diff options
| author | Jeff Layton <jlayton@primarydata.com> | 2014-07-29 21:34:27 -0400 |
|---|---|---|
| committer | J. Bruce Fields <bfields@redhat.com> | 2014-07-31 14:20:19 -0400 |
| commit | 58fb12e6a42f30adf209f8f41385a3bbb2c82420 (patch) | |
| tree | 5ca75f92bd5aa9629f30c21d6e0e8df8f0984235 /fs/nfsd/nfs4proc.c | |
| parent | 6b180f0b57af0295e8dc2602a7a4781241766340 (diff) | |
| download | linux-58fb12e6a42f30adf209f8f41385a3bbb2c82420.tar.bz2 | |
nfsd: Add a mutex to protect the NFSv4.0 open owner replay cache
We don't want to rely on the client_mutex for protection in the case of
NFSv4 open owners. Instead, we add a mutex that will only be taken for
NFSv4.0 state mutating operations, and that will be released once the
entire compound is done.
Also, ensure that nfsd4_cstate_assign_replay/nfsd4_cstate_clear_replay
take a reference to the stateowner when they are using it for NFSv4.0
open and lock replay caching.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Signed-off-by: Jeff Layton <jlayton@primarydata.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'fs/nfsd/nfs4proc.c')
| -rw-r--r-- | fs/nfsd/nfs4proc.c | 12 |
1 files changed, 3 insertions, 9 deletions
diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c index 8611585f739d..29cf395b694e 100644 --- a/fs/nfsd/nfs4proc.c +++ b/fs/nfsd/nfs4proc.c @@ -469,12 +469,9 @@ out: fh_put(resfh); kfree(resfh); } - nfsd4_cleanup_open_state(open, status); - if (open->op_openowner && !nfsd4_has_session(cstate)) - cstate->replay_owner = &open->op_openowner->oo_owner; + nfsd4_cleanup_open_state(cstate, open, status); nfsd4_bump_seqid(cstate, status); - if (!cstate->replay_owner) - nfs4_unlock_state(); + nfs4_unlock_state(); return status; } @@ -1395,10 +1392,7 @@ encode_op: args->ops, args->opcnt, resp->opcnt, op->opnum, be32_to_cpu(status)); - if (cstate->replay_owner) { - nfs4_unlock_state(); - cstate->replay_owner = NULL; - } + nfsd4_cstate_clear_replay(cstate); /* XXX Ugh, we need to get rid of this kind of special case: */ if (op->opnum == OP_READ && op->u.read.rd_filp) fput(op->u.read.rd_filp); |