From: Md Haris Iqbal <haris.iqbal@ionos.com>
Date: Fri, 6 Aug 2021 13:21:07 +0200
Subject: RDMA/rtrs-clt: During add_path change for_new_clt according to
 path_num
Patch-mainline: v5.15-rc1
Git-commit: ac5e8814698c7ceb7188855117b589bc8dd1875e
References: jsc#SLE-19249

When all the paths are removed for a session, the addition of the first
path is like a new session for the storage server.

Hence, for_new_clt has to be set to 1.

Link: https://lore.kernel.org/r/20210806112112.124313-2-haris.iqbal@ionos.com
Signed-off-by: Md Haris Iqbal <haris.iqbal@ionos.com>
Signed-off-by: Jack Wang <jinpu.wang@ionos.com>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/infiniband/ulp/rtrs/rtrs-clt.c |   12 ++++++++++++
 1 file changed, 12 insertions(+)

--- a/drivers/infiniband/ulp/rtrs/rtrs-clt.c
+++ b/drivers/infiniband/ulp/rtrs/rtrs-clt.c
@@ -3082,6 +3082,18 @@ int rtrs_clt_create_path_from_sysfs(stru
 	if (IS_ERR(sess))
 		return PTR_ERR(sess);
 
+	mutex_lock(&clt->paths_mutex);
+	if (clt->paths_num == 0) {
+		/*
+		 * When all the paths are removed for a session,
+		 * the addition of the first path is like a new session for
+		 * the storage server
+		 */
+		sess->for_new_clt = 1;
+	}
+
+	mutex_unlock(&clt->paths_mutex);
+
 	/*
 	 * It is totally safe to add path in CONNECTING state: coming
 	 * IO will never grab it.  Also it is very important to add