SUNRPC: Add an rpc_pipefs front end for the sunrpc cache code
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/net/sunrpc/rpc_pipe.c b/net/sunrpc/rpc_pipe.c
index 57e9cd3..8dd8153 100644
--- a/net/sunrpc/rpc_pipe.c
+++ b/net/sunrpc/rpc_pipe.c
@@ -26,6 +26,7 @@
#include <linux/sunrpc/clnt.h>
#include <linux/workqueue.h>
#include <linux/sunrpc/rpc_pipe_fs.h>
+#include <linux/sunrpc/cache.h>
static struct vfsmount *rpc_mount __read_mostly;
static int rpc_mount_count;
@@ -882,6 +883,48 @@
return rpc_rmdir_depopulate(dentry, rpc_clntdir_depopulate);
}
+static const struct rpc_filelist cache_pipefs_files[3] = {
+ [0] = {
+ .name = "channel",
+ .i_fop = &cache_file_operations_pipefs,
+ .mode = S_IFIFO|S_IRUSR|S_IWUSR,
+ },
+ [1] = {
+ .name = "content",
+ .i_fop = &content_file_operations_pipefs,
+ .mode = S_IFREG|S_IRUSR,
+ },
+ [2] = {
+ .name = "flush",
+ .i_fop = &cache_flush_operations_pipefs,
+ .mode = S_IFREG|S_IRUSR|S_IWUSR,
+ },
+};
+
+static int rpc_cachedir_populate(struct dentry *dentry, void *private)
+{
+ return rpc_populate(dentry,
+ cache_pipefs_files, 0, 3,
+ private);
+}
+
+static void rpc_cachedir_depopulate(struct dentry *dentry)
+{
+ rpc_depopulate(dentry, cache_pipefs_files, 0, 3);
+}
+
+struct dentry *rpc_create_cache_dir(struct dentry *parent, struct qstr *name,
+ mode_t umode, struct cache_detail *cd)
+{
+ return rpc_mkdir_populate(parent, name, umode, NULL,
+ rpc_cachedir_populate, cd);
+}
+
+void rpc_remove_cache_dir(struct dentry *dentry)
+{
+ rpc_rmdir_depopulate(dentry, rpc_cachedir_depopulate);
+}
+
/*
* populate the filesystem
*/