[PATCH v2 0/3] recoalesce when ld read/write fails

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Hi,

I have moved the error handling inside mds_ops->rpc_release to reuse code
as suggested by Boaz.

I think we still need to issue the IO even for write because
we don't know if current writeback is the last one. So if we re-dirty the
pages and this is the last flush (flush at file close), then we don't have
a later flusher to writeback the re-dirtied pages. Boaz, please help see if
current approach is OK. Thanks.

The two cleanup patches (pipe upcall and set_lo_fail) are seperated out of
this patchset so they can be merged more easily.

Thanks,
Tao

Peng Tao (3):
  pNFS: recoalesce when ld write pagelist fails
  pNFS: recoalesce when ld read pagelist fails
  pNFS: introduce pnfs private workqueue

 fs/nfs/blocklayout/blocklayout.c |   17 +++++--
 fs/nfs/objlayout/objio_osd.c     |    8 +++
 fs/nfs/objlayout/objlayout.c     |    4 +-
 fs/nfs/pnfs.c                    |   92 +++++++++++++++++++++++++++-----------
 fs/nfs/pnfs.h                    |    8 +++-
 fs/nfs/read.c                    |   13 +++++-
 fs/nfs/write.c                   |   25 ++++++++++-
 7 files changed, 129 insertions(+), 38 deletions(-)

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