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authorJ. Bruce Fields <bfields@redhat.com>2013-04-09 17:02:51 -0400
committerJ. Bruce Fields <bfields@redhat.com>2013-04-16 10:59:30 -0400
commit3bd64a5ba1719c2bb6cba4493dfd3e23a7653e54 (patch)
treec968f3f51d6082d3c7f0a03ec3d9fdaa031e6593 /fs/nfsd/state.h
parent23340032e64d70ce76817a88e8193c8040b095cf (diff)
downloadop-kernel-dev-3bd64a5ba1719c2bb6cba4493dfd3e23a7653e54.zip
op-kernel-dev-3bd64a5ba1719c2bb6cba4493dfd3e23a7653e54.tar.gz
nfsd4: implement SEQ4_STATUS_RECALLABLE_STATE_REVOKED
A 4.1 server must notify a client that has had any state revoked using the SEQ4_STATUS_RECALLABLE_STATE_REVOKED flag. The client can figure out exactly which state is the problem using CHECK_STATEID and then free it using FREE_STATEID. The status flag will be unset once all such revoked stateids are freed. Our server's only recallable state is delegations. So we keep with each 4.1 client a list of delegations that have timed out and been recalled, but haven't yet been freed by FREE_STATEID. Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'fs/nfsd/state.h')
-rw-r--r--fs/nfsd/state.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/nfsd/state.h b/fs/nfsd/state.h
index 13ec485..274e2a1 100644
--- a/fs/nfsd/state.h
+++ b/fs/nfsd/state.h
@@ -79,6 +79,8 @@ struct nfs4_stid {
#define NFS4_DELEG_STID 4
/* For an open stateid kept around *only* to process close replays: */
#define NFS4_CLOSED_STID 8
+/* For a deleg stateid kept around only to process free_stateid's: */
+#define NFS4_REVOKED_DELEG_STID 16
unsigned char sc_type;
stateid_t sc_stateid;
struct nfs4_client *sc_client;
@@ -238,6 +240,7 @@ struct nfs4_client {
struct list_head cl_openowners;
struct idr cl_stateids; /* stateid lookup */
struct list_head cl_delegations;
+ struct list_head cl_revoked; /* unacknowledged, revoked 4.1 state */
struct list_head cl_lru; /* tail queue */
struct xdr_netobj cl_name; /* id generated by client */
nfs4_verifier cl_verifier; /* generated by client */
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