Merge branch 'sunrpc_cache-for-2.6.32' into nfs-for-2.6.32

12 files changed, 939 insertions, 485 deletions

diff --git a/fs/nfs/idmap.c b/fs/nfs/idmap.c
index 86147b0ab2c..21a84d45916 100644
--- a/fs/nfs/idmap.c
+++ b/fs/nfs/idmap.c
@@ -101,7 +101,7 @@ static void idmap_pipe_destroy_msg(struct rpc_pipe_msg *);
 
 static unsigned int fnvhash32(const void *, size_t);
 
-static struct rpc_pipe_ops idmap_upcall_ops = {
+static const struct rpc_pipe_ops idmap_upcall_ops = {
         .upcall         = idmap_pipe_upcall,
         .downcall       = idmap_pipe_downcall,
         .destroy_msg    = idmap_pipe_destroy_msg,
@@ -119,8 +119,8 @@ nfs_idmap_new(struct nfs_client *clp)
         if (idmap == NULL)
                 return -ENOMEM;
 
-        idmap->idmap_dentry = rpc_mkpipe(clp->cl_rpcclient->cl_dentry, "idmap",
-                                         idmap, &idmap_upcall_ops, 0);
+        idmap->idmap_dentry = rpc_mkpipe(clp->cl_rpcclient->cl_path.dentry,
+                        "idmap", idmap, &idmap_upcall_ops, 0);
         if (IS_ERR(idmap->idmap_dentry)) {
                 error = PTR_ERR(idmap->idmap_dentry);
                 kfree(idmap);
diff --git a/fs/nfsd/export.c b/fs/nfsd/export.c
index b92a27629fb..d9462643155 100644
--- a/fs/nfsd/export.c
+++ b/fs/nfsd/export.c
@@ -85,6 +85,11 @@ static void expkey_request(struct cache_detail *cd,
         (*bpp)[-1] = '\n';
 }
 
+static int expkey_upcall(struct cache_detail *cd, struct cache_head *h)
+{
+        return sunrpc_cache_pipe_upcall(cd, h, expkey_request);
+}
+
 static struct svc_expkey *svc_expkey_update(struct svc_expkey *new, struct svc_expkey *old);
 static struct svc_expkey *svc_expkey_lookup(struct svc_expkey *);
 static struct cache_detail svc_expkey_cache;
@@ -259,7 +264,7 @@ static struct cache_detail svc_expkey_cache = {
         .hash_table     = expkey_table,
         .name           = "nfsd.fh",
         .cache_put      = expkey_put,
-        .cache_request  = expkey_request,
+        .cache_upcall   = expkey_upcall,
         .cache_parse    = expkey_parse,
         .cache_show     = expkey_show,
         .match          = expkey_match,
@@ -355,6 +360,11 @@ static void svc_export_request(struct cache_detail *cd,
         (*bpp)[-1] = '\n';
 }
 
+static int svc_export_upcall(struct cache_detail *cd, struct cache_head *h)
+{
+        return sunrpc_cache_pipe_upcall(cd, h, svc_export_request);
+}
+
 static struct svc_export *svc_export_update(struct svc_export *new,
                                             struct svc_export *old);
 static struct svc_export *svc_export_lookup(struct svc_export *);
@@ -724,7 +734,7 @@ struct cache_detail svc_export_cache = {
         .hash_table     = export_table,
         .name           = "nfsd.export",
         .cache_put      = svc_export_put,
-        .cache_request  = svc_export_request,
+        .cache_upcall   = svc_export_upcall,
         .cache_parse    = svc_export_parse,
         .cache_show     = svc_export_show,
         .match          = svc_export_match,
diff --git a/fs/nfsd/nfs4idmap.c b/fs/nfsd/nfs4idmap.c
index 5b398421b05..cdfa86fa147 100644
--- a/fs/nfsd/nfs4idmap.c
+++ b/fs/nfsd/nfs4idmap.c
@@ -146,6 +146,12 @@ idtoname_request(struct cache_detail *cd, struct cache_head *ch, char **bpp,
 }
 
 static int
+idtoname_upcall(struct cache_detail *cd, struct cache_head *ch)
+{
+        return sunrpc_cache_pipe_upcall(cd, ch, idtoname_request);
+}
+
+static int
 idtoname_match(struct cache_head *ca, struct cache_head *cb)
 {
         struct ent *a = container_of(ca, struct ent, h);
@@ -175,10 +181,10 @@ idtoname_show(struct seq_file *m, struct cache_detail *cd, struct cache_head *h)
 }
 
 static void
-warn_no_idmapd(struct cache_detail *detail)
+warn_no_idmapd(struct cache_detail *detail, int has_died)
 {
         printk("nfsd: nfsv4 idmapping failing: has idmapd %s?\n",
-                        detail->last_close? "died" : "not been started");
+                        has_died ? "died" : "not been started");
 }
 
 
@@ -192,7 +198,7 @@ static struct cache_detail idtoname_cache = {
         .hash_table     = idtoname_table,
         .name           = "nfs4.idtoname",
         .cache_put      = ent_put,
-        .cache_request  = idtoname_request,
+        .cache_upcall   = idtoname_upcall,
         .cache_parse    = idtoname_parse,
         .cache_show     = idtoname_show,
         .warn_no_listener = warn_no_idmapd,
@@ -325,6 +331,12 @@ nametoid_request(struct cache_detail *cd, struct cache_head *ch, char **bpp,
 }
 
 static int
+nametoid_upcall(struct cache_detail *cd, struct cache_head *ch)
+{
+        return sunrpc_cache_pipe_upcall(cd, ch, nametoid_request);
+}
+
+static int
 nametoid_match(struct cache_head *ca, struct cache_head *cb)
 {
         struct ent *a = container_of(ca, struct ent, h);
@@ -363,7 +375,7 @@ static struct cache_detail nametoid_cache = {
         .hash_table     = nametoid_table,
         .name           = "nfs4.nametoid",
         .cache_put      = ent_put,
-        .cache_request  = nametoid_request,
+        .cache_upcall   = nametoid_upcall,
         .cache_parse    = nametoid_parse,
         .cache_show     = nametoid_show,
         .warn_no_listener = warn_no_idmapd,
diff --git a/include/linux/sunrpc/cache.h b/include/linux/sunrpc/cache.h
index 2d8b211b932..6f52b4d7c44 100644
--- a/include/linux/sunrpc/cache.h
+++ b/include/linux/sunrpc/cache.h
@@ -59,6 +59,15 @@ struct cache_head {
 
 #define CACHE_NEW_EXPIRY 120    /* keep new things pending confirmation for 120 seconds */
 
+struct cache_detail_procfs {
+        struct proc_dir_entry   *proc_ent;
+        struct proc_dir_entry   *flush_ent, *channel_ent, *content_ent;
+};
+
+struct cache_detail_pipefs {
+        struct dentry *dir;
+};
+
 struct cache_detail {
         struct module *         owner;
         int                     hash_size;
@@ -70,15 +79,17 @@ struct cache_detail {
         char                    *name;
         void                    (*cache_put)(struct kref *);
 
-        void                    (*cache_request)(struct cache_detail *cd,
-                                                 struct cache_head *h,
-                                                 char **bpp, int *blen);
+        int                     (*cache_upcall)(struct cache_detail *,
+                                                struct cache_head *);
+
         int                     (*cache_parse)(struct cache_detail *,
                                                char *buf, int len);
 
         int                     (*cache_show)(struct seq_file *m,
                                               struct cache_detail *cd,
                                               struct cache_head *h);
+        void                    (*warn_no_listener)(struct cache_detail *cd,