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SubjectRe: [PATCH 08/20] lightnvm: pblk: sched. metadata on write thread
On Wed, Sep 20, 2017 at 09:28:34PM +0300, Rakesh Pandit wrote:
> Hi Javier,
>
> one small issue I found for error path while going through changes:
>
> On Mon, Jun 26, 2017 at 11:57:17AM +0200, Javier González wrote:
> ..
> > +static int pblk_lines_alloc_metadata(struct pblk *pblk)
> > +{
[..]
> > + if (!l_mg->sline_meta[i])
> > + goto fail_free_smeta;
>
> For this error path the the goto label at end doesn't free up
> resources correctly. It needs a
>
> while (--index >= 0)...
>
> logic with appropriate adjustment.
>
> > + }
[..]
> > + if (!l_mg->vsc_list)
> > + goto fail_free_emeta;
> > +
> > + for (i = 0; i < l_mg->nr_lines; i++)
> > + l_mg->vsc_list[i] = cpu_to_le32(EMPTY_ENTRY);
> > +
> > + return 0;
> > +
> > +fail_free_emeta:
> > + while (--i >= 0) {
> > + vfree(l_mg->eline_meta[i]->buf);
>
> This would need l_mg->emeta_alloc_type check to decide whether
> allocation was done with kmalloc or vmalloc.
>
> > + kfree(&l_mg->eline_meta[i]);
> > + }
> > +
> > +fail_free_smeta:
> > + for (i = 0; i < PBLK_DATA_LINES; i++)
> > + pblk_mfree(&l_mg->sline_meta[i], l_mg->smeta_alloc_type);
> > +
> > + return -ENOMEM;
> > +}
> > +
>
> Thanks,

I failed to see earlier that it has been merged already. Will post a
patch in a while.

Thanks,

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