linux-kernel - [PATCH] libnvdimm, pfn: fix ARCH=alpha allmodconfig build failure

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Date:	Fri, 06 May 2016 10:26:38 -0700
From:	Dan Williams <dan.j.williams@...el.com>
To:	linux-nvdimm@...ts.01.org
Cc:	Guenter Roeck <guenter@...ck-us.net>, linux-kernel@...r.kernel.org,
	stable@...r.kernel.org
Subject: [PATCH] libnvdimm, pfn: fix ARCH=alpha allmodconfig build failure

I had relied on the kbuild robot for cross build coverage, however it
only builds alpha_defconfig.  Switch from HPAGE_SIZE to PMD_SIZE, which
is more widely defined.

Fixes: 658922e57b84 ("libnvdimm, pfn: fix memmap reservation sizing")
Cc: <stable@...r.kernel.org>
Reported-by: Guenter Roeck <guenter@...ck-us.net>
Signed-off-by: Dan Williams <dan.j.williams@...el.com>
---
 drivers/nvdimm/pmem.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/nvdimm/pmem.c b/drivers/nvdimm/pmem.c
index 5101f3ab4f29..e5a8bf032ec9 100644
--- a/drivers/nvdimm/pmem.c
+++ b/drivers/nvdimm/pmem.c
@@ -404,7 +404,7 @@ static int nd_pfn_init(struct nd_pfn *nd_pfn)
 		 * vmemmap_populate_hugepages() allocates the memmap array in
 		 * HPAGE_SIZE chunks.
 		 */
-		memmap_size = ALIGN(64 * npfns, HPAGE_SIZE);
+		memmap_size = ALIGN(64 * npfns, PMD_SIZE);
 		offset = ALIGN(start + SZ_8K + memmap_size, nd_pfn->align)
 			- start;
 	} else if (nd_pfn->mode == PFN_MODE_RAM)