Re: [PATCH] mm: mempolicy: turn vma_set_policy() intovma_dup_policy()

[Andrew Morton]

On Thu, 11 Jul 2013 15:13:03 -0700 (PDT) David Rientjes <rientjes@xxxxxxxxxx> wrote:

> > +int vma_dup_policy(struct vm_area_struct *src, struct vm_area_struct *dst)
> > +{
> > +	struct mempolicy *pol = mpol_dup(vma_policy(src));
> > +
> > +	if (IS_ERR(pol))
> > +		return PTR_ERR(pol);
> 
> PTR_ERR() returns long, so vma_dup_policy() needs to return long.

hm, really?  vma_dup_policy() returns an errno and errnos have type "int".

Arguably it is PTR_ERR() which returns the wrong type...
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