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authorChi Wu <wuchi.zero@gmail.com>2021-06-29 05:35:34 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2021-06-29 20:53:47 +0300
commit0323155437870dbbae6e30fb659d7514c9f649da (patch)
treeaa7ca66262147bd3c046de1e54c49a2f6dfaec0a /mm/page-writeback.c
parentab19939a6a5010cba4e9cb04dd8bee03c72edcbd (diff)
downloadlinux-0323155437870dbbae6e30fb659d7514c9f649da.tar.xz
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> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/page-writeback.c')
-rw-r--r--mm/page-writeback.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index aff3205dfde5..d0f090d682f5 100644
--- 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 * * * * * * *
* | .*
* | . *
* | . *