20 static int mcopy_atomic_pte(struct mm_struct *dst_mm,  in mcopy_atomic_pte()  argument
66 	if (mem_cgroup_try_charge(page, dst_mm, GFP_KERNEL, &memcg, false))  in mcopy_atomic_pte()
74 	dst_pte = pte_offset_map_lock(dst_mm, dst_pmd, dst_addr, &ptl);  in mcopy_atomic_pte()
78 	inc_mm_counter(dst_mm, MM_ANONPAGES);  in mcopy_atomic_pte()
83 	set_pte_at(dst_mm, dst_addr, dst_pte, _dst_pte);  in mcopy_atomic_pte()
100 static int mfill_zeropage_pte(struct mm_struct *dst_mm,  in mfill_zeropage_pte()  argument
112 	dst_pte = pte_offset_map_lock(dst_mm, dst_pmd, dst_addr, &ptl);  in mfill_zeropage_pte()
115 	set_pte_at(dst_mm, dst_addr, dst_pte, _dst_pte);  in mfill_zeropage_pte()
142 static __always_inline ssize_t __mcopy_atomic(struct mm_struct *dst_mm,  in __mcopy_atomic()  argument
170 	down_read(&dst_mm->mmap_sem);  in __mcopy_atomic()
177 	dst_vma = find_vma(dst_mm, dst_start);  in __mcopy_atomic()
217 		dst_pmd = mm_alloc_pmd(dst_mm, dst_addr);  in __mcopy_atomic()
233 		    unlikely(__pte_alloc(dst_mm, dst_pmd, dst_addr))) {  in __mcopy_atomic()
247 			err = mcopy_atomic_pte(dst_mm, dst_pmd, dst_vma,  in __mcopy_atomic()
250 			err = mfill_zeropage_pte(dst_mm, dst_pmd, dst_vma,  in __mcopy_atomic()
258 			up_read(&dst_mm->mmap_sem);  in __mcopy_atomic()
287 	up_read(&dst_mm->mmap_sem);  in __mcopy_atomic()
297 ssize_t mcopy_atomic(struct mm_struct *dst_mm, unsigned long dst_start,  in mcopy_atomic()  argument
300 	return __mcopy_atomic(dst_mm, dst_start, src_start, len, false);  in mcopy_atomic()
303 ssize_t mfill_zeropage(struct mm_struct *dst_mm, unsigned long start,  in mfill_zeropage()  argument
306 	return __mcopy_atomic(dst_mm, start, 0, len, true);  in mfill_zeropage()