2572 static int lock_page_maybe_drop_mmap(struct vm_fault *vmf, struct page *page,  in lock_page_maybe_drop_mmap()  argument
2583 	if (vmf->flags & FAULT_FLAG_RETRY_NOWAIT)  in lock_page_maybe_drop_mmap()
2586 	*fpin = maybe_unlock_mmap_for_io(vmf, *fpin);  in lock_page_maybe_drop_mmap()
2587 	if (vmf->flags & FAULT_FLAG_KILLABLE) {  in lock_page_maybe_drop_mmap()
2596 				mmap_read_unlock(vmf->vma->vm_mm);  in lock_page_maybe_drop_mmap()
2612 static struct file *do_sync_mmap_readahead(struct vm_fault *vmf)  in do_sync_mmap_readahead()  argument
2614 	struct file *file = vmf->vma->vm_file;  in do_sync_mmap_readahead()
2617 	DEFINE_READAHEAD(ractl, file, mapping, vmf->pgoff);  in do_sync_mmap_readahead()
2622 	if (vmf->vma->vm_flags & VM_RAND_READ)  in do_sync_mmap_readahead()
2627 	if (vmf->vma->vm_flags & VM_SEQ_READ) {  in do_sync_mmap_readahead()
2628 		fpin = maybe_unlock_mmap_for_io(vmf, fpin);  in do_sync_mmap_readahead()
2648 	fpin = maybe_unlock_mmap_for_io(vmf, fpin);  in do_sync_mmap_readahead()
2649 	ra->start = max_t(long, 0, vmf->pgoff - ra->ra_pages / 2);  in do_sync_mmap_readahead()
2662 static struct file *do_async_mmap_readahead(struct vm_fault *vmf,  in do_async_mmap_readahead()  argument
2665 	struct file *file = vmf->vma->vm_file;  in do_async_mmap_readahead()
2670 	pgoff_t offset = vmf->pgoff;  in do_async_mmap_readahead()
2673 	if (vmf->vma->vm_flags & VM_RAND_READ || !ra->ra_pages)  in do_async_mmap_readahead()
2679 		fpin = maybe_unlock_mmap_for_io(vmf, fpin);  in do_async_mmap_readahead()
2709 vm_fault_t filemap_fault(struct vm_fault *vmf)  in filemap_fault()  argument
2712 	struct file *file = vmf->vma->vm_file;  in filemap_fault()
2717 	pgoff_t offset = vmf->pgoff;  in filemap_fault()
2730 	if (likely(page) && !(vmf->flags & FAULT_FLAG_TRIED)) {  in filemap_fault()
2735 		fpin = do_async_mmap_readahead(vmf, page);  in filemap_fault()
2739 		count_memcg_event_mm(vmf->vma->vm_mm, PGMAJFAULT);  in filemap_fault()
2741 		fpin = do_sync_mmap_readahead(vmf);  in filemap_fault()
2745 					  vmf->gfp_mask);  in filemap_fault()
2753 	if (!lock_page_maybe_drop_mmap(vmf, page, &fpin))  in filemap_fault()
2792 	vmf->page = page;  in filemap_fault()
2803 	fpin = maybe_unlock_mmap_for_io(vmf, fpin);  in filemap_fault()
2834 void filemap_map_pages(struct vm_fault *vmf,  in filemap_map_pages()  argument
2837 	struct file *file = vmf->vma->vm_file;  in filemap_map_pages()
2883 		vmf->address += (xas.xa_index - last_pgoff) << PAGE_SHIFT;  in filemap_map_pages()
2884 		if (vmf->pte)  in filemap_map_pages()
2885 			vmf->pte += xas.xa_index - last_pgoff;  in filemap_map_pages()
2887 		if (alloc_set_pte(vmf, page))  in filemap_map_pages()
2897 		if (pmd_trans_huge(*vmf->pmd))  in filemap_map_pages()
2905 vm_fault_t filemap_page_mkwrite(struct vm_fault *vmf)  in filemap_page_mkwrite()  argument
2907 	struct page *page = vmf->page;  in filemap_page_mkwrite()
2908 	struct inode *inode = file_inode(vmf->vma->vm_file);  in filemap_page_mkwrite()
2912 	file_update_time(vmf->vma->vm_file);  in filemap_page_mkwrite()
2960 vm_fault_t filemap_page_mkwrite(struct vm_fault *vmf)  in filemap_page_mkwrite()  argument