linux-kernel - mm/page_alloc.c:5662:23: error: 'fragz' undeclared; did you mean 'fragsz'?

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Date:   Wed, 1 Jun 2022 06:38:56 +0800
From:   kernel test robot <lkp@...el.com>
To:     Chen Lin <chen45464546@....com>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        0day robot <lkp@...el.com>
Subject: mm/page_alloc.c:5662:23: error: 'fragz' undeclared; did you mean
 'fragsz'?

tree:   https://github.com/intel-lab-lkp/linux/commits/UPDATE-20220531-224555/Chen-Lin/mm-page_frag-Warn_on-when-frag_alloc-size-is-bigger-than-PAGE_SIZE/20220528-234129
head:   21e940b5a66de64088e93248c21bce241c28a556
commit: 21e940b5a66de64088e93248c21bce241c28a556 mm: page_frag: Warn_on when frag_alloc size is bigger than PAGE_SIZE
date:   8 hours ago
config: x86_64-rhel-8.3 (https://download.01.org/0day-ci/archive/20220601/202206010617.PBI0ZWvr-lkp@intel.com/config)
compiler: gcc-11 (Debian 11.3.0-1) 11.3.0
reproduce (this is a W=1 build):
        # https://github.com/intel-lab-lkp/linux/commit/21e940b5a66de64088e93248c21bce241c28a556
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review UPDATE-20220531-224555/Chen-Lin/mm-page_frag-Warn_on-when-frag_alloc-size-is-bigger-than-PAGE_SIZE/20220528-234129
        git checkout 21e940b5a66de64088e93248c21bce241c28a556
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@...el.com>

All errors (new ones prefixed by >>):

   In file included from include/asm-generic/bug.h:7,
                    from arch/x86/include/asm/bug.h:87,
                    from include/linux/bug.h:5,
                    from include/linux/mmdebug.h:5,
                    from include/linux/mm.h:6,
                    from mm/page_alloc.c:19:
   mm/page_alloc.c: In function 'page_frag_alloc_align':
>> mm/page_alloc.c:5662:23: error: 'fragz' undeclared (first use in this function); did you mean 'fragsz'?
    5662 |         if (WARN_ONCE(fragz > PAGE_SIZE,
         |                       ^~~~~
   include/linux/once_lite.h:15:41: note: in definition of macro 'DO_ONCE_LITE_IF'
      15 |                 bool __ret_do_once = !!(condition);                     \
         |                                         ^~~~~~~~~
   mm/page_alloc.c:5662:13: note: in expansion of macro 'WARN_ONCE'
    5662 |         if (WARN_ONCE(fragz > PAGE_SIZE,
         |             ^~~~~~~~~
   mm/page_alloc.c:5662:23: note: each undeclared identifier is reported only once for each function it appears in
    5662 |         if (WARN_ONCE(fragz > PAGE_SIZE,
         |                       ^~~~~
   include/linux/once_lite.h:15:41: note: in definition of macro 'DO_ONCE_LITE_IF'
      15 |                 bool __ret_do_once = !!(condition);                     \
         |                                         ^~~~~~~~~
   mm/page_alloc.c:5662:13: note: in expansion of macro 'WARN_ONCE'
    5662 |         if (WARN_ONCE(fragz > PAGE_SIZE,
         |             ^~~~~~~~~


vim +5662 mm/page_alloc.c

  5649	
  5650	void *page_frag_alloc_align(struct page_frag_cache *nc,
  5651			      unsigned int fragsz, gfp_t gfp_mask,
  5652			      unsigned int align_mask)
  5653	{
  5654		unsigned int size = PAGE_SIZE;
  5655		struct page *page;
  5656		int offset;
  5657	
  5658		/*
  5659		 * frag_alloc is not suitable for memory alloc which fragsz
  5660		 * is bigger than PAGE_SIZE, use kmalloc or alloc_pages instead.
  5661		 */
> 5662		if (WARN_ONCE(fragz > PAGE_SIZE,
  5663			      "alloc fragsz(%d) > PAGE_SIZE(%ld) not supported, alloc fail\n",
  5664			      fragsz, PAGE_SIZE))
  5665			return NULL;
  5666	
  5667		if (unlikely(!nc->va)) {
  5668	refill:
  5669			page = __page_frag_cache_refill(nc, gfp_mask);
  5670			if (!page)
  5671				return NULL;
  5672	

-- 
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