[RFC PATCH 0/6] NFS: LOCALIO improvements and support for misaligned O_DIRECT READs

[Mike Snitzer <snitzer@kernel.org>]

Hi,

This patchset benefits from this NFSD patchset:
https://lore.kernel.org/linux-nfs/20250708160619.64800-1-snitzer@kernel.org/
(particularly due to patch 6 leaning heavily on NFSD's ability to
expand misaligned O_DIRECT READS to be DIO-aligned).

First 3 patches are general LOCALIO improvements.
Patches 4 - 6 added dio_alignment awareness to LOCALIO and make it
possible for LOCALIO to punt IO over to NFSD (via loopback network) so
that it can take advantage of NFSD's io_cache_read=2 to handle
misaligned O_DIRECT READs so that they are issued as DIO-aligned.

Thanks,
Mike

Mike Snitzer (6):
  nfs/localio: avoid bouncing LOCALIO if nfs_client_is_local()
  nfs/localio: add localio_async_probe modparm
  nfs/localio: make trace_nfs_local_open_fh more useful
  nfs/localio: add nfsd_file_dio_alignment
  nfs/localio: refactor iocb initialization
  nfs/localio: fallback to NFSD for misaligned O_DIRECT READs

 fs/nfs/flexfilelayout/flexfilelayout.c |   1 +
 fs/nfs/internal.h                      |   4 +-
 fs/nfs/localio.c                       | 232 ++++++++++++++++---------
 fs/nfs/nfstrace.h                      |   6 +-
 fs/nfs/pagelist.c                      |  15 +-
 fs/nfsd/localio.c                      |  11 ++
 include/linux/nfslocalio.h             |   2 +
 7 files changed, 178 insertions(+), 93 deletions(-)

-- 
2.44.0