From: Chi Wu <wuchi.zero@xxxxxxxxx> Subject: mm/page-writeback: update the comment of Dirty position control As the value of pos_ratio_polynom() clamp between 0 and 2LL << RATELIMIT_CALC_SHIFT, the global control line should be consistent with it. Link: https://lkml.kernel.org/r/20210511103606.3732-1-wuchi.zero@xxxxxxxxx Signed-off-by: Chi Wu <wuchi.zero@xxxxxxxxx> Reviewed-by: Jan Kara <jack@xxxxxxx> Cc: Jens Axboe <axboe@xxxxxx> Cc: Howard Cochran <hcochran@xxxxxxxxxxxxxxxx> Cc: Miklos Szeredi <mszeredi@xxxxxxxxxx> Cc: Sedat Dilek <sedat.dilek@xxxxxxxxx> Cc: Tejun Heo <tj@xxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- mm/page-writeback.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/mm/page-writeback.c~mm-page-writeback-update-the-comment-of-dirty-position-control +++ a/mm/page-writeback.c @@ -845,7 +845,7 @@ static long long pos_ratio_polynom(unsig * ^ pos_ratio * | * | |<===== global dirty control scope ======>| - * 2.0 .............* + * 2.0 * * * * * * * * | .* * | . * * | . * _
