[merged mm-stable] mm-add-bdi_set_max_ratio_no_scale-function.patch removed from -mm tree

[merged mm-stable] mm-add-bdi_set_max_ratio_no_scale-function.patch removed from -mm tree

[Andrew Morton]

The quilt patch titled
     Subject: mm: add bdi_set_max_ratio_no_scale() function
has been removed from the -mm tree.  Its filename was
     mm-add-bdi_set_max_ratio_no_scale-function.patch

This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

------------------------------------------------------
From: Stefan Roesch <shr@devkernel.io>
Subject: mm: add bdi_set_max_ratio_no_scale() function
Date: Fri, 18 Nov 2022 16:52:10 -0800

This introduces bdi_set_max_ratio_no_scale(). It uses the max
granularity for the ratio. This function by the new sysfs knob
max_ratio_fine.

Link: https://lkml.kernel.org/r/20221119005215.3052436-16-shr@devkernel.io
Signed-off-by: Stefan Roesch <shr@devkernel.io>
Cc: Chris Mason <clm@meta.com>
Cc: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 include/linux/backing-dev.h |    1 +
 mm/page-writeback.c         |   11 ++++++++---
 2 files changed, 9 insertions(+), 3 deletions(-)

--- a/include/linux/backing-dev.h~mm-add-bdi_set_max_ratio_no_scale-function
+++ a/include/linux/backing-dev.h
@@ -109,6 +109,7 @@ u64 bdi_get_min_bytes(struct backing_dev
 u64 bdi_get_max_bytes(struct backing_dev_info *bdi);
 int bdi_set_min_ratio(struct backing_dev_info *bdi, unsigned int min_ratio);
 int bdi_set_max_ratio(struct backing_dev_info *bdi, unsigned int max_ratio);
+int bdi_set_max_ratio_no_scale(struct backing_dev_info *bdi, unsigned int max_ratio);
 int bdi_set_min_bytes(struct backing_dev_info *bdi, u64 min_bytes);
 int bdi_set_max_bytes(struct backing_dev_info *bdi, u64 max_bytes);
 int bdi_set_strict_limit(struct backing_dev_info *bdi, unsigned int strict_limit);
--- a/mm/page-writeback.c~mm-add-bdi_set_max_ratio_no_scale-function
+++ a/mm/page-writeback.c
@@ -719,6 +719,9 @@ static int __bdi_set_max_ratio(struct ba
 {
 	int ret = 0;
 
+	if (max_ratio > 100 * BDI_RATIO_SCALE)
+		return -EINVAL;
+
 	spin_lock_bh(&bdi_lock);
 	if (bdi->min_ratio > max_ratio) {
 		ret = -EINVAL;
@@ -731,6 +734,11 @@ static int __bdi_set_max_ratio(struct ba
 	return ret;
 }
 
+int bdi_set_max_ratio_no_scale(struct backing_dev_info *bdi, unsigned int max_ratio)
+{
+	return __bdi_set_max_ratio(bdi, max_ratio);
+}
+
 int bdi_set_min_ratio(struct backing_dev_info *bdi, unsigned int min_ratio)
 {
 	return __bdi_set_min_ratio(bdi, min_ratio * BDI_RATIO_SCALE);
@@ -738,9 +746,6 @@ int bdi_set_min_ratio(struct backing_dev
 
 int bdi_set_max_ratio(struct backing_dev_info *bdi, unsigned int max_ratio)
 {
-	if (max_ratio > 100)
-		return -EINVAL;
-
 	return __bdi_set_max_ratio(bdi, max_ratio * BDI_RATIO_SCALE);
 }
 EXPORT_SYMBOL(bdi_set_max_ratio);
_

Patches currently in -mm which might be from shr@devkernel.io are