On Fri 16-11-18 13:51:19, Cristopher Lameter wrote: > On Fri, 16 Nov 2018, Masahiro Yamada wrote: > > > diff --git a/include/linux/slab.h b/include/linux/slab.h > > index 918f374..d395c73 100644 > > --- a/include/linux/slab.h > > +++ b/include/linux/slab.h > > @@ -329,7 +329,7 @@ static __always_inline enum kmalloc_cache_type > > kmalloc_type(gfp_t flags) > > * If an allocation is both __GFP_DMA and __GFP_RECLAIMABLE, return > > * KMALLOC_DMA and effectively ignore __GFP_RECLAIMABLE > > */ > > - return type_dma + (is_reclaimable & !is_dma) * KMALLOC_RECLAIM; > > + return type_dma + (is_reclaimable && !is_dma) * KMALLOC_RECLAIM; > > } > > Ok then lets revert the initial patch whose point was to avoid a branch. > && causes a branch again.
I believe Vlastimil managed to get rid of the branch http://lkml.kernel.org/r/[email protected] -- Michal Hocko SUSE Labs
