UPSTREAM: filemap: pass vm_fault to the mmap ra helpers

All of the arguments to these functions come from the vmf.

Cut down on the amount of arguments passed by simply passing in the vmf
to these two helpers.

Bug: 124328118
Change-Id: I874f8320d8393f2e39aab030fcf43e51c882e90a
Link: http://lkml.kernel.org/r/20181211173801.29535-3-josef@toxicpanda.com


Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Jan Kara <jack@suse.cz>
Cc: Dave Chinner <david@fromorbit.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: "Kirill A. Shutemov" <kirill@shutemov.name>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
(cherry picked from commit 2a1180f1bd389e9d47693e5eb384b95f482d8d19)
Signed-off-by: Minchan Kim <minchan@google.com>