[PATCH 2/3] SUNRPC: add ability to remove specific server transport

[Olga Kornievskaia <okorniev@redhat.com>]

nfsd needs to be able to remove a particular entry from its
list of transports.

Suggested-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Olga Kornievskaia <okorniev@redhat.com>
---
 include/linux/sunrpc/svc.h |  1 +
 net/sunrpc/svc_xprt.c      | 11 +++++++++++
 2 files changed, 12 insertions(+)

diff --git a/include/linux/sunrpc/svc.h b/include/linux/sunrpc/svc.h
index 74658cca0f38..0bc0b9ead01e 100644
--- a/include/linux/sunrpc/svc.h
+++ b/include/linux/sunrpc/svc.h
@@ -444,6 +444,7 @@ int		   svc_register(const struct svc_serv *, struct net *, const int,
 				const unsigned short, const unsigned short);
 
 void		   svc_wake_up(struct svc_serv *);
+void		   svc_xprt_dequeue_entry(struct svc_xprt *xprt);
 void		   svc_reserve(struct svc_rqst *rqstp, int space);
 void		   svc_pool_wake_idle_thread(struct svc_pool *pool);
 struct svc_pool   *svc_pool_for_cpu(struct svc_serv *serv);
diff --git a/net/sunrpc/svc_xprt.c b/net/sunrpc/svc_xprt.c
index 06779b4cdd0a..7b86e69df08b 100644
--- a/net/sunrpc/svc_xprt.c
+++ b/net/sunrpc/svc_xprt.c
@@ -507,6 +507,17 @@ static struct svc_xprt *svc_xprt_dequeue(struct svc_pool *pool)
 	return xprt;
 }
 
+void svc_xprt_dequeue_entry(struct svc_xprt *xprt)
+{
+	struct svc_pool *pool;
+
+	pool = svc_pool_for_cpu(xprt->xpt_server);
+
+	WARN_ON_ONCE(pool->sp_xprts.ready);
+	llist_del_entry(&pool->sp_xprts.new, &xprt->xpt_ready.node);
+}
+EXPORT_SYMBOL_GPL(svc_xprt_dequeue_entry);
+
 /**
  * svc_reserve - change the space reserved for the reply to a request.
  * @rqstp:  The request in question
-- 
2.47.1