Re: [RFC PATCH 3/3] mm, proc: report PR_SET_THP_DISABLE in proc

On Mon 26-11-18 17:33:32, William Kucharski wrote:

This determines whether the page can theoretically be THP-mapped , but
is the intention to also check for proper alignment and/or preexisting
PAGESIZE page cache mappings for the address range?

This is only about the process wide flag to disable THP. I do not see
how this can be alighnement related. I suspect you wanted to ask in the
smaps patch?

I'm having to deal with both these issues in the text page THP
prototype I've been working on for some time now.

Could you be more specific about the issue and how the alignment comes
into the game? The only thing I can think of is to not report VMAs
smaller than the THP as eligible. Is this what you are looking for?
-- 
Michal Hocko
SUSE Labs