Re: [PATCH] tmem: propagate ENOMEM result in error handling

[Konrad Rzeszutek Wilk <konrad@darnok.org>]

On Mon, Mar 31, 2014 at 05:09:33AM +0800, Bob Liu wrote:
> 
> On 03/29/2014 01:07 PM, Matthew Daley wrote:
> > ...otherwise if pcd_associate fails due to out-of-memory, the caller of
> > do_tmem_put will think the call was successful.
> > 
> 
> Good catch! Thanks a lot!
> 
> > While at it, fix up the style issue.
> > 
> > Signed-off-by: Matthew Daley <mattd@bugfuzz.com>
> 
> Reviewed-by: Bob Liu <bob.liu@oracle.com>

Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

Thanks!
> 
> > ---
> >  xen/common/tmem.c | 5 ++++-
> >  1 file changed, 4 insertions(+), 1 deletion(-)
> > 
> > diff --git a/xen/common/tmem.c b/xen/common/tmem.c
> > index 02e7e2e..9cebe11 100644
> > --- a/xen/common/tmem.c
> > +++ b/xen/common/tmem.c
> > @@ -1646,8 +1646,11 @@ copy_uncompressed:
> >  
> >      if ( tmem_dedup_enabled() && !is_persistent(pool) )
> >      {
> > -        if ( pcd_associate(pgp,NULL,0) == -ENOMEM )
> > +        if ( pcd_associate(pgp, NULL, 0) == -ENOMEM )
> > +        {
> > +            ret = -ENOMEM;
> >              goto del_pgp_from_obj;
> > +        }
> >      }
> >  
> >  insert_page:
> > 
> 
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