[CRIU] [PATCH 0/7] revert zero pagemaps

[Mike Rapoport]

Hi,

After all the effort I've put into adding zero pagemap entries, we've found
out that they are pretty much useless.
We anyway have to rely on the assumption that parts of a VMA not covered by
the pagemap have to be UFFDIO_ZERO'ed.
That said, the patches below "revert" addition of the zero pagemaps. Yet,
I've kept the ability to have flags for hole entries in the pagemap, just
in case we'll ever need them :)

Mike Rapoport (7):
  lazy-pages: zero out pages not covered by the pagemap
  lazy-pages: stop checking for zero pagemaps
  pagemap: seek_pagemap: drop skip_zero parameter
  Drop support for zero pagemap entries
  stats: drop zero pages stats
  mem: provide inline versions for page_{in_parent,is_zero}
  page-pipe: drop unused PP_HOLE_ZERO flag

 criu/cr-dedup.c          |  2 +-
 criu/include/page-pipe.h |  1 -
 criu/include/pagemap.h   | 15 ++++----------
 criu/include/stats.h     |  1 -
 criu/mem.c               | 52 +++++++++++++++++++++++++++---------------------
 criu/page-xfer.c         | 17 ++++------------
 criu/pagemap.c           | 24 +++++++++-------------
 criu/shmem.c             |  4 ++--
 criu/stats.c             |  3 ---
 criu/uffd.c              |  7 ++-----
 images/stats.proto       |  3 +--
 lib/py/images/pb2dict.py |  5 ++---
 12 files changed, 54 insertions(+), 80 deletions(-)

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1.9.1