Function report |
Source Code:include\linux\mm.h |
Create Date:2022-07-28 05:43:28 |
Last Modify:2020-03-12 14:18:49 | Copyright©Brick |
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Name:Do pte_mkwrite, but only if the vma says VM_WRITE. We do this when* servicing faults for write access. In the normal case, do always want* pte_mkwrite. But get_user_pages can cause write faults for mappings
Proto:static inline pte_t maybe_mkwrite(pte_t pte, struct vm_area_struct *vma)
Type:pte_t
Parameter:
Type | Parameter | Name |
---|---|---|
pte_t | pte | |
struct vm_area_struct * | vma |
817 | If Value is more likely to compile time(Flags, see mm.h. & VM_WRITE) Then pte = pte_mkwrite(pte) |
819 | Return pte |
Name | Describe |
---|---|
insert_pfn | |
wp_page_reuse | Handle write page faults for pages that can be reused in the current vma* This can happen either due to the mapping being with the VM_SHARED flag,* or due to us being the last reference standing to the page |
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_swap_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 pte unmapped and unlocked.* We return with the mmap_sem locked or unlocked in the same cases |
alloc_set_pte | alloc_set_pte - setup new PTE entry for given page and add reverse page* mapping |
remove_migration_pte | Restore a potential migration pte to a working pte entry |
do_huge_pmd_wp_page_fallback | |
__split_huge_pmd_locked |
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