Function report |
Source Code:mm\memory.c |
Create Date:2022-07-28 14:43:53 |
Last Modify:2020-03-12 14:18:49 | Copyright©Brick |
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Annotation kernel can get tool activity | Download SCCT | Chinese |
Name:Access another process' address space as given in mm. If non-NULL, use the* given task for page fault accounting.
Proto:int __access_remote_vm(struct task_struct *tsk, struct mm_struct *mm, unsigned long addr, void *buf, int len, unsigned int gup_flags)
Type:int
Parameter:
Type | Parameter | Name |
---|---|---|
struct task_struct * | tsk | |
struct mm_struct * | mm | |
unsigned long | addr | |
void * | buf | |
int | len | |
unsigned int | gup_flags |
4467 | write = gup_flags & check pte is writable |
4469 | If down_read_killable( & mmap_sem) Then Return 0 |
4478 | ret = get_user_pages_remote() - pin user pages in memory*@tsk: the task_struct to use for page fault accounting, or* NULL if faults are not to be recorded |
4480 | If ret <= 0 Then |
4482 | Break |
4498 | Else |
4520 | lease a read lock |
Name | Describe |
---|---|
access_remote_vm | access_remote_vm - access another process' address space*@mm: the mm_struct of the target address space*@addr: start address to access*@buf: source or destination buffer*@len: number of bytes to transfer*@gup_flags: flags modifying lookup behaviour |
access_process_vm | Access another process' address space.* Source/target buffer must be kernel space,* Do not walk the page table directly, use get_user_pages |
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