diff options
| author | Benny Halevy <benny@tonian.com> | 2012-02-21 14:16:44 -0800 |
|---|---|---|
| committer | J. Bruce Fields <bfields@redhat.com> | 2012-03-06 18:13:34 -0500 |
| commit | 4aa8913cb0cd257543f257ddb4baf0b37eb30b9d (patch) | |
| tree | 5a277572634a66f6298f2d3c1a2f0be71aa7f64d /fs/nfsd | |
| parent | 1fa9c4440c151c61eb3309579a85aae22c9adb6d (diff) | |
| download | linux-4aa8913cb0cd257543f257ddb4baf0b37eb30b9d.tar.bz2 | |
nfsd41: refactor nfs4_open_deleg_none_ext logic out of nfs4_open_delegation
When a 4.1 client asks for a delegation and the server returns none
op_delegate_type is set to NFS4_OPEN_DELEGATE_NONE_EXT
and op_why_no_deleg is set to either WND4_CONTENTION or WND4_RESOURCE.
Or, if the client sent a NFS4_SHARE_WANT_CANCEL (which it is not supposed
to ever do until our server supports delegations signaling),
op_why_no_deleg is set to WND4_CANCELLED.
Note that for WND4_CONTENTION and WND4_RESOURCE, the xdr layer is hard coded
at this time to encode boolean FALSE for ond_server_will_push_deleg /
ond_server_will_signal_avail.
Signed-off-by: Benny Halevy <bhalevy@tonian.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'fs/nfsd')
| -rw-r--r-- | fs/nfsd/nfs4state.c | 43 |
1 files changed, 24 insertions, 19 deletions
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c index 90c7e06ea2e8..1b3e2bd82568 100644 --- a/fs/nfsd/nfs4state.c +++ b/fs/nfsd/nfs4state.c @@ -2862,6 +2862,27 @@ static int nfs4_set_delegation(struct nfs4_delegation *dp, int flag) return 0; } +static void nfsd4_open_deleg_none_ext(struct nfsd4_open *open, int status) +{ + open->op_delegate_type = NFS4_OPEN_DELEGATE_NONE_EXT; + if (status == -EAGAIN) + open->op_why_no_deleg = WND4_CONTENTION; + else { + open->op_why_no_deleg = WND4_RESOURCE; + switch (open->op_deleg_want) { + case NFS4_SHARE_WANT_READ_DELEG: + case NFS4_SHARE_WANT_WRITE_DELEG: + case NFS4_SHARE_WANT_ANY_DELEG: + break; + case NFS4_SHARE_WANT_CANCEL: + open->op_why_no_deleg = WND4_CANCELLED; + break; + case NFS4_SHARE_WANT_NO_DELEG: + BUG(); /* not supposed to get here */ + } + } +} + /* * Attempt to hand out a delegation. */ @@ -2918,25 +2939,9 @@ out: open->op_delegate_type != NFS4_OPEN_DELEGATE_NONE) dprintk("NFSD: WARNING: refusing delegation reclaim\n"); - if (open->op_deleg_want) { - open->op_delegate_type = NFS4_OPEN_DELEGATE_NONE_EXT; - if (status == -EAGAIN) - open->op_why_no_deleg = WND4_CONTENTION; - else { - open->op_why_no_deleg = WND4_RESOURCE; - switch (open->op_deleg_want) { - case NFS4_SHARE_WANT_READ_DELEG: - case NFS4_SHARE_WANT_WRITE_DELEG: - case NFS4_SHARE_WANT_ANY_DELEG: - break; - case NFS4_SHARE_WANT_CANCEL: - open->op_why_no_deleg = WND4_CANCELLED; - break; - case NFS4_SHARE_WANT_NO_DELEG: - BUG(); /* not supposed to get here */ - } - } - } + /* 4.1 client asking for a delegation? */ + if (open->op_deleg_want) + nfsd4_open_deleg_none_ext(open, status); } return; out_free: |