The patch titled
Subject: mm: split off __bdi_set_max_ratio() function
has been added to the -mm mm-unstable branch. Its filename is
mm-split-off-__bdi_set_max_ratio-function.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-split-off-__bdi_set_max_ratio-function.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Stefan Roesch <shr@xxxxxxxxxxxx>
Subject: mm: split off __bdi_set_max_ratio() function
Date: Fri, 18 Nov 2022 16:52:01 -0800
This splits off __bdi_set_max_ratio() from bdi_set_max_ratio().
__bdi_set_max_ratio() will also be called from bdi_set_max_bytes(),
which will be introduced in the next patch.
Link: https://lkml.kernel.org/r/20221119005215.3052436-7-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>
---
mm/page-writeback.c | 14 +++++++++-----
1 file changed, 9 insertions(+), 5 deletions(-)
--- a/mm/page-writeback.c~mm-split-off-__bdi_set_max_ratio-function
+++ a/mm/page-writeback.c
@@ -692,14 +692,10 @@ int bdi_set_min_ratio(struct backing_dev
return ret;
}
-int bdi_set_max_ratio(struct backing_dev_info *bdi, unsigned max_ratio)
+static int __bdi_set_max_ratio(struct backing_dev_info *bdi, unsigned int max_ratio)
{
int ret = 0;
- if (max_ratio > 100)
- return -EINVAL;
- max_ratio *= BDI_RATIO_SCALE;
-
spin_lock_bh(&bdi_lock);
if (bdi->min_ratio > max_ratio) {
ret = -EINVAL;
@@ -711,6 +707,14 @@ int bdi_set_max_ratio(struct backing_dev
return ret;
}
+
+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);
u64 bdi_get_max_bytes(struct backing_dev_info *bdi)
_
Patches currently in -mm which might be from shr@xxxxxxxxxxxx are
mm-add-bdi_set_strict_limit-function.patch
mm-add-knob-sys-class-bdi-bdi-strict_limit.patch
mm-document-sys-class-bdi-bdi-strict_limit-knob.patch
mm-use-part-per-1000000-for-bdi-ratios.patch
mm-add-bdi_get_max_bytes-function.patch
mm-split-off-__bdi_set_max_ratio-function.patch
mm-add-bdi_set_max_bytes-function.patch
mm-add-knob-sys-class-bdi-bdi-max_bytes.patch
mm-document-sys-class-bdi-bdi-max_bytes-knob.patch
mm-add-bdi_get_min_bytes-function.patch
mm-split-off-__bdi_set_min_ratio-function.patch
mm-add-bdi_set_min_bytes-function.patch
mm-add-sys-class-bdi-bdi-min_bytes-knob.patch
mm-document-sys-class-bdi-bdi-min_bytes-knob.patch
mm-add-bdi_set_max_ratio_no_scale-function.patch
mm-add-sys-class-bdi-bdi-max_ratio_fine-knob.patch
mm-document-sys-class-bdi-bdi-max_ratio_fine-knob.patch
mm-add-bdi_set_min_ratio_no_scale-function.patch
mm-add-sys-class-bdi-bdi-min_ratio_fine-knob.patch
mm-document-sys-class-bdi-bdi-min_ratio_fine-knob.patch
