Re: current->state after kmalloc

From: Oliver Neukum (520047054719-0001@t-online.de)
Date: Mon Feb 04 2002 - 19:43:21 EST


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
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/



This archive was generated by hypermail 2b29 : Thu Feb 07 2002 - 21:00:39 EST