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NFSv4: Handle NFS4ERR_DELAY and NFS4ERR_GRACE in nfs4_open_delegation_recall 

A server shouldn't normally return NFS4ERR_GRACE if the client holds a
delegation, since no conflicting lock reclaims can be granted, however
the spec does not require the server to grant the open in this
instance

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: stable@vger.kernel.org
hifive-unleashed-5.1
Trond Myklebust 2013-04-01 15:34:05 -04:00
parent dbb21c25a3
commit 8b6cc4d6f8
1 changed files with 6 additions and 0 deletions
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6
fs/nfs/nfs4proc.c
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@ -1432,6 +1432,12 @@ int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state
case -ENOMEM:
err = 0;
goto out;
case -NFS4ERR_DELAY:
case -NFS4ERR_GRACE:
set_bit(NFS_DELEGATED_STATE, &state->flags);
ssleep(1);
err = -EAGAIN;
goto out;
}
set_bit(NFS_DELEGATED_STATE, &state->flags);
err = nfs4_handle_exception(server, err, &exception);