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

[Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>]

Hi all,

After merging the mm tree, today's linux-next build (sparc64 defconfig)
failed like this:

sparc64-linux-ld: mm/vmstat.o: in function `cpu_vm_stats_fold':
vmstat.c:(.text+0x2a18): undefined reference to `__xchg_called_with_bad_pointer'
sparc64-linux-ld: vmstat.c:(.text+0x2a98): undefined reference to `__xchg_called_with_bad_pointer'

Caused by commit

  676a3befc9ba ("mm/vmstat: use xchg in cpu_vm_stats_fold")

Sparc does not support xchg() on 8 bit variables.

I have reverted the above commit (and the 2 following ones) for today.

-- 
Cheers,
Stephen Rothwell

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