On 02/04/2016 07:19 AM, Joonsoo Kim wrote: > pageblock_pfn_to_page() is used to check there is valid pfn and all pages > in the pageblock is in a single zone. If there is a hole in the pageblock, > passing arbitrary position to pageblock_pfn_to_page() could cause to skip > whole pageblock scanning, instead of just skipping the hole page. For > deterministic behaviour, it's better to always pass pageblock aligned > range to pageblock_pfn_to_page(). It will also help further optimization > on pageblock_pfn_to_page() in the following patch. > > Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx> Acked-by: Vlastimil Babka <vbabka@xxxxxxx> -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>