nfsd41: use current stateid by value

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

1 files changed, 11 insertions, 2 deletions

diff --git a/fs/nfsd/xdr4.h b/fs/nfsd/xdr4.h
index 3c1ddd7f13a4..12789eb3f911 100644
--- a/fs/nfsd/xdr4.h
+++ b/fs/nfsd/xdr4.h
@@ -43,6 +43,13 @@
 #define NFSD4_MAX_TAGLEN        128
 #define XDR_LEN(n)                     (((n) + 3) & ~3)
 
+#define CURRENT_STATE_ID_FLAG (1<<0)
+#define SAVED_STATE_ID_FLAG (1<<1)
+
+#define SET_STATE_ID(c, f) ((c)->sid_flags |= (f))
+#define HAS_STATE_ID(c, f) ((c)->sid_flags & (f))
+#define CLEAR_STATE_ID(c, f) ((c)->sid_flags &= ~(f))
+
 struct nfsd4_compound_state {
         struct svc_fh           current_fh;
         struct svc_fh           save_fh;
@@ -54,8 +61,10 @@ struct nfsd4_compound_state {
         size_t                  iovlen;
         u32                     minorversion;
         u32                     status;
-        const stateid_t *current_stateid;
-        const stateid_t *save_stateid;
+        stateid_t       current_stateid;
+        stateid_t       save_stateid;
+        /* to indicate current and saved state id presents */
+        u32             sid_flags;
 };
 
 static inline bool nfsd4_has_session(struct nfsd4_compound_state *cs)