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@xxxxxxxxxxxx>
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@xxxxxxxxxxxx
Signed-off-by: Stefan Roesch <shr@xxxxxxxxxxxx>
Cc: Chris Mason <clm@xxxxxxxx>
Cc: Jens Axboe <axboe@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
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@xxxxxxxxxxxx are
