vmalloc with GFP_NOFS

[Richard Weinberger]

Am Dienstag, 24. April 2018, 21:28:03 CEST schrieb Michal Hocko:
> > Also only for debugging.
> > Getting rid of vmalloc with GFP_NOFS in UBIFS is no big problem.
> > I can prepare a patch.
> 
> Cool!
> 
> Anyway, if UBIFS has some reclaim recursion critical sections in general
> it would be really great to have them documented and that is where the
> scope api is really handy. Just add the scope and document what is the
> recursion issue. This will help people reading the code as well. Ideally
> there shouldn't be any explicit GFP_NOFS in the code.

So in a perfect world a filesystem calls memalloc_nofs_save/restore and
always uses GFP_KERNEL for kmalloc/vmalloc?

Thanks,
//richard