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@xxxxxxxxxx>
---
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 ad21b06..94daab4 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -2853,6 +2853,27 @@ 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.
*/
@@ -2909,25 +2930,9 @@ static int nfs4_set_delegation(struct nfs4_delegation *dp, int flag)
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:
--
1.7.6.5
--
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