linux.git/fs/nfs/callback_proc.c, branch v4.5

NFSv4.1/pNFS: Fix a race in initiate_file_draining()

2016-01-04T17:36:12+00:00

Peng Tao points out that the call to pnfs_mark_matching_lsegs_return()
could race with pnfs_put_lseg(), in which case the layout segment is
cleared, but no layoutreturn will be sent.
Fix is to replace the call to pnfs_mark_matching_lsegs_invalid().

Reported-by: Peng Tao 
Signed-off-by: Trond Myklebust

NFSv4.1/pNFS: Don't queue up a new commit if the layout segment is invalid

2015-12-31T20:55:35+00:00

If the layout segment is invalid, then we should not be adding more
write requests to the commit list. Instead, those writes should be
replayed after requesting a new layout.

Signed-off-by: Trond Myklebust

NFSv4: List stateid information in the callback tracepoints

2015-12-28T19:33:05+00:00

The stateid is extremely valuable when debugging.

Signed-off-by: Trond Myklebust

NFSv4.1/pNFS: Don't return NFS4ERR_DELAY unnecessarily in CB_LAYOUTRECALL

2015-12-28T19:33:05+00:00

If the client is promising to return the layout ASAP, then there is no
need to return DELAY and have the server retry. Instead default to the
normal procedure described in RFC5661.

Signed-off-by: Trond Myklebust

NFSv4.1/pNFS: Ensure we enforce RFC5661 Section 12.5.5.2.1

2015-12-28T19:33:04+00:00

The RFC requires us to check if the server is recalling a stateid that we
haven't yet received. If so, tell it to wait.

Signed-off-by: Trond Myklebust

pNFS: If we have to delay the layout callback, mark the layout for return

2015-12-28T19:33:04+00:00

If the client needs to delay the layout callback, then speed up the recall
process by marking the remaining layout segments to be actively returned
by the client.

Signed-off-by: Trond Myklebust

NFSv4.1/pNFS: Add a helper to mark the layout as returned

2015-12-28T19:33:04+00:00

This ensures that we don't reuse the stateid if a layout return or
implied layout return means that we've returned all layout segments

Signed-off-by: Trond Myklebust

NFS: Remove unneeded NFS_DEBUG checking before define NFSDBG_FACILITY

2015-10-21T20:49:23+00:00

It's not needed to checking NFS_DEBUG before define NFSDBG_FACILITY, remove it.

Signed-off-by: Kinglong Mee 
Signed-off-by: Trond Myklebust

NFSv4: Add a tracepoint for CB_LAYOUTRECALL

2015-08-25T18:40:06+00:00

Only support for single file layoutrecall for now.

Signed-off-by: Trond Myklebust

NFSv4: Add a tracepoint for CB_GETATTR

2015-08-25T18:40:05+00:00

Signed-off-by: Trond Myklebust