409 static noinline int btrfs_copy_from_user(loff_t pos, int num_pages,  in btrfs_copy_from_user()  argument
464 static void btrfs_drop_pages(struct page **pages, size_t num_pages)  in btrfs_drop_pages()  argument
467 	for (i = 0; i < num_pages; i++) {  in btrfs_drop_pages()
489 			     struct page **pages, size_t num_pages,  in btrfs_dirty_pages()  argument
510 	for (i = 0; i < num_pages; i++) {  in btrfs_dirty_pages()
1317 				  size_t num_pages, loff_t pos,  in prepare_pages()  argument
1326 	for (i = 0; i < num_pages; i++) {  in prepare_pages()
1338 		if (i == num_pages - 1)  in prepare_pages()
1372 				size_t num_pages, loff_t pos,  in lock_and_cleanup_extent_if_need()  argument
1382 	last_pos = start_pos + ((u64)num_pages << PAGE_CACHE_SHIFT) - 1;  in lock_and_cleanup_extent_if_need()
1396 			for (i = 0; i < num_pages; i++) {  in lock_and_cleanup_extent_if_need()
1416 	for (i = 0; i < num_pages; i++) {  in lock_and_cleanup_extent_if_need()
1503 		size_t num_pages = DIV_ROUND_UP(write_bytes + offset,  in __btrfs_buffered_write()  local
1509 		WARN_ON(num_pages > nrptrs);  in __btrfs_buffered_write()
1520 		reserve_bytes = num_pages << PAGE_CACHE_SHIFT;  in __btrfs_buffered_write()
1532 				num_pages = DIV_ROUND_UP(write_bytes + offset,  in __btrfs_buffered_write()
1534 				reserve_bytes = num_pages << PAGE_CACHE_SHIFT;  in __btrfs_buffered_write()
1562 		ret = prepare_pages(inode, pages, num_pages,  in __btrfs_buffered_write()
1568 		ret = lock_and_cleanup_extent_if_need(inode, pages, num_pages,  in __btrfs_buffered_write()
1580 		copied = btrfs_copy_from_user(pos, num_pages,  in __btrfs_buffered_write()
1606 		if (num_pages > dirty_pages) {  in __btrfs_buffered_write()
1607 			release_bytes = (num_pages - dirty_pages) <<  in __btrfs_buffered_write()
1633 			btrfs_drop_pages(pages, num_pages);  in __btrfs_buffered_write()
1652 		btrfs_drop_pages(pages, num_pages);  in __btrfs_buffered_write()