[RFC PATCH 0/2] nfsd sync export_op (was 'wsync export option')

[Ben Myers <bpm@sgi.com>]

This is another try based upon Christoph and Trond's suggestions in the 'wsync
export option' thread.  I've added the export operation and combined
nfsd_sync_dir and write_inode_now usage into nfsd_sync2 which passes the buck
onto XFS.  It's been very lightly tested.  It's just a little bit faster than
the previous try:

# time tar -xvf /mnt2/quilt-0.47.tar > /dev/null

plain jane:
0m13.177s       0m13.301s       0m13.528s

previous try:
0m8.361s        0m8.400s        0m8.301s

w/ xfs commit_metadata op:
0m7.426s        0m7.340s        0m7.198s

Thanks!
-Ben

---

Ben Myers (2):
      commit_metadata export operation and nfsd_sync2
      xfs_export_operations.commit_metadata


 fs/nfsd/nfs3proc.c            |    2 -
 fs/nfsd/nfs4proc.c            |    2 -
 fs/nfsd/nfs4recover.c         |    2 -
 fs/nfsd/nfs4state.c           |    2 -
 fs/nfsd/nfsproc.c             |    4 +
 fs/nfsd/vfs.c                 |  113 ++++++++++++++++++++++++++---------------
 fs/nfsd/vfs.h                 |    4 +
 fs/xfs/linux-2.6/xfs_export.c |   64 +++++++++++++++++++++++
 include/linux/exportfs.h      |    6 ++
 9 files changed, 151 insertions(+), 48 deletions(-)

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