Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:mm\mmap.c Create Date:2022-07-28 14:50:43
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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Annotation kernel can get tool activityDownload SCCTChinese

Name:Initialise sysctl_user_reserve_kbytes.* This is intended to prevent a user from starting a single memory hogging* process, such that they cannot recover (kill the hog) in OVERCOMMIT_NEVER* mode.* The default value is min(3% of free memory, 128MB)

Proto:static int init_user_reserve(void)

Type:int

Parameter:Nothing

3650  free_kbytes = global_zone_page_state( First 128 byte cacheline (assuming 64 bit words) ) << PAGE_SHIFT determines the page size - 10
3652  sysctl_user_reserve_kbytes = min - return minimum of two values of the same or compatible types*@x: first value*@y: second value(free_kbytes / 32, 1UL << 17)
3653  Return 0
Caller
NameDescribe
reserve_mem_notifierReinititalise user and admin reserves if memory is added or removed