8:16 ` arjan
2002-02-05 8:35 ` Oliver Neukum
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