[PATCH 0/6] NFS: LOCALIO fixes and FF_FLAGS_NO_IO_THRU_MDS fixes

[Mike Snitzer <snitzer@kernel.org>]

Hi,

The first LOCALIO tracing fix is pretty old, just reposting it.  The
other 2 LOCALIO fixes fell out as a side-effect of other NFSD/LOCALIO
work I was doing.

The FF_FLAGS_NO_IO_THRU_MDS fixes focus on the cases where a previous
layout set FF_FLAGS_NO_IO_THRU_MDS but that layout was returned and
there was no recourse unless that context to prefer not issuing IO
back to the MDS is saved in-core and consulted if/when no layout
available.

All review appreciated, thanks.
Mike

Mike Snitzer (6):
  NFS/localio: fix nfs_local_dio_misaligned tracepoint
  NFS/localio: detect a short read or write before the iterator has moved
  NFS/localio: report the stability a DIO WRITE actually has
  pNFS/flexfiles: honor FF_FLAGS_NO_IO_THRU_MDS over the mdsthreshold hint
  pNFS/flexfiles: don't read through MDS when previous layout forbid it
  pNFS/flexfiles: don't reset to MDS for v4 error when previous layout forbid it

 fs/nfs/flexfilelayout/flexfilelayout.c | 60 ++++++++++++++++++++------
 fs/nfs/internal.h                      | 29 +++++++++++++
 fs/nfs/localio.c                       | 31 ++++++++++---
 fs/nfs/nfstrace.h                      |  5 ++-
 fs/nfs/pnfs.c                          | 12 +++++-
 5 files changed, 115 insertions(+), 22 deletions(-)

-- 
2.44.0