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Re: [dm-devel] [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.


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