linux-kernel - Re: [PATCH v2 02/10] mm, hugetlb: remove err label in dequeue_huge_page

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20130723072724.GA2266@lge.com>
Date:	Tue, 23 Jul 2013 16:27:24 +0900
From:	Joonsoo Kim <iamjoonsoo.kim@....com>
To:	Michal Hocko <mhocko@...e.cz>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Rik van Riel <riel@...hat.com>, Mel Gorman <mgorman@...e.de>,
	"Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Hugh Dickins <hughd@...gle.com>,
	Davidlohr Bueso <davidlohr.bueso@...com>,
	David Gibson <david@...son.dropbear.id.au>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 02/10] mm, hugetlb: remove err label in
 dequeue_huge_page_vma()

On Mon, Jul 22, 2013 at 06:11:11PM +0200, Michal Hocko wrote:
> On Mon 22-07-13 17:36:23, Joonsoo Kim wrote:
> > This label is not needed now, because there is no error handling
> > except returing NULL.
> > 
> > Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@....com>
> > 
> > diff --git a/mm/hugetlb.c b/mm/hugetlb.c
> > index fc4988c..d87f70b 100644
> > --- a/mm/hugetlb.c
> > +++ b/mm/hugetlb.c
> > @@ -546,11 +546,11 @@ static struct page *dequeue_huge_page_vma(struct hstate *h,
> >  	 */
> >  	if (!vma_has_reserves(vma) &&
> >  			h->free_huge_pages - h->resv_huge_pages == 0)
> > -		goto err;
> > +		return NULL;
> >  
> >  	/* If reserves cannot be used, ensure enough pages are in the pool */
> >  	if (avoid_reserve && h->free_huge_pages - h->resv_huge_pages == 0)
> > -		goto err;
> > +		return NULL;
> >  
> >  retry_cpuset:
> >  	cpuset_mems_cookie = get_mems_allowed();
> > @@ -573,9 +573,6 @@ retry_cpuset:
> >  	if (unlikely(!put_mems_allowed(cpuset_mems_cookie) && !page))
> >  		goto retry_cpuset;
> >  	return page;
> > -
> > -err:
> > -	return NULL;
> 
> This doesn't give us anything IMO. It is a matter of taste but if there
> is no cleanup I would prefer no err label.

Okay. If this patchset need respin, I will omit this one.

Thanks.

> -- 
> Michal Hocko
> SUSE Labs
> 
> --
> To unsubscribe, send a message with 'unsubscribe linux-mm' in
> the body to majordomo@...ck.org.  For more info on Linux MM,
> see: http://www.linux-mm.org/ .
> Don't email: <a href=mailto:"dont@...ck.org"> email@...ck.org </a>
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/