[PATCH v3 05/23] mm/memblock: drop WARN and use SMP_CACHE_BYTES as a default alignment

[Santosh Shilimkar]

From: Grygorii Strashko <grygorii.strashko at ti.com>

Don't produce warning and interpret 0 as "default align" equal to
SMP_CACHE_BYTES in case if caller of memblock_alloc_base_nid() doesn't
specify alignment for the block (align == 0).

This is done in preparation of introducing common memblock alloc
interface to make code behavior consistent. More details are
in below thread :
	https://lkml.org/lkml/2013/10/13/117.

Cc: Yinghai Lu <yinghai at kernel.org>
Cc: Tejun Heo <tj at kernel.org>
Cc: Andrew Morton <akpm at linux-foundation.org>
Signed-off-by: Grygorii Strashko <grygorii.strashko at ti.com>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar at ti.com>
---
 mm/memblock.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/mm/memblock.c b/mm/memblock.c
index 39855d4..784958d 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -883,8 +883,8 @@ static phys_addr_t __init memblock_alloc_base_nid(phys_addr_t size,
 {
 	phys_addr_t found;
 
-	if (WARN_ON(!align))
-		align = __alignof__(long long);
+	if (!align)
+		align = SMP_CACHE_BYTES;
 
 	/* align @size to avoid excessive fragmentation on reserved array */
 	size = round_up(size, align);
-- 
1.7.9.5