[merged] sysctl-change-watermark_scale_factor-max-limit-to-30%.patch removed from -mm tree

[akpm@linux-foundation.org]

The patch titled
     Subject: mm/pagealloc: sysctl: change watermark_scale_factor max limit to 30%
has been removed from the -mm tree.  Its filename was
     sysctl-change-watermark_scale_factor-max-limit-to-30%.patch

This patch was dropped because it was merged into mainline or a subsystem tree

------------------------------------------------------
From: Suren Baghdasaryan <surenb@google.com>
Subject: mm/pagealloc: sysctl: change watermark_scale_factor max limit to 30%

For embedded systems with low total memory, having to run applications
with relatively large memory requirements, 10% max limitation for
watermark_scale_factor poses an issue of triggering direct reclaim every
time such application is started.  This results in slow application
startup times and bad end-user experience.

By increasing watermark_scale_factor max limit we allow vendors more
flexibility to choose the right level of kswapd aggressiveness for their
device and workload requirements.

Link: https://lkml.kernel.org/r/20211124193604.2758863-1-surenb@google.com
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Lukas Middendorf <kernel@tuxforce.de>
Cc: Antti Palosaari <crope@iki.fi>
Cc: Luis Chamberlain <mcgrof@kernel.org>
Cc: Kees Cook <keescook@chromium.org>
Cc: Iurii Zaikin <yzaikin@google.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Zhang Yi <yi.zhang@huawei.com>
Cc: Fengfei Xi <xi.fengfei@h3c.com>
Cc: Mike Rapoport <rppt@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 Documentation/admin-guide/sysctl/vm.rst |    2 +-
 kernel/sysctl.c                         |    3 ++-
 2 files changed, 3 insertions(+), 2 deletions(-)

--- a/Documentation/admin-guide/sysctl/vm.rst~sysctl-change-watermark_scale_factor-max-limit-to-30%
+++ a/Documentation/admin-guide/sysctl/vm.rst
@@ -948,7 +948,7 @@ how much memory needs to be free before
 
 The unit is in fractions of 10,000. The default value of 10 means the
 distances between watermarks are 0.1% of the available memory in the
-node/system. The maximum value is 1000, or 10% of memory.
+node/system. The maximum value is 3000, or 30% of memory.
 
 A high rate of threads entering direct reclaim (allocstall) or kswapd
 going to sleep prematurely (kswapd_low_wmark_hit_quickly) can indicate
--- a/kernel/sysctl.c~sysctl-change-watermark_scale_factor-max-limit-to-30%
+++ a/kernel/sysctl.c
@@ -122,6 +122,7 @@ static unsigned long long_max = LONG_MAX
 static int one_hundred = 100;
 static int two_hundred = 200;
 static int one_thousand = 1000;
+static int three_thousand = 3000;
 #ifdef CONFIG_PRINTK
 static int ten_thousand = 10000;
 #endif
@@ -2959,7 +2960,7 @@ static struct ctl_table vm_table[] = {
 		.mode		= 0644,
 		.proc_handler	= watermark_scale_factor_sysctl_handler,
 		.extra1		= SYSCTL_ONE,
-		.extra2		= &one_thousand,
+		.extra2		= &three_thousand,
 	},
 	{
 		.procname	= "percpu_pagelist_high_fraction",
_

Patches currently in -mm which might be from surenb@google.com are