On Tue, Dec 03, 2024 at 10:47:31AM +0100, David Hildenbrand wrote: > In the __GFP_COMP case, we already pass the gfp_flags to > prep_new_page()->post_alloc_hook(). However, in the !__GFP_COMP case, we > essentially pass only hardcoded __GFP_MOVABLE to post_alloc_hook(), > preventing some action modifiers from being effective.. > > Let's pass our now properly adjusted gfp flags there as well. > > This way, we can now support __GFP_ZERO for alloc_contig_*(). > > As a side effect, we now also support __GFP_SKIP_ZERO and__GFP_ZEROTAGS; > but we'll keep the more special stuff (KASAN, NOLOCKDEP) disabled for > now. > > It's worth noting that with __GFP_ZERO, we might unnecessarily zero pages > when we have to release part of our range using free_contig_range() again. > This can be optimized in the future, if ever required; the caller we'll > be converting (powernv/memtrace) next won't trigger this. > > Signed-off-by: David Hildenbrand <da...@redhat.com>
Reviewed-by: Oscar Salvador <osalva...@suse.de> -- Oscar Salvador SUSE Labs
