[LTP] fs/buffer.c: WARNING: alloc_page_buffers while mke2fs

[Tetsuo Handa]

On 2020/03/05 18:38, Jan Kara wrote:
> On Tue 03-03-20 14:15:24, Naresh Kamboju wrote:
>> [Sorry for the spam]
>>
>> Linux-next 5.6.0-rc3-next-20200302 running on arm64 juno-r2 device while
>> running LTP syscalls chown tests.
>>
>> Suspecting commits are (did not do git bisect),
>> b1473d5f3d0 fs/buffer.c: dump more info for __getblk_gfp() stall problem
>> b10a7ae6565 fs/buffer.c: add debug print for __getblk_gfp() stall problem
> 
> These are almost certainly unrelated. If I'm looking right, the warning is
> coming from memalloc_use_memcg() called from alloc_page_buffers()
> complaining that memcg to charge is already set. But I don't see how that
> would be possible (at least with today's linux-next). Can you reproduce the
> problem with today's linux-next?
> 

Already handled as
https://lore.kernel.org/linux-mm/20200303162948.a383cb88c4a1b0bfd3817798@linux-foundation.org/ .