Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:mm\page_alloc.c Create Date:2022-07-28 15:05:16
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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Annotation kernel can get tool activityDownload SCCTChinese

Name:zone_watermark_ok

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

Type:bool

Parameter:

TypeParameterName
struct zone *z
unsigned intorder
unsigned longmark
intclasszone_idx
unsigned intalloc_flags
3472  Return 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
Caller
NameDescribe
__isolate_free_page
get_page_from_freelistget_page_from_freelist goes through the zonelist trying to allocate* a page.
should_compact_retry