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docs: admin-guide: Fix default value of max_map_count in sysctl/vm.rst

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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>
Link: https://lore.kernel.org/r/20201210082134.36957-1-xi.fengfei@h3c.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
This commit is contained in:
Fengfei Xi
2020-12-10 16:21:34 +08:00
committed by Jonathan Corbet
parent 9bf19b78a2
commit c635b0cea6
1 changed files with 1 additions and 1 deletions
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2
Documentation/admin-guide/sysctl/vm.rst
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@@ -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: