mm: use new helper functions around the i_mmap_mutex

Convert all open coded mutex_lock/unlock calls to the
i_mmap_[lock/unlock]_write() helpers.

Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Acked-by: Rik van Riel <riel@redhat.com>
Acked-by: "Kirill A. Shutemov" <kirill@shutemov.name>
Acked-by: Hugh Dickins <hughd@google.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Acked-by: Mel Gorman <mgorman@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --cc fs/hugetlbfs/inode.c
Simple merge

diff --cc kernel/events/uprobes.c
Simple merge

diff --cc kernel/fork.c
Simple merge

diff --cc mm/filemap_xip.c
Simple merge

diff --cc mm/fremap.c
Simple merge

diff --cc mm/hugetlb.c
Simple merge

diff --cc mm/memory-failure.c
Simple merge

diff --cc mm/memory.c
Simple merge

diff --cc mm/mmap.c
Simple merge

diff --cc mm/mremap.c
Simple merge

diff --cc mm/nommu.c
Simple merge

diff --cc mm/rmap.c
Simple merge