[PATCH v3 0/3] tmpfs: zero post-eof ranges on file extension

[Brian Foster <bfoster@redhat.com>]

Hi all,

Apologies for the quicker than expected respin here, but during
discussion with Baolin on v2 it became apparent that I factored the
first two patches in an unnecessarily confusing way, and I wanted to get
that resolved more quickly. Otherwise there are a few smaller changes
here that I think are incremental improvements.

Baolin, I left off the R-b tag from v2 just out of caution and how I
reworked the first two patches. The end result is mostly similar, but
I'd appreciate a quick look before adding that back. Otherwise most of
the functionality here should be the same as v2.

Thoughts, reviews, flames appreciated.

Brian

v3:
- Reorder changes in patches 1-2 to factor out existing logic first.
- Use local scope variable in shmem_writeout() fallocend block.
- Tweak combined zeroing logic in shmem_writeout().
- Clean up commit logs.
v2: https://lore.kernel.org/linux-mm/20251112162522.412295-1-bfoster@redhat.com/
- Rework to zero uptodate post-eof folios on writeout and full range
  from EOF on size extension.
- Misc. cleanups: variable renames (pos -> end), code relocation,
  comment cleanups/removal.
- Update commit log to call out POSIX requirement.
v1: https://lore.kernel.org/linux-mm/20250625184930.269727-1-bfoster@redhat.com/

Brian Foster (3):
  tmpfs: factor out folio zeroing logic at writeout time
  tmpfs: zero post-eof folio ranges on swapout
  tmpfs: zero post-eof ranges on file extension

 mm/shmem.c | 135 ++++++++++++++++++++++++++++++++++++++++++++---------
 1 file changed, 114 insertions(+), 21 deletions(-)

-- 
2.51.1