函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:mm\page_alloc.c Create Date:2022-07-27 16:35:22
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：zone_watermark_ok

函数原型：bool zone_watermark_ok(struct zone *z, unsigned int order, unsigned long mark, int classzone_idx, unsigned int alloc_flags)

返回类型：bool

参数：

类型参数名称
struct zone *z
unsigned intorder
unsigned longmark
intclasszone_idx
unsigned intalloc_flags
3472  返回:Return true if free base pages are above 'mark'. For high-order checks it* will return true of the order-0 watermark is reached and there is at least* one free page of a suitable size. Checking now avoids taking the zone lock
调用者
名称描述
__isolate_free_page
get_page_from_freelistget_page_from_freelist goes through the zonelist trying to allocate* a page.
should_compact_retry