linux-kernel - Re: [PATCH v2 07/14] pktcdvd: Switch to bio

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: <20120524195549.GA18624@google.com>
Date:	Thu, 24 May 2012 12:55:49 -0700
From:	Kent Overstreet <koverstreet@...gle.com>
To:	Vivek Goyal <vgoyal@...hat.com>
Cc:	linux-kernel@...r.kernel.org, linux-bcache@...r.kernel.org,
	dm-devel@...hat.com, linux-fsdevel@...r.kernel.org, tj@...nel.org,
	axboe@...nel.dk, agk@...hat.com, neilb@...e.de,
	drbd-dev@...ts.linbit.com, bharrosh@...asas.com,
	mpatocka@...hat.com, sage@...dream.net, yehuda@...newdream.net
Subject: Re: [PATCH v2 07/14] pktcdvd: Switch to bio_kmalloc()

On Thu, May 24, 2012 at 03:42:52PM -0400, Vivek Goyal wrote:
> On Wed, May 23, 2012 at 05:02:44PM -0700, Kent Overstreet wrote:
> 
> [..]
> > @@ -567,10 +569,13 @@ static struct packet_data *pkt_alloc_packet_data(int frames)
> >  		goto no_pkt;
> >  
> >  	pkt->frames = frames;
> > -	pkt->w_bio = pkt_bio_alloc(frames);
> > +	pkt->w_bio = bio_kmalloc(GFP_KERNEL, frames);
> 
> So previously bios allocated were being kfreed by pkt_bio_destructor().
> Now where are we doing kfree() on bio being allocated by bio_kmalloc()?

bio_kmalloc() sets up bi_destructor, so there's no need to kfree() the
bio - bio_put() frees it just like normal.
--
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/