2343 static int lock_page_maybe_drop_mmap(struct vm_fault *vmf, struct page *page,  in lock_page_maybe_drop_mmap()  argument
2354 	if (vmf->flags & FAULT_FLAG_RETRY_NOWAIT)  in lock_page_maybe_drop_mmap()
2357 	*fpin = maybe_unlock_mmap_for_io(vmf, *fpin);  in lock_page_maybe_drop_mmap()
2358 	if (vmf->flags & FAULT_FLAG_KILLABLE) {  in lock_page_maybe_drop_mmap()
2367 				up_read(&vmf->vma->vm_mm->mmap_sem);  in lock_page_maybe_drop_mmap()
2383 static struct file *do_sync_mmap_readahead(struct vm_fault *vmf)  in do_sync_mmap_readahead()  argument
2385 	struct file *file = vmf->vma->vm_file;  in do_sync_mmap_readahead()
2389 	pgoff_t offset = vmf->pgoff;  in do_sync_mmap_readahead()
2392 	if (vmf->vma->vm_flags & VM_RAND_READ)  in do_sync_mmap_readahead()
2397 	if (vmf->vma->vm_flags & VM_SEQ_READ) {  in do_sync_mmap_readahead()
2398 		fpin = maybe_unlock_mmap_for_io(vmf, fpin);  in do_sync_mmap_readahead()
2418 	fpin = maybe_unlock_mmap_for_io(vmf, fpin);  in do_sync_mmap_readahead()
2431 static struct file *do_async_mmap_readahead(struct vm_fault *vmf,  in do_async_mmap_readahead()  argument
2434 	struct file *file = vmf->vma->vm_file;  in do_async_mmap_readahead()
2438 	pgoff_t offset = vmf->pgoff;  in do_async_mmap_readahead()
2441 	if (vmf->vma->vm_flags & VM_RAND_READ)  in do_async_mmap_readahead()
2446 		fpin = maybe_unlock_mmap_for_io(vmf, fpin);  in do_async_mmap_readahead()
2476 vm_fault_t filemap_fault(struct vm_fault *vmf)  in filemap_fault()  argument
2479 	struct file *file = vmf->vma->vm_file;  in filemap_fault()
2484 	pgoff_t offset = vmf->pgoff;  in filemap_fault()
2497 	if (likely(page) && !(vmf->flags & FAULT_FLAG_TRIED)) {  in filemap_fault()
2502 		fpin = do_async_mmap_readahead(vmf, page);  in filemap_fault()
2506 		count_memcg_event_mm(vmf->vma->vm_mm, PGMAJFAULT);  in filemap_fault()
2508 		fpin = do_sync_mmap_readahead(vmf);  in filemap_fault()
2512 					  vmf->gfp_mask);  in filemap_fault()
2520 	if (!lock_page_maybe_drop_mmap(vmf, page, &fpin))  in filemap_fault()
2559 	vmf->page = page;  in filemap_fault()
2570 	fpin = maybe_unlock_mmap_for_io(vmf, fpin);  in filemap_fault()
2602 void filemap_map_pages(struct vm_fault *vmf,  in filemap_map_pages()  argument
2605 	struct file *file = vmf->vma->vm_file;  in filemap_map_pages()
2650 		vmf->address += (xas.xa_index - last_pgoff) << PAGE_SHIFT;  in filemap_map_pages()
2651 		if (vmf->pte)  in filemap_map_pages()
2652 			vmf->pte += xas.xa_index - last_pgoff;  in filemap_map_pages()
2654 		if (alloc_set_pte(vmf, NULL, page))  in filemap_map_pages()
2664 		if (pmd_trans_huge(*vmf->pmd))  in filemap_map_pages()
2671 vm_fault_t filemap_page_mkwrite(struct vm_fault *vmf)  in filemap_page_mkwrite()  argument
2673 	struct page *page = vmf->page;  in filemap_page_mkwrite()
2674 	struct inode *inode = file_inode(vmf->vma->vm_file);  in filemap_page_mkwrite()
2678 	file_update_time(vmf->vma->vm_file);  in filemap_page_mkwrite()
2726 vm_fault_t filemap_page_mkwrite(struct vm_fault *vmf)  in filemap_page_mkwrite()  argument