nfsd: turn on reply cache for NFSv4

It's sort of ridiculous that we've never had a working reply cache for
NFSv4.

On the other hand, we may still not: our current reply cache is likely
not very good, especially in the TCP case (which is the only case that
matters for v4).  What we really need here is some serious testing.

Anyway, here's a start.

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

1 files changed, 3 insertions, 0 deletions

diff --git a/fs/nfsd/xdr4.h b/fs/nfsd/xdr4.h
index 351348c79631..d2a8d04428c7 100644
--- a/fs/nfsd/xdr4.h
+++ b/fs/nfsd/xdr4.h
@@ -457,6 +457,8 @@ struct nfsd4_op {
         struct nfs4_replay *                    replay;
 };
 
+bool nfsd4_cache_this_op(struct nfsd4_op *);
+
 struct nfsd4_compoundargs {
         /* scratch variables for XDR decode */
         __be32 *                        p;
@@ -479,6 +481,7 @@ struct nfsd4_compoundargs {
         u32                             opcnt;
         struct nfsd4_op                 *ops;
         struct nfsd4_op                 iops[8];
+        int                             cachetype;
 };
 
 struct nfsd4_compoundres {