nfsd41: consume current stateid on read and write

Signed-off-by: NTigran Mkrtchyan <kofemann@gmail.com>
Signed-off-by: NJ. Bruce Fields <bfields@redhat.com>

fs/nfsd/current_stateid.h

@@ -16,5 +16,7 @@ extern void nfsd4_set_closestateid(struct nfsd4_compound_state *, struct nfsd4_c
  */
 extern void nfsd4_get_closestateid(struct nfsd4_compound_state *, struct nfsd4_close *);
 extern void nfsd4_get_lockustateid(struct nfsd4_compound_state *, struct nfsd4_locku *);
+extern void nfsd4_get_readstateid(struct nfsd4_compound_state *, struct nfsd4_read *);
+extern void nfsd4_get_writestateid(struct nfsd4_compound_state *, struct nfsd4_write *);
 
 #endif   /* _NFSD4_CURRENT_STATE_H */

fs/nfsd/nfs4proc.c

@@ -1546,6 +1546,7 @@ static struct nfsd4_operation nfsd4_ops[] = {
 		.op_flags = OP_MODIFIES_SOMETHING,
 		.op_name = "OP_READ",
 		.op_rsize_bop = (nfsd4op_rsize)nfsd4_read_rsize,
+		.op_get_currentstateid = (stateid_getter)nfsd4_get_readstateid,
 	},
 	[OP_READDIR] = {
 		.op_func = (nfsd4op_func)nfsd4_readdir,
@@ -1624,6 +1625,7 @@ static struct nfsd4_operation nfsd4_ops[] = {
 		.op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
 		.op_name = "OP_WRITE",
 		.op_rsize_bop = (nfsd4op_rsize)nfsd4_write_rsize,
+		.op_get_currentstateid = (stateid_getter)nfsd4_get_writestateid,
 	},
 	[OP_RELEASE_LOCKOWNER] = {
 		.op_func = (nfsd4op_func)nfsd4_release_lockowner,

fs/nfsd/nfs4state.c

@@ -4745,3 +4745,15 @@ nfsd4_get_lockustateid(struct nfsd4_compound_state *cstate, struct nfsd4_locku *
 {
 	get_stateid(cstate, &locku->lu_stateid);
 }
+
+void
+nfsd4_get_readstateid(struct nfsd4_compound_state *cstate, struct nfsd4_read *read)
+{
+	get_stateid(cstate, &read->rd_stateid);
+}
+
+void
+nfsd4_get_writestateid(struct nfsd4_compound_state *cstate, struct nfsd4_write *write)
+{
+	get_stateid(cstate, &write->wr_stateid);
+}