Function report |
Source Code:include\linux\highmem.h |
Create Date:2022-07-28 05:44:54 |
| Last Modify:2020-03-12 14:18:49 | Copyright©Brick |
| home page | Tree |
| Annotation kernel can get tool activity | Download SCCT | Chinese |
Name:alloc_zeroed_user_highpage_movable - Allocate a zeroed HIGHMEM page for a VMA that the caller knows can move*@vma: The VMA the page is to be allocated for*@vaddr: The virtual address the page will be inserted into* This function will allocate a page for a
Proto:static inline struct page *alloc_zeroed_user_highpage_movable(struct vm_area_struct *vma, unsigned long vaddr)
Type:struct page
Parameter:
| Type | Parameter | Name |
|---|---|---|
| struct vm_area_struct * | vma | |
| unsigned long | vaddr |
| 208 | Return __alloc_zeroed_user_highpage(ZONE_MOVABLE allowed , vma, vaddr) |
| Name | Describe |
|---|---|
| wp_page_copy | Handle the case of a page which we actually need to copy to a new page.* Called with mmap_sem locked and the old page referenced, but* without the ptl held.* High level logic flow:* - Allocate a page, copy the content of the old page to the new one. |
| do_anonymous_page | We enter with non-exclusive mmap_sem (to exclude vma changes,* but allow concurrent faults), and pte mapped but not yet locked.* We return with mmap_sem still held, but pte unmapped and unlocked. |
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