From 3f7b3960ac22c14c086e9f2ed4dfeeae7183d9bd Mon Sep 17 00:00:00 2001
From: Stanislav Kinsbursky <skinsbursky@parallels.com>
Date: Mon, 26 Dec 2011 15:39:22 +0300
Subject: [PATCH] --- yaml --- r: 294361 b: refs/heads/master c:
 432eb1a5fb380477ae759041bac2bb305977e436 h: refs/heads/master i:   294359:
 6bf579ad814ffe5ad57904cb12558ee084033ba9 v: v3

---
 [refs]                                   |  2 +-
 trunk/include/linux/sunrpc/rpc_pipe_fs.h |  3 +++
 trunk/net/sunrpc/rpc_pipe.c              | 16 ++++++++++++++++
 3 files changed, 20 insertions(+), 1 deletion(-)

diff --git a/[refs] b/[refs]
index e7d5bda8bba1..7b255b134ed5 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 2d00131acc641b2cb6f0bdefb8c7bdd8fdf7410b
+refs/heads/master: 432eb1a5fb380477ae759041bac2bb305977e436
diff --git a/trunk/include/linux/sunrpc/rpc_pipe_fs.h b/trunk/include/linux/sunrpc/rpc_pipe_fs.h
index d39782ce6c67..2f3382230141 100644
--- a/trunk/include/linux/sunrpc/rpc_pipe_fs.h
+++ b/trunk/include/linux/sunrpc/rpc_pipe_fs.h
@@ -51,6 +51,9 @@ enum {
 	RPC_PIPEFS_UMOUNT,
 };
 
+extern struct dentry *rpc_d_lookup_sb(const struct super_block *sb,
+				      const unsigned char *dir_name);
+
 extern ssize_t rpc_pipe_generic_upcall(struct file *, struct rpc_pipe_msg *,
 				       char __user *, size_t);
 extern int rpc_queue_upcall(struct inode *, struct rpc_pipe_msg *);
diff --git a/trunk/net/sunrpc/rpc_pipe.c b/trunk/net/sunrpc/rpc_pipe.c
index 58a5062df260..6f295e6c12a0 100644
--- a/trunk/net/sunrpc/rpc_pipe.c
+++ b/trunk/net/sunrpc/rpc_pipe.c
@@ -1007,6 +1007,22 @@ static const struct rpc_filelist files[] = {
 	},
 };
 
+/*
+ * This call can be used only in RPC pipefs mount notification hooks.
+ */
+struct dentry *rpc_d_lookup_sb(const struct super_block *sb,
+			       const unsigned char *dir_name)
+{
+	struct qstr dir = {
+		.name = dir_name,
+		.len = strlen(dir_name),
+		.hash = full_name_hash(dir_name, strlen(dir_name)),
+	};
+
+	return d_lookup(sb->s_root, &dir);
+}
+EXPORT_SYMBOL_GPL(rpc_d_lookup_sb);
+
 static int
 rpc_fill_super(struct super_block *sb, void *data, int silent)
 {