nfsd41: replace page based DRC with buffer based DRC

[safe/jmp/linux-2.6] / include / linux / nfsd / state.h

diff --git a/include/linux/nfsd/state.h b/include/linux/nfsd/state.h
index ff0b771..70ef5f4 100644 (file)
--- a/include/linux/nfsd/state.h
+++ b/include/linux/nfsd/state.h
@@ -94,30 +94,23 @@ struct nfs4_cb_conn {
 
 /* Maximum number of slots per session. 160 is useful for long haul TCP */
 #define NFSD_MAX_SLOTS_PER_SESSION     160
-/* Maximum number of pages per slot cache entry */
-#define NFSD_PAGES_PER_SLOT    1
-#define NFSD_SLOT_CACHE_SIZE           PAGE_SIZE
 /* Maximum number of operations per session compound */
 #define NFSD_MAX_OPS_PER_COMPOUND      16
+/* Maximum  session per slot cache size */
+#define NFSD_SLOT_CACHE_SIZE           1024
 /* Maximum number of NFSD_SLOT_CACHE_SIZE slots per session */
 #define NFSD_CACHE_SIZE_SLOTS_PER_SESSION      32
 #define NFSD_MAX_MEM_PER_SESSION  \
                (NFSD_CACHE_SIZE_SLOTS_PER_SESSION * NFSD_SLOT_CACHE_SIZE)
 
-struct nfsd4_cache_entry {
-       __be32          ce_status;
-       struct kvec     ce_datav; /* encoded NFSv4.1 data in rq_res.head[0] */
-       struct page     *ce_respages[NFSD_PAGES_PER_SLOT + 1];
-       int             ce_cachethis;
-       short           ce_resused;
-       int             ce_opcnt;
-       int             ce_rpchdrlen;
-};
-
 struct nfsd4_slot {
-       bool                            sl_inuse;
-       u32                             sl_seqid;
-       struct nfsd4_cache_entry        sl_cache_entry;
+       bool    sl_inuse;
+       bool    sl_cachethis;
+       u16     sl_opcnt;
+       u32     sl_seqid;
+       __be32  sl_status;
+       u32     sl_datalen;
+       char    sl_data[];
 };
 
 struct nfsd4_channel_attrs {
@@ -159,7 +152,7 @@ struct nfsd4_session {
        struct nfs4_sessionid   se_sessionid;
        struct nfsd4_channel_attrs se_fchannel;
        struct nfsd4_channel_attrs se_bchannel;
-       struct nfsd4_slot       se_slots[];     /* forward channel slots */
+       struct nfsd4_slot       *se_slots[];    /* forward channel slots */
 };
 
 static inline void