[PATCH 0/5] mm: A few cleanup patches around zap, shmem and uffd

[Peter Xu <peterx@redhat.com>]

[Based on tag v5.14, but it should still apply to -mm too.  If not, I can
 repost anytime]

I picked up these patches from uffd-wp v5 series here:

https://lore.kernel.org/lkml/20210715201422.211004-1-peterx@redhat.com/

IMHO all of them are very nice cleanups to existing code already, they're all
small and self-contained.  They'll be needed by uffd-wp coming series.  I would
appreciate if they can be accepted earlier, so as to not carry them over always
with the uffd-wp series.

I removed some CC from the uffd-wp v5 series to reduce the noise, and added a
few more into it.

Reviews are greatly welcomed, thanks.

Peter Xu (5):
  mm/shmem: Unconditionally set pte dirty in mfill_atomic_install_pte
  mm: Clear vmf->pte after pte_unmap_same() returns
  mm: Drop first_index/last_index in zap_details
  mm: Introduce zap_details.zap_flags
  mm: Introduce ZAP_FLAG_SKIP_SWAP

 include/linux/mm.h | 33 +++++++++++++++++--
 mm/memory.c        | 82 +++++++++++++++++++++-------------------------
 mm/shmem.c         |  1 -
 mm/userfaultfd.c   |  3 +-
 4 files changed, 68 insertions(+), 51 deletions(-)

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2.31.1