Re: [PATCH RFC] hugetlbfs 'noautofill' mount option

[Prakash Sangappa]

On 6/20/17 4:35 PM, Prakash Sangappa wrote:
> On 6/16/17 6:15 AM, Andrea Arcangeli wrote:
> > Adding a single if (ctx->feature & UFFD_FEATURE_SIGBUS) goto out,
> > branch for this corner case to handle_userfault() isn't great and the
> > hugetlbfs mount option is absolutely zero cost to the handle_userfault
> > which is primarily why I'm not against it.. although it's not going to
> > be measurable so it would be ok also to add such feature.
>
>
> If implementing UFFD_FEATURE_SIGBUS is preferred instead of the mount 
> option, I could look into that.
Implementing UFFD_FEATURE_SIGBUS seems reasonable.

I wanted to note here on this thread that I sent out a seperate
RFC patch review for adding UFFD_FEATURE_SIGBUS.

See,
http://marc.info/?l=linux-mm&m=149857975906880&w=2