[OS-BUILD PATCHv3 5/5] nvme: multipath: Change default of kernel NVMe multipath to be disabled

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From: Mike Snitzer <snitzer@xxxxxxxxxx>

nvme: multipath: Change default of kernel NVMe multipath to be disabled

BZ: 1948690
Upstream Status: RHEL-only

Signed-off-by: Mike Snitzer <snitzer@xxxxxxxxxx>

rhel-8.git commit 8be4b84f8e35dc6e5453b72fe5e60acef795a299
Author: Ewan Milne <emilne@xxxxxxxxxx>
Date:   Fri Mar 22 17:33:52 2019 -0400

    [nvme] nvme: multipath: Change default of kernel NVMe multipath to be disabled

    Message-id: <20190322173354.8197-20-emilne@xxxxxxxxxx>
    Patchwork-id: 247393
    O-Subject: [RHEL8.1 PATCH 19/21] nvme: multipath: Change default of kernel NVMe multipath to be disabled
    Bugzilla: 1690940
    RH-Acked-by: Tony Camuso <tcamuso@xxxxxxxxxx>
    RH-Acked-by: Mike Snitzer <snitzer@xxxxxxxxxx>

    Now that CONFIG_NVME_MULTIPATH is enabled, make the default behavior
    of the kernel to be "disabled" for compatibility with earlier RHEL8.

    RHEL-only

    Signed-off-by: Ewan D. Milne <emilne@xxxxxxxxxx>
    Signed-off-by: Herton R. Krzesinski <herton@xxxxxxxxxx>

diff a/drivers/nvme/host/multipath.c b/drivers/nvme/host/multipath.c
--- a/drivers/nvme/host/multipath.c
+++ b/drivers/nvme/host/multipath.c
@@ -8,7 +8,11 @@
 #include <trace/events/block.h>
 #include "nvme.h"
 
+#ifdef CONFIG_RHEL_DIFFERENCES
+static bool multipath = false;
+#else
 static bool multipath = true;
+#endif
 module_param(multipath, bool, 0444);
 MODULE_PARM_DESC(multipath,
 	"turn on native support for multiple controllers per subsystem");

--
https://gitlab.com/cki-project/kernel-ark/-/merge_requests/1024
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