函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:mm\memory.c Create Date:2022-07-27 16:06:30
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：free_pgtables

函数原型：void free_pgtables(struct mmu_gather *tlb, struct vm_area_struct *vma, unsigned long floor, unsigned long ceiling)

返回类型：void

参数：

类型参数名称
struct mmu_gather *tlb
struct vm_area_struct *vma
unsigned longfloor
unsigned longceiling
391  当vma循环
392  next等于linked list of VM areas per task, sorted by address
393  addr等于Our start address within vm_mm.
399  unlink_anon_vmas(vma)
400  unlink_file_vma(vma)
402  如果is_vm_hugetlb_page(vma)则
403  hugetlb_free_pgd_range(tlb, addr, The first byte after our end addresswithin vm_mm. , floor, next ? Our start address within vm_mm. : ceiling)
405  否则
409  当next且Our start address within vm_mm. 小于等于The first byte after our end addresswithin vm_mm. 加PMD_SIZE且非is_vm_hugetlb_page(next)循环
416  This function frees user-level page tables of a process.
419  vma等于next
调用者
名称描述
unmap_region
exit_mmapRelease all mmaps.