函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:mm\khugepaged.c Create Date:2022-07-27 17:40:41
Last Modify:2020-03-12 14:18:49 Copyright©Brick
首页 函数Tree
注解内核,赢得工具下载SCCTEnglish

函数名称：__collapse_huge_page_copy

函数原型：static void __collapse_huge_page_copy(pte_t *pte, struct page *page, struct vm_area_struct *vma, unsigned long address, spinlock_t *ptl)

返回类型：void

参数：

类型参数名称
pte_t *pte
struct page *page
struct vm_area_struct *vma
unsigned longaddress
spinlock_t *ptl
652  以_pte小于pte加HPAGE_PMD_NR循环
654  pteval等于_pte
657  如果pte_none(pteval)或is_zero_pfn(pte_pfn(pteval))则
658  when CONFIG_HIGHMEM is not set these will be plain clear/copy_page
659  add_mm_counter(The address space we belong to. , MM_ANONPAGES, 1)
660  如果is_zero_pfn(pte_pfn(pteval))则
672  否则
673  src_page等于pte_page(pteval)
674  copy_user_highpage(page, src_page, address, vma)
675  VM_BUG_ON_PAGE(page_mapcount(src_page) != 1, src_page)
676  release_pte_page(src_page)
682  加自旋锁
687  pte_clear(The address space we belong to. , address, _pte)
688  page_remove_rmap - take down pte mapping from a page*@page: page to remove mapping from*@compound: uncharge the page as compound or small page* The caller needs to hold the pte lock.
689  自旋锁解锁
690  ly sparc can not include linux/pagemap.h in this file* so leave put_page and release_pages undeclared... (src_page)
调用者
名称描述
collapse_huge_page