From mboxrd@z Thu Jan  1 00:00:00 1970
From: mike@flyn.org (W. Michael Petullo)
Date: Thu, 26 May 2016 00:28:19 -0400
Subject: Identify tasks which mmap'ed file
Message-ID: <20160526042818.GA5691@imp.flyn.org>
To: kernelnewbies@lists.kernelnewbies.org
List-Id: kernelnewbies.lists.kernelnewbies.org

Within the kernel and given a struct file *, is it possible to enumerate
the tasks which have mmap/MAP_SHARED'ed the file? I have tried to use
find_get_pages/rmap_walk on the file's f_mapping field, but this does
not seem to work. I find the mapping's first page with find_get_pages,
but rmap_walk does not seem to find any vma's as rmap_walk never calls
the callback function I pass in.

Thank you,

-- 
Mike

:wq