Re: [PATCH v5 3/6] mm: make alloc_contig_range work at pageblock granularity

[Christoph Hellwig]

> +int
> +isolate_single_pageblock(unsigned long boundary_pfn, gfp_t gfp_flags, int isolate_before_boundary);

Please avoid the completely unreadably long line. i.e.

int isolate_single_pageblock(unsigned long boundary_pfn, gfp_t gfp_flags,
		int isolate_before_boundary);

Same in various other spots.