On Wed, 22 Jul 2015, Davidlohr Bueso wrote:

fwiw, I've been trying to push people towards this for a while. Ie:

commit 15610c86fa83ff778eb80d3cfaa71d6acceb628a
Author: Davidlohr Bueso [off-list ref]
Date:   Wed Sep 11 14:21:48 2013 -0700

    hugepage: mention libhugetlbfs in doc
    
    Explicitly mention/recommend using the libhugetlbfs test cases when
    changing related kernel code.  Developers that are unaware of the project
    can easily miss this and introduce potential regressions that may or may
    not be caught by community review.
    
    Also do some cleanups that make the document visually easier to view at a
    first glance.
    
    Signed-off-by: Davidlohr Bueso [off-list ref]
    Signed-off-by: Andrew Morton [off-list ref]
    Signed-off-by: Linus Torvalds [off-list ref]

But generally speaking, I doubt this doc is read much.

The mmap(2) man page cites it specifically as the source of information on 
MAP_HUGETLB and it, in turn, directs people to 
tools/testing/selftests/vm/map_hugetlb.c.  It also mentions libhugetlbfs 
as a result of your patch, so perhaps change the man page to point people 
directly there?

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