There is v3 with #ifdef, it fixes the problem.
Thanks,
Kirill
On 10.08.2018 08:54, kbuild test robot wrote:
> tree: git://git.cmpxchg.org/linux-mmotm.git master
> head: b1da01df1aa700864692a49a7007fc96cc1da7d9
> commit: f9ee2a2d698cd64d8032d56649e960a91bb98416 [124/394] mm: use special value SHRINKER_REGISTERING instead list_empty() check
> config: i386-tinyconfig (attached as .config)
> compiler: gcc-7 (Debian 7.3.0-16) 7.3.0
> reproduce:
> git checkout f9ee2a2d698cd64d8032d56649e960a91bb98416
> # save the attached .config to linux build tree
> make ARCH=i386
>
> Note: the mmotm/master HEAD b1da01df1aa700864692a49a7007fc96cc1da7d9 builds fine.
> It only hurts bisectibility.
>
> All errors (new ones prefixed by >>):
>
> mm/vmscan.c: In function 'register_shrinker_prepared':
>>> mm/vmscan.c:410:15: error: 'shrinker_idr' undeclared (first use in this function); did you mean 'shrinker_list'?
> idr_replace(&shrinker_idr, shrinker, shrinker->id);
> ^~~~~~~~~~~~
> shrinker_list
> mm/vmscan.c:410:15: note: each undeclared identifier is reported only once for each function it appears in
>>> mm/vmscan.c:410:47: error: 'struct shrinker' has no member named 'id'
> idr_replace(&shrinker_idr, shrinker, shrinker->id);
> ^~
>
> vim +410 mm/vmscan.c
>
> 405
> 406 void register_shrinker_prepared(struct shrinker *shrinker)
> 407 {
> 408 down_write(&shrinker_rwsem);
> 409 list_add_tail(&shrinker->list, &shrinker_list);
> > 410 idr_replace(&shrinker_idr, shrinker, shrinker->id);
> 411 up_write(&shrinker_rwsem);
> 412 }
> 413
>
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