From cdd77d3e193031cc67426cd671d8aa370f7dfee4 Mon Sep 17 00:00:00 2001
From: Dan Williams <dan.j.williams@intel.com>
Date: Fri, 17 Nov 2017 16:23:08 -0800
Subject: nfit, libnvdimm: deprecate the generic SMART ioctl
The kernel's ND_IOCTL_SMART_THRESHOLD command is based on a payload
definition that has become broken / out-of-sync with recent versions of
the NVDIMM_FAMILY_INTEL definition. Deprecate the use of the
ND_IOCTL_SMART_THRESHOLD command in favor of the ND_CMD_CALL approach
taken by NVDIMM_FAMILY_{HPE,MSFT}, where we can manage the per-vendor
variance in userspace.
In a couple years, when the new scheme is widely deployed in userspace
packages, the ND_IOCTL_SMART_THRESHOLD support can be removed. For now
we prevent new binaries from compiling against the kernel header
definitions, but kernel still compatible with old binaries. The
libndctl.h [1] header is now the authoritative interface definition for
NVDIMM SMART.
[1]: https://github.com/pmem/ndctl
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
---
drivers/nvdimm/bus.c | 3 ---
1 file changed, 3 deletions(-)
(limited to 'drivers/nvdimm')
diff --git a/drivers/nvdimm/bus.c b/drivers/nvdimm/bus.c
index 0a5e6cd758fe..78eabc3a1ab1 100644
--- a/drivers/nvdimm/bus.c
+++ b/drivers/nvdimm/bus.c
@@ -1142,9 +1142,6 @@ int __init nvdimm_bus_init(void)
{
int rc;
- BUILD_BUG_ON(sizeof(struct nd_smart_payload) != 128);
- BUILD_BUG_ON(sizeof(struct nd_smart_threshold_payload) != 8);
-
rc = bus_register(&nvdimm_bus_type);
if (rc)
return rc;
--
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