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authorJ. Bruce Fields <bfields@redhat.com>2011-01-24 12:11:02 -0500
committerJ. Bruce Fields <bfields@redhat.com>2011-07-18 09:39:01 -0400
commit1091006c5eb15cba56785bd5b498a8d0b9546903 (patch)
treeb51fad1bb57284b3eea4308c02652c4888b85860 /fs/nfsd/nfs4xdr.c
parent3e98abffd1665b884a322aedcd528577842f762f (diff)
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>
Diffstat (limited to 'fs/nfsd/nfs4xdr.c')
-rw-r--r--fs/nfsd/nfs4xdr.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
index c43f5602150..c8bf405d19d 100644
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -52,6 +52,7 @@
#include "xdr4.h"
#include "vfs.h"
#include "state.h"
+#include "cache.h"
#define NFSDDBG_FACILITY NFSDDBG_XDR
@@ -1466,6 +1467,7 @@ nfsd4_decode_compound(struct nfsd4_compoundargs *argp)
DECODE_HEAD;
struct nfsd4_op *op;
struct nfsd4_minorversion_ops *ops;
+ bool cachethis = false;
int i;
/*
@@ -1547,7 +1549,16 @@ nfsd4_decode_compound(struct nfsd4_compoundargs *argp)
argp->opcnt = i+1;
break;
}
+ /*
+ * We'll try to cache the result in the DRC if any one
+ * op in the compound wants to be cached:
+ */
+ cachethis |= nfsd4_cache_this_op(op);
}
+ /* Sessions make the DRC unnecessary: */
+ if (argp->minorversion)
+ cachethis = false;
+ argp->rqstp->rq_cachetype = cachethis ? RC_REPLBUFF : RC_NOCACHE;
DECODE_TAIL;
}