Re: [akpm-mm:mm-new 31/59] mm/mm_init.c:1512:30: error: 'PAGE_BLOCK_ORDER' undeclared; did you mean 'PAGE_BLOCK_ORDER_CEIL'?

[Zi Yan <ziy@nvidia.com>]

On 4 Jun 2025, at 9:06, kernel test robot wrote:

> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-new
> head:   80bb0b2983e95be26d929303d589276875c8900a
> commit: 2bb7d2079ada079bd9f25c92e6a4618ee1ce22db [31/59] mm: rename CONFIG_PAGE_BLOCK_ORDER to CONFIG_PAGE_BLOCK_ORDER_CEIL.
> config: powerpc64-randconfig-002-20250604 (https://download.01.org/0day-ci/archive/20250604/202506042058.XgvABCE0-lkp@intel.com/config)
> compiler: powerpc64-linux-gcc (GCC) 11.5.0
> reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250604/202506042058.XgvABCE0-lkp@intel.com/reproduce)
>
> If you fix the issue in a separate patch/commit (i.e. not just a new version of
> the same patch/commit), kindly add following tags
> | Reported-by: kernel test robot <lkp@intel.com>
> | Closes: https://lore.kernel.org/oe-kbuild-all/202506042058.XgvABCE0-lkp@intel.com/
>
> All errors (new ones prefixed by >>):
>
>    mm/mm_init.c: In function 'set_pageblock_order':
>>> mm/mm_init.c:1512:30: error: 'PAGE_BLOCK_ORDER' undeclared (first use in this function); did you mean 'PAGE_BLOCK_ORDER_CEIL'?
>     1512 |         unsigned int order = PAGE_BLOCK_ORDER;
>          |                              ^~~~~~~~~~~~~~~~
>          |                              PAGE_BLOCK_ORDER_CEIL
>    mm/mm_init.c:1512:30: note: each undeclared identifier is reported only once for each function it appears in
>
>
> vim +1512 mm/mm_init.c
>
Thanks. This patch should fix it.

From 616cc58d747d4b1c03e8db613b7f05c5005134d4 Mon Sep 17 00:00:00 2001
From: Zi Yan <ziy@nvidia.com>
Date: Wed, 4 Jun 2025 09:27:03 -0400
Subject: [PATCH] fixup: rename the missed PAGE_BLOCK_ORDER to
 PAGE_BLOCK_ORDER_CEIL.

Signed-off-by: Zi Yan <ziy@nvidia.com>
---
 mm/mm_init.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/mm_init.c b/mm/mm_init.c
index f2944748f526..38a1abd49e57 100644
--- a/mm/mm_init.c
+++ b/mm/mm_init.c
@@ -1509,7 +1509,7 @@ static inline void setup_usemap(struct zone *zone) {}
 /* Initialise the number of pages represented by NR_PAGEBLOCK_BITS */
 void __init set_pageblock_order(void)
 {
-	unsigned int order = PAGE_BLOCK_ORDER;
+	unsigned int order = PAGE_BLOCK_ORDER_CEIL;

 	/* Check that pageblock_nr_pages has not already been setup */
 	if (pageblock_order)
-- 
2.47.2



--
Best Regards,
Yan, Zi