Re: kmalloc without GFP_xxx?
From: Arjan van de Ven
Date: Wed Jun 29 2005 - 06:38:53 EST
On Wed, 2005-06-29 at 14:20 +0300, Denis Vlasenko wrote:
> On Wednesday 29 June 2005 14:15, Arjan van de Ven wrote:
> > On Wed, 2005-06-29 at 14:02 +0300, Denis Vlasenko wrote:
> > > Hi,
> > > It struck me that kernel actually can figure out whether it's okay
> > > to sleep or not by looking at combination of (flags & __GFP_WAIT)
> > > and ((in_atomic() || irqs_disabled()) as it already does this for
> > > might_sleep() barfing:
> > that is not enough.
> > you could be holding a spinlock for example!
> > (and no that doesn't set in_atomic() always)
> but it sets irqs_disabled() IIRC.
only spin_lock_irq() and co do.
not the simple spin_lock()
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