Jens Axboe <[email protected]> wrote:
>
> On Mon, Jun 27 2005, Andrew Morton wrote:
> > Jeff Garzik <[email protected]> wrote:
> > >
> > >
> > > In latest git tree...
> > >
> > > CC [M] drivers/block/cfq-iosched.o
> > > drivers/block/cfq-iosched.c: In function `cfq_put_queue':
> > > drivers/block/cfq-iosched.c:303: sorry, unimplemented: inlining failed
> > > in call to 'cfq_pending_requests': function body not available
> > > drivers/block/cfq-iosched.c:1080: sorry, unimplemented: called from here
> > > drivers/block/cfq-iosched.c: In function `__cfq_may_queue':
> > > drivers/block/cfq-iosched.c:1955: warning: the address of
> > > `cfq_cfqq_must_alloc_slice', will always evaluate as `true'
> > > make[2]: *** [drivers/block/cfq-iosched.o] Error 1
> > > make[1]: *** [drivers/block] Error 2
> > > make: *** [drivers] Error 2
> >
> > hm. The inline thing is trivial, but the misuse of
> > cfq_cfqq_must_alloc_slice() means that we now wander into untested
> > territory.
>
> Indeed, which compiler errors on that?
4.0 and later, I guess.
> > @@ -1969,7 +1968,7 @@ __cfq_may_queue(struct cfq_data *cfqd, s
> > * only allow 1 ELV_MQUEUE_MUST per slice, otherwise we
> > * can quickly flood the queue with writes from a single task
> > */
> > - if (rw == READ || !cfq_cfqq_must_alloc_slice) {
> > + if (rw == READ || !cfq_cfqq_must_alloc_slice(cfqq)) {
> > cfq_mark_cfqq_must_alloc_slice(cfqq);
> > return ELV_MQUEUE_MUST;
> > }
>
> thanks, clearly a typo but inside if 0.
But the other instance was inside `#if 1'. This fixup will change behaviour.
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