On Wed, 20 Mar 2019 14:08:29 +0800 Yue Hu <zbestahu@xxxxxxxxx> wrote: > Currently one bit in cma bitmap represents number of pages rather than > one page, cma->count means cma size in pages. So to find available pages > via find_next_zero_bit()/find_next_bit() we should use cma size not in > pages but in bits although current free pages number is correct due to > zero value of order_per_bit. Once order_per_bit is changed the bitmap > status will be incorrect. When fixing a bug, please always describe the end-user visible runtime effects of that bug?
