+ mm-page-writeback-update-the-comment-of-dirty-position-control.patch added to -mm tree

+ mm-page-writeback-update-the-comment-of-dirty-position-control.patch added to -mm tree

[akpm]

The patch titled
     Subject: mm/page-writeback: update the comment of Dirty position control
has been added to the -mm tree.  Its filename is
     mm-page-writeback-update-the-comment-of-dirty-position-control.patch

This patch should soon appear at
    https://ozlabs.org/~akpm/mmots/broken-out/mm-page-writeback-update-the-comment-of-dirty-position-control.patch
and later at
    https://ozlabs.org/~akpm/mmotm/broken-out/mm-page-writeback-update-the-comment-of-dirty-position-control.patch

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------------------------------------------------------
From: Chi Wu <wuchi.zero@gmail.com>
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@gmail.com
Signed-off-by: Chi Wu <wuchi.zero@gmail.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Cc: Jens Axboe <axboe@fb.com>
Cc: Howard Cochran <hcochran@kernelspring.com>
Cc: Miklos Szeredi <mszeredi@redhat.com>
Cc: Sedat Dilek <sedat.dilek@gmail.com>
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 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  * * * * * * *
  *     |            .*
  *     |            . *
  *     |            .   *
_

Patches currently in -mm which might be from wuchi.zero@gmail.com are

mm-page-writeback-fix-performance-when-bdis-share-of-ratio-is-0.patch
mm-page-writeback-update-the-comment-of-dirty-position-control.patch