diff options
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/nfsd/nfs4callback.c | 14 | ||||
| -rw-r--r-- | fs/nfsd/state.h | 1 |
2 files changed, 13 insertions, 2 deletions
diff --git a/fs/nfsd/nfs4callback.c b/fs/nfsd/nfs4callback.c index 8b1ac8d4f011..a49201835a97 100644 --- a/fs/nfsd/nfs4callback.c +++ b/fs/nfsd/nfs4callback.c @@ -455,6 +455,7 @@ static int decode_cb_sequence4res(struct xdr_stream *xdr, if (unlikely(status || cb->cb_status)) return status; + cb->cb_update_seq_nr = true; return decode_cb_sequence4resok(xdr, cb); } @@ -875,6 +876,7 @@ static void nfsd4_cb_prepare(struct rpc_task *task, void *calldata) u32 minorversion = clp->cl_minorversion; cb->cb_minorversion = minorversion; + cb->cb_update_seq_nr = false; cb->cb_status = 0; if (minorversion) { if (!nfsd41_cb_get_slot(clp, task)) @@ -892,9 +894,16 @@ static void nfsd4_cb_done(struct rpc_task *task, void *calldata) clp->cl_minorversion); if (clp->cl_minorversion) { - /* No need for lock, access serialized in nfsd4_cb_prepare */ - if (!task->tk_status) + /* + * No need for lock, access serialized in nfsd4_cb_prepare + * + * RFC5661 20.9.3 + * If CB_SEQUENCE returns an error, then the state of the slot + * (sequence ID, cached reply) MUST NOT change. + */ + if (cb->cb_update_seq_nr) ++clp->cl_cb_session->se_cb_seq_nr; + clear_bit(0, &clp->cl_cb_slot_busy); rpc_wake_up_next(&clp->cl_cb_waitq); dprintk("%s: freed slot, new seqid=%d\n", __func__, @@ -1091,6 +1100,7 @@ void nfsd4_init_cb(struct nfsd4_callback *cb, struct nfs4_client *clp, cb->cb_ops = ops; INIT_WORK(&cb->cb_work, nfsd4_run_cb_work); cb->cb_status = 0; + cb->cb_update_seq_nr = false; cb->cb_need_restart = false; } diff --git a/fs/nfsd/state.h b/fs/nfsd/state.h index dbc4f85a5008..4ed7c2ae95eb 100644 --- a/fs/nfsd/state.h +++ b/fs/nfsd/state.h @@ -68,6 +68,7 @@ struct nfsd4_callback { struct nfsd4_callback_ops *cb_ops; struct work_struct cb_work; int cb_status; + bool cb_update_seq_nr; bool cb_need_restart; }; |