diff options
Diffstat (limited to 'fs/nfs/callback_xdr.c')
| -rw-r--r-- | fs/nfs/callback_xdr.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/fs/nfs/callback_xdr.c b/fs/nfs/callback_xdr.c index dbd0d649805..7a2d6c5864c 100644 --- a/fs/nfs/callback_xdr.c +++ b/fs/nfs/callback_xdr.c @@ -596,6 +596,37 @@ preprocess_nfs41_op(int nop, unsigned int op_nr, struct callback_op **op) return htonl(NFS_OK); } +static void nfs4_callback_free_slot(struct nfs4_session *session) +{ + struct nfs4_slot_table *tbl = &session->bc_slot_table; + + spin_lock(&tbl->slot_tbl_lock); + /* + * Let the state manager know callback processing done. + * A single slot, so highest used slotid is either 0 or -1 + */ + tbl->highest_used_slotid--; + nfs4_check_drain_bc_complete(session); + spin_unlock(&tbl->slot_tbl_lock); +} + +static void nfs4_cb_free_slot(struct nfs_client *clp) +{ + if (clp && clp->cl_session) + nfs4_callback_free_slot(clp->cl_session); +} + +/* A single slot, so highest used slotid is either 0 or -1 */ +void nfs4_cb_take_slot(struct nfs_client *clp) +{ + struct nfs4_slot_table *tbl = &clp->cl_session->bc_slot_table; + + spin_lock(&tbl->slot_tbl_lock); + tbl->highest_used_slotid++; + BUG_ON(tbl->highest_used_slotid != 0); + spin_unlock(&tbl->slot_tbl_lock); +} + #else /* CONFIG_NFS_V4_1 */ static __be32 @@ -604,6 +635,9 @@ preprocess_nfs41_op(int nop, unsigned int op_nr, struct callback_op **op) return htonl(NFS4ERR_MINOR_VERS_MISMATCH); } +static void nfs4_cb_free_slot(struct nfs_client *clp) +{ +} #endif /* CONFIG_NFS_V4_1 */ static __be32 @@ -724,6 +758,7 @@ static __be32 nfs4_callback_compound(struct svc_rqst *rqstp, void *argp, void *r *hdr_res.status = status; *hdr_res.nops = htonl(nops); + nfs4_cb_free_slot(cps.clp); nfs_put_client(cps.clp); dprintk("%s: done, status = %u\n", __func__, ntohl(status)); return rpc_success; |