linux-next: build failure after merge of the slab tree

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Hi all,

After merging the slab tree, today's linux-next build (powerpc
ppc64_defconfig) failed like this:

mm/slab_common.c: In function 'kmem_dump_obj':
mm/slab_common.c:603:49: error: 'struct kmem_cache' has no member named 'usersize'
  603 |         if (kp.kp_slab_cache && kp.kp_slab_cache->usersize)
      |                                                 ^~
In file included from include/asm-generic/bug.h:22,
                 from arch/powerpc/include/asm/bug.h:159,
                 from include/linux/bug.h:5,
                 from include/linux/thread_info.h:13,
                 from include/asm-generic/preempt.h:5,
                 from ./arch/powerpc/include/generated/asm/preempt.h:1,
                 from include/linux/preempt.h:78,
                 from include/linux/spinlock.h:56,
                 from include/linux/mmzone.h:8,
                 from include/linux/gfp.h:7,
                 from include/linux/slab.h:15,
                 from mm/slab_common.c:7:
mm/slab_common.c:604:53: error: 'struct kmem_cache' has no member named 'usersize'
  604 |                 pr_cont(" size %u", kp.kp_slab_cache->usersize);
      |                                                     ^~
include/linux/printk.h:429:33: note: in definition of macro 'printk_index_wrap'
  429 |                 _p_func(_fmt, ##__VA_ARGS__);                           \
      |                                 ^~~~~~~~~~~
include/linux/printk.h:542:9: note: in expansion of macro 'printk'
  542 |         printk(KERN_CONT fmt, ##__VA_ARGS__)
      |         ^~~~~~
mm/slab_common.c:604:17: note: in expansion of macro 'pr_cont'
  604 |                 pr_cont(" size %u", kp.kp_slab_cache->usersize);
      |                 ^~~~~~~

Caused by commit

  3cdb7b6ad16a ("mm, slab: ignore hardened usercopy parameters when disabled")

I have used the slab tree from next-20221123 for today.

-- 
Cheers,
Stephen Rothwell

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