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| author | Andy Adamson <andros@netapp.com> | 2009-12-04 15:55:38 -0500 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2009-12-04 15:55:38 -0500 |
| commit | ea028ac92541ac30bf202ed94cb53eec2ea0c9d6 (patch) | |
| tree | f9b807cf0f870db922f96e72dab68ed37ba18cf0 /fs/nfs/nfs4_fs.h | |
| parent | 05f0d2364726c92f6b870db654967088349379fe (diff) | |
| download | op-kernel-dev-ea028ac92541ac30bf202ed94cb53eec2ea0c9d6.zip op-kernel-dev-ea028ac92541ac30bf202ed94cb53eec2ea0c9d6.tar.gz | |
nfs41: nfs41: fix state manager deadlock in session reset
If the session is reset during state recovery, the state manager thread can
sleep on the slot_tbl_waitq causing a deadlock.
Add a completion framework to the session. Have the state manager thread set
a new session state (NFS4CLNT_SESSION_DRAINING) and wait for the session slot
table to drain.
Signal the state manager thread in nfs41_sequence_free_slot when the
NFS4CLNT_SESSION_DRAINING bit is set and the session is drained.
Reported-by: Trond Myklebust <trond@netapp.com>
Signed-off-by: Andy Adamson <andros@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs/nfs4_fs.h')
| -rw-r--r-- | fs/nfs/nfs4_fs.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h index e9ecd6b..5c77401 100644 --- a/fs/nfs/nfs4_fs.h +++ b/fs/nfs/nfs4_fs.h @@ -45,6 +45,7 @@ enum nfs4_client_state { NFS4CLNT_RECLAIM_NOGRACE, NFS4CLNT_DELEGRETURN, NFS4CLNT_SESSION_RESET, + NFS4CLNT_SESSION_DRAINING, }; /* |
