[PATCH 0/14] mm: tmpfs and trunc changes, affecting drm

[Hugh Dickins <hughd@google.com>]

Here's a patchset for mmotm, based on 30-rc1.  Nothing exciting,
mostly cleanup, preparation for what will probably be two more
patchsets coming over the next few weeks, first simplifying tmpfs
by getting rid of its ->readpage (give it a splice instead), then
getting rid of its peculiar swap index (use radix_tree instead).

The ordering here is somewhat illogical, arranged in the hope that
at least the first four can get into 30-rc, which would simplify
the dependencies between linux-next and mmotm.

The first is just an independent fix (I think) noticed on the way.
2,3,4 affect the interface between tmpfs and drm very slightly.
Once they're in 30-rc, drm maintainers could take 5,6,7,8 out of
mmotm and into linux-next (or even 30-rc).

 1/14 mm: invalidate_mapping_pages flush cleancache
 2/14 mm: move vmtruncate_range to truncate.c
 3/14 tmpfs: take control of its truncate_range
 4/14 tmpfs: add shmem_read_mapping_page_gfp
 5/14 drm/ttm: use shmem_read_mapping_page
 6/14 drm/i915: use shmem_read_mapping_page
 7/14 drm/i915: adjust to new truncate_range
 8/14 drm/i915: more struct_mutex locking
 9/14 mm: cleanup descriptions of filler arg
10/14 mm: truncate functions are in truncate.c
11/14 mm: tidy vmtruncate_range and related functions
12/14 mm: consistent truncate and invalidate loops
13/14 mm: pincer in truncate_inode_pages_range
14/14 tmpfs: no need to use i_lock

 drivers/gpu/drm/i915/i915_dma.c      |    3 
 drivers/gpu/drm/i915/i915_gem.c      |   36 ++---
 drivers/gpu/drm/i915/intel_overlay.c |    5 
 drivers/gpu/drm/ttm/ttm_tt.c         |    4 
 include/linux/mm.h                   |    3 
 include/linux/pagemap.h              |   22 ++-
 mm/filemap.c                         |   14 +-
 mm/memory.c                          |   24 ---
 mm/shmem.c                           |   79 +++++++-----
 mm/truncate.c                        |  161 +++++++++++++------------
 10 files changed, 185 insertions(+), 166 deletions(-)

Hugh

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