[PATCH -part2 0/3] mm: improve handling of mm->exe_file

[Davidlohr Bueso <dave@stgolabs.net>]

This set addresses exe_file use for users that require the mmap_sem
for other things (mostly looking up the related vma->vm_file). In
a lot of cases we end up with scenarios where we take the mmap_sem in
get_mm_exe_file(), just to then take it again soon after. This is only
temporary as we will remove the need for mmap_sem when dealing with
exe_file.

Applies on top of linux-next (-20150225). The arch bits are entirely
100% untested, so I apologize if there are any stupid build issues.

Thanks!

Davidlohr Bueso (3):
  tile/elf: reorganize notify_exec()
  oprofile: reduce mmap_sem hold for mm->exe_file
  powerpc/oprofile: reduce mmap_sem hold for exe_file

 arch/powerpc/oprofile/cell/spu_task_sync.c | 13 +++++----
 arch/tile/mm/elf.c                         | 47 ++++++++++++++++++------------
 drivers/oprofile/buffer_sync.c             | 30 ++++++++++---------
 3 files changed, 53 insertions(+), 37 deletions(-)

-- 
2.1.4

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