Re: vdso && f_op->mremap (Was: special_mapping_fault() is broken)

Oleg Nesterov
2015-06-23T17:04:58Z

On 06/23, Pavel Emelyanov wrote:
>
> On 06/23/2015 03:47 AM, Oleg Nesterov wrote:
>
> > Afaics. Still, I think we might want to have special_mapping_remap()
> > and we can't do this because ->vm_file == NULL.
>
> For aio (the single for now mapping with mremap callback) the vm_file
> is not NULL.

I meant, vdso can't hook ->remap because vm_file is NULL.

> > In short. Shouldn't we move ->mremap() to vm_operations_struct before
> > it has another user? We need to fix aio.c, but this is trivial.
> >
> > No?
>
> I will be OK with this change :)

OK, nobody objects, I'll send a patch...

Oleg.