From: Keith Busch <keith.busch@intel.com>
Date: Thu, 26 Apr 2018 20:24:29 +0000 (-0600)
Subject: nvme/multipath: Disable runtime writable enabling parameter
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=5cadde8019a6a80550fdde92d5a3327565974eab;p=linux.git

nvme/multipath: Disable runtime writable enabling parameter

We can't allow the user to change multipath settings at runtime, as this
will create naming conflicts due to the different naming schemes used
for each mode.

Signed-off-by: Keith Busch <keith.busch@intel.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---

diff --git a/drivers/nvme/host/multipath.c b/drivers/nvme/host/multipath.c
index 956e0b8e9c4d7..3ded009e76313 100644
--- a/drivers/nvme/host/multipath.c
+++ b/drivers/nvme/host/multipath.c
@@ -15,7 +15,7 @@
 #include "nvme.h"
 
 static bool multipath = true;
-module_param(multipath, bool, 0644);
+module_param(multipath, bool, 0444);
 MODULE_PARM_DESC(multipath,
 	"turn on native support for multiple controllers per subsystem");