nfsd4: rearrange struct nfsd4_slot

Combine two booleans into a single flag field, move the smaller fields
to the end.

(In practice this doesn't make the struct any smaller.  But we'll be
adding another flag here soon.)

Remove some debugging code that doesn't look useful, while we're in the
neighborhood.

Signed-off-by: J. Bruce Fields <bfields@redhat.com>

4 files changed, 14 insertions, 14 deletions

diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 2095dbb2923e..e0e706f8918d 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -1374,15 +1374,12 @@ nfsd4_enc_sequence_replay(struct nfsd4_compoundargs *args,
         struct nfsd4_op *op;
         struct nfsd4_slot *slot = resp->cstate.slot;
 
-        dprintk("--> %s resp->opcnt %d cachethis %u \n", __func__,
-                resp->opcnt, resp->cstate.slot->sl_cachethis);
-
         /* Encode the replayed sequence operation */
         op = &args->ops[resp->opcnt - 1];
         nfsd4_encode_operation(resp, op);
 
         /* Return nfserr_retry_uncached_rep in next operation. */
-        if (args->opcnt > 1 && slot->sl_cachethis == 0) {
+        if (args->opcnt > 1 && !(slot->sl_flags & NFSD4_SLOT_CACHETHIS)) {
                 op = &args->ops[resp->opcnt++];
                 op->status = nfserr_retry_uncached_rep;
                 nfsd4_encode_operation(resp, op);
@@ -1916,7 +1913,8 @@ nfsd4_sequence(struct svc_rqst *rqstp,
          * sr_highest_slotid and the sr_target_slot id to maxslots */
         seq->maxslots = session->se_fchannel.maxreqs;
 
-        status = check_slot_seqid(seq->seqid, slot->sl_seqid, slot->sl_inuse);
+        status = check_slot_seqid(seq->seqid, slot->sl_seqid,
+                                        slot->sl_flags & NFSD4_SLOT_INUSE);
         if (status == nfserr_replay_cache) {
                 cstate->slot = slot;
                 cstate->session = session;
@@ -1933,9 +1931,10 @@ nfsd4_sequence(struct svc_rqst *rqstp,
         conn = NULL;
 
         /* Success! bump slot seqid */
-        slot->sl_inuse = true;
         slot->sl_seqid = seq->seqid;
-        slot->sl_cachethis = seq->cachethis;
+        slot->sl_flags = NFSD4_SLOT_INUSE;
+        if (seq->cachethis)
+                slot->sl_flags |= NFSD4_SLOT_CACHETHIS;
 
         cstate->slot = slot;
         cstate->session = session;
diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
index 0ec5a1b9700e..279a70548e47 100644
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -3532,7 +3532,7 @@ int nfsd4_check_resp_size(struct nfsd4_compoundres *resp, u32 pad)
         if (length > session->se_fchannel.maxresp_sz)
                 return nfserr_rep_too_big;
 
-        if (slot->sl_cachethis == 1 &&
+        if ((slot->sl_flags & NFSD4_SLOT_CACHETHIS) &&
             length > session->se_fchannel.maxresp_cached)
                 return nfserr_rep_too_big_to_cache;
 
@@ -3656,8 +3656,7 @@ nfs4svc_encode_compoundres(struct svc_rqst *rqstp, __be32 *p, struct nfsd4_compo
         if (nfsd4_has_session(cs)) {
                 if (cs->status != nfserr_replay_cache) {
                         nfsd4_store_cache_entry(resp);
-                        dprintk("%s: SET SLOT STATE TO AVAILABLE\n", __func__);
-                        cs->slot->sl_inuse = false;
+                        cs->slot->sl_flags &= ~NFSD4_SLOT_INUSE;
                 }
                 /* Renew the clientid on success and on replay */
                 release_session_client(cs->session);
diff --git a/fs/nfsd/state.h b/fs/nfsd/state.h
index ffb5df1db94f..122217fe9155 100644
--- a/fs/nfsd/state.h
+++ b/fs/nfsd/state.h
@@ -128,12 +128,13 @@ static inline struct nfs4_delegation *delegstateid(struct nfs4_stid *s)
                 (NFSD_CACHE_SIZE_SLOTS_PER_SESSION * NFSD_SLOT_CACHE_SIZE)
 
 struct nfsd4_slot {
-        bool    sl_inuse;
-        bool    sl_cachethis;
-        u16     sl_opcnt;
         u32     sl_seqid;
         __be32  sl_status;
         u32     sl_datalen;
+        u16     sl_opcnt;
+#define NFSD4_SLOT_INUSE        (1 << 0)
+#define NFSD4_SLOT_CACHETHIS    (1 << 1)
+        u8      sl_flags;
         char    sl_data[];
 };
 
diff --git a/fs/nfsd/xdr4.h b/fs/nfsd/xdr4.h
index 2364747ee97d..21dccdfcb7a6 100644
--- a/fs/nfsd/xdr4.h
+++ b/fs/nfsd/xdr4.h
@@ -503,7 +503,8 @@ static inline bool nfsd4_is_solo_sequence(struct nfsd4_compoundres *resp)
 
 static inline bool nfsd4_not_cached(struct nfsd4_compoundres *resp)
 {
-        return !resp->cstate.slot->sl_cachethis || nfsd4_is_solo_sequence(resp);
+        return !(resp->cstate.slot->sl_flags & NFSD4_SLOT_CACHETHIS)
+                || nfsd4_is_solo_sequence(resp);
 }
 
 #define NFS4_SVC_XDRSIZE                sizeof(struct nfsd4_compoundargs)