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

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

[Andrew Morton]

The quilt patch titled
     Subject: mm: add bdi_set_min_bytes() function
has been removed from the -mm tree.  Its filename was
     mm-add-bdi_set_min_bytes-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_min_bytes() function
Date: Fri, 18 Nov 2022 16:52:07 -0800

This introduces the bdi_set_min_bytes() function. The min_bytes function
does not store the min_bytes value. Instead it converts the min_bytes
value into the corresponding ratio value.

Link: https://lkml.kernel.org/r/20221119005215.3052436-13-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         |   14 ++++++++++++++
 2 files changed, 15 insertions(+)

--- a/include/linux/backing-dev.h~mm-add-bdi_set_min_bytes-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_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_min_bytes-function
+++ a/mm/page-writeback.c
@@ -750,6 +750,20 @@ u64 bdi_get_min_bytes(struct backing_dev
 	return bdi_get_bytes(bdi->min_ratio);
 }
 
+int bdi_set_min_bytes(struct backing_dev_info *bdi, u64 min_bytes)
+{
+	int ret;
+	unsigned long pages = min_bytes >> PAGE_SHIFT;
+	unsigned long min_ratio;
+
+	ret = bdi_check_pages_limit(pages);
+	if (ret)
+		return ret;
+
+	min_ratio = bdi_ratio_from_pages(pages);
+	return __bdi_set_min_ratio(bdi, min_ratio);
+}
+
 u64 bdi_get_max_bytes(struct backing_dev_info *bdi)
 {
 	return bdi_get_bytes(bdi->max_ratio);
_

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