From: Fengfei Xi <xi.fengfei@h3c.com>
To: <corbet@lwn.net>
Cc: <linux-doc@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
Fengfei Xi <xi.fengfei@h3c.com>
Subject: [PATCH] docs: admin-guide: Fix default value of max_map_count in sysctl/vm.rst
Date: Thu, 10 Dec 2020 16:21:34 +0800 [thread overview]
Message-ID: <20201210082134.36957-1-xi.fengfei@h3c.com> (raw)
Since the default value of sysctl_max_map_count is defined as
DEFAULT_MAX_MAP_COUNT from mm/util.c
int sysctl_max_map_count __read_mostly = DEFAULT_MAX_MAP_COUNT;
DEFAULT_MAX_MAP_COUNT is defined as 65530 (65535-5) in include/linux/mm.h
#define MAPCOUNT_ELF_CORE_MARGIN (5)
#define DEFAULT_MAX_MAP_COUNT (USHRT_MAX - MAPCOUNT_ELF_CORE_MARGIN)
Signed-off-by: Fengfei Xi <xi.fengfei@h3c.com>
---
Documentation/admin-guide/sysctl/vm.rst | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/Documentation/admin-guide/sysctl/vm.rst b/Documentation/admin-guide/sysctl/vm.rst
index f455fa00c..834c3fc74 100644
--- a/Documentation/admin-guide/sysctl/vm.rst
+++ b/Documentation/admin-guide/sysctl/vm.rst
@@ -428,7 +428,7 @@ While most applications need less than a thousand maps, certain
programs, particularly malloc debuggers, may consume lots of them,
e.g., up to one or two maps per allocation.
-The default value is 65536.
+The default value is 65530.
memory_failure_early_kill:
--
2.17.1
next reply other threads:[~2020-12-10 10:14 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-10 8:21 Fengfei Xi [this message]
2020-12-21 16:59 ` [PATCH] docs: admin-guide: Fix default value of max_map_count in sysctl/vm.rst Jonathan Corbet
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