函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:mm\hugetlb.c Create Date:2022-07-27 16:58:08
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：This routine is called to restore a reservation on error paths

函数原型：static void restore_reserve_on_error(struct hstate *h, struct vm_area_struct *vma, unsigned long address, struct page *page)

返回类型：void

参数：

类型参数名称
struct hstate *h
struct vm_area_struct *vma
unsigned longaddress
struct page *page
1966  如果此条件成立可能性小(为编译器优化)(Private page markings that may be used by the filesystem that owns the page* for its own purposes.* - PG_private and PG_private_2 cause releasepage() and co to be invoked)则
1967  rc等于vma_needs_reservation(h, vma, address)
1969  如果此条件成立可能性小(为编译器优化)(rc < 0)则
1981  Private page markings that may be used by the filesystem that owns the page* for its own purposes.* - PG_private and PG_private_2 cause releasepage() and co to be invoked
1982  否则如果rc则
1983  rc等于vma_add_reservation(h, vma, address)
1984  如果此条件成立可能性小(为编译器优化)(rc < 0)则Private page markings that may be used by the filesystem that owns the page* for its own purposes.* - PG_private and PG_private_2 cause releasepage() and co to be invoked
1990  否则vma_end_reservation(h, vma, address)
调用者
名称描述
hugetlb_cowHugetlb_cow() should be called with page lock of the original hugepage held.* Called with hugetlb_instantiation_mutex held and pte_page locked so we* cannot race with other handlers or page migration.
hugetlb_no_page