Re: [PATCH 6/6] drivers/IB,core: reduce scope of mmap_sem

[Matthew Wilcox <willy@xxxxxxxxxxxxx>]

On Tue, Jan 15, 2019 at 08:53:16PM +0000, Jason Gunthorpe wrote:
> > -	new_pinned = atomic_long_read(&mm->pinned_vm) + npages;
> > +	new_pinned = atomic_long_add_return(npages, &mm->pinned_vm);
> >  	if (new_pinned > lock_limit && !capable(CAP_IPC_LOCK)) {
> 
> I thought a patch had been made for this to use check_overflow...

That got removed again by patch 1 ...