Re: [PATCH] cryptoapi: Fix sleeping

[Jeff Garzik <jgarzik@pobox.com>]

Matt Mackall wrote:
> We need in_atomic() so that we can call from regions where preempt is
> disabled, for instance when using per_cpu crypto tfms.
> 
> diff -urN -X dontdiff orig/crypto/internal.h work/crypto/internal.h
> --- orig/crypto/internal.h	2003-07-13 22:29:11.000000000 -0500
> +++ work/crypto/internal.h	2003-08-12 14:38:54.000000000 -0500
> @@ -37,7 +37,7 @@
>  
>  static inline void crypto_yield(struct crypto_tfm *tfm)
>  {
> -	if (!in_softirq())
> +	if (!in_atomic())
>  		cond_resched();


Do you really want to schedule inside preempt_disable() ?

As an aside, I think it would be nice if cond_resched could figure out 
for itself whether it is ok to schedule().  Completely eliminate the 
above test entirely, moving it into cond_resched().

	Jeff