Re: [PATCH v2] mm/uffd: UFFD_FEATURE_WP_UNPOPULATED

[Peter Xu]

On Thu, Mar 02, 2023 at 08:14:05PM +0500, Muhammad Usama Anjum wrote:
> I've heard about a use case where a file of size 10s of GBs can be mapped
> to the memory and then accessed off and on. We need to handle this
> correctly and efficiently.

Note again that besides any slowness it'll stop working for generic FSs.

One way is we can consider enabling uffd-wp async for all archs, but I need
to think more about it, and it will not be compatible with any other modes.

-- 
Peter Xu