Re: [PATCH 4/6] xfs: use memdup_user()

Li Zefan
2009-04-09T00:43:23Z

Roland Dreier wrote:
> > wouldn't NULL be a better error return for this kind of interface,
> > matching kmalloc?
>
> I guess returning an error code from memdup_user() lets callers
> distinguish between ENOMEM and EFAULT. Not sure if that's important or
> not but there probably are at least some sites that care.
>

Right, and this API is simlilar to strndup_user().