22 struct vm_area_struct *find_dst_vma(struct mm_struct *dst_mm,  in find_dst_vma()  argument
32 	dst_vma = find_vma(dst_mm, dst_start);  in find_dst_vma()
57 int mfill_atomic_install_pte(struct mm_struct *dst_mm, pmd_t *dst_pmd,  in mfill_atomic_install_pte()  argument
83 	dst_pte = pte_offset_map_lock(dst_mm, dst_pmd, dst_addr, &ptl);  in mfill_atomic_install_pte()
108 	inc_mm_counter(dst_mm, mm_counter(page));  in mfill_atomic_install_pte()
113 	set_pte_at(dst_mm, dst_addr, dst_pte, _dst_pte);  in mfill_atomic_install_pte()
123 static int mcopy_atomic_pte(struct mm_struct *dst_mm,  in mcopy_atomic_pte()  argument
167 	if (mem_cgroup_charge(page, dst_mm, GFP_KERNEL))  in mcopy_atomic_pte()
170 	ret = mfill_atomic_install_pte(dst_mm, dst_pmd, dst_vma, dst_addr,  in mcopy_atomic_pte()
181 static int mfill_zeropage_pte(struct mm_struct *dst_mm,  in mfill_zeropage_pte()  argument
194 	dst_pte = pte_offset_map_lock(dst_mm, dst_pmd, dst_addr, &ptl);  in mfill_zeropage_pte()
207 	set_pte_at(dst_mm, dst_addr, dst_pte, _dst_pte);  in mfill_zeropage_pte()
217 static int mcontinue_atomic_pte(struct mm_struct *dst_mm,  in mcontinue_atomic_pte()  argument
236 	ret = mfill_atomic_install_pte(dst_mm, dst_pmd, dst_vma, dst_addr,  in mcontinue_atomic_pte()
277 static __always_inline ssize_t __mcopy_atomic_hugetlb(struct mm_struct *dst_mm,  in __mcopy_atomic_hugetlb()  argument
302 		mmap_read_unlock(dst_mm);  in __mcopy_atomic_hugetlb()
326 		dst_vma = find_dst_vma(dst_mm, dst_start, len);  in __mcopy_atomic_hugetlb()
362 		dst_pte = huge_pte_alloc(dst_mm, dst_vma, dst_addr, vma_hpagesize);  in __mcopy_atomic_hugetlb()
377 		err = hugetlb_mcopy_atomic_pte(dst_mm, dst_pte, dst_vma,  in __mcopy_atomic_hugetlb()
386 			mmap_read_unlock(dst_mm);  in __mcopy_atomic_hugetlb()
397 			mmap_read_lock(dst_mm);  in __mcopy_atomic_hugetlb()
417 	mmap_read_unlock(dst_mm);  in __mcopy_atomic_hugetlb()
428 extern ssize_t __mcopy_atomic_hugetlb(struct mm_struct *dst_mm,
436 static __always_inline ssize_t mfill_atomic_pte(struct mm_struct *dst_mm,  in mfill_atomic_pte()  argument
448 		return mcontinue_atomic_pte(dst_mm, dst_pmd, dst_vma, dst_addr,  in mfill_atomic_pte()
464 			err = mcopy_atomic_pte(dst_mm, dst_pmd, dst_vma,  in mfill_atomic_pte()
468 			err = mfill_zeropage_pte(dst_mm, dst_pmd,  in mfill_atomic_pte()
472 		err = shmem_mfill_atomic_pte(dst_mm, dst_pmd, dst_vma,  in mfill_atomic_pte()
481 static __always_inline ssize_t __mcopy_atomic(struct mm_struct *dst_mm,  in __mcopy_atomic()  argument
512 	mmap_read_lock(dst_mm);  in __mcopy_atomic()
528 	dst_vma = find_dst_vma(dst_mm, dst_start, len);  in __mcopy_atomic()
553 		return  __mcopy_atomic_hugetlb(dst_mm, dst_vma, dst_start,  in __mcopy_atomic()
576 		dst_pmd = mm_alloc_pmd(dst_mm, dst_addr);  in __mcopy_atomic()
592 		    unlikely(__pte_alloc(dst_mm, dst_pmd))) {  in __mcopy_atomic()
605 		err = mfill_atomic_pte(dst_mm, dst_pmd, dst_vma, dst_addr,  in __mcopy_atomic()
612 			mmap_read_unlock(dst_mm);  in __mcopy_atomic()
641 	mmap_read_unlock(dst_mm);  in __mcopy_atomic()
651 ssize_t mcopy_atomic(struct mm_struct *dst_mm, unsigned long dst_start,  in mcopy_atomic()  argument
655 	return __mcopy_atomic(dst_mm, dst_start, src_start, len,  in mcopy_atomic()
659 ssize_t mfill_zeropage(struct mm_struct *dst_mm, unsigned long start,  in mfill_zeropage()  argument
662 	return __mcopy_atomic(dst_mm, start, 0, len, MCOPY_ATOMIC_ZEROPAGE,  in mfill_zeropage()
666 ssize_t mcopy_continue(struct mm_struct *dst_mm, unsigned long start,  in mcopy_continue()  argument
669 	return __mcopy_atomic(dst_mm, start, 0, len, MCOPY_ATOMIC_CONTINUE,  in mcopy_continue()
673 int mwriteprotect_range(struct mm_struct *dst_mm, unsigned long start,  in mwriteprotect_range()  argument
690 	mmap_read_lock(dst_mm);  in mwriteprotect_range()
702 	dst_vma = find_dst_vma(dst_mm, start, len);  in mwriteprotect_range()
724 	mmap_read_unlock(dst_mm);  in mwriteprotect_range()