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/[email protected] Signed-off-by: Chi Wu <[email protected]> Reviewed-by: Jan Kara <[email protected]> Cc: Jens Axboe <[email protected]> Cc: Howard Cochran <[email protected]> Cc: Miklos Szeredi <[email protected]> Cc: Sedat Dilek <[email protected]> Cc: Tejun Heo <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
wafgo · Jun 29, 2021 · 0323155 · 0323155
1 parent ab19939
commit 0323155
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/mm/page-writeback.c b/mm/page-writeback.c
@@ -845,7 +845,7 @@ static long long pos_ratio_polynom(unsigned long setpoint,
  *     ^ pos_ratio
  *     |
  *     |            |<===== global dirty control scope ======>|
- * 2.0 .............*
+ * 2.0  * * * * * * *
  *     |            .*
  *     |            . *
  *     |            .   *