387 static noinline int btrfs_copy_from_user(loff_t pos, size_t write_bytes,  in btrfs_copy_from_user()  argument
396 	while (write_bytes > 0) {  in btrfs_copy_from_user()
398 				     PAGE_SIZE - offset, write_bytes);  in btrfs_copy_from_user()
426 		write_bytes -= copied;  in btrfs_copy_from_user()
464 		      size_t num_pages, loff_t pos, size_t write_bytes,  in btrfs_dirty_pages()  argument
473 	u64 end_pos = pos + write_bytes;  in btrfs_dirty_pages()
477 	if (write_bytes == 0)  in btrfs_dirty_pages()
484 	num_bytes = round_up(write_bytes + pos - start_pos,  in btrfs_dirty_pages()
1367 				  size_t write_bytes, bool force_uptodate)  in prepare_pages()  argument
1396 						    pos + write_bytes, false);  in prepare_pages()
1433 				size_t write_bytes,  in lock_and_cleanup_extent_if_need()  argument
1444 	last_pos = round_up(pos + write_bytes, fs_info->sectorsize) - 1;  in lock_and_cleanup_extent_if_need()
1485 			   size_t *write_bytes, bool nowait)  in check_can_nocow()  argument
1500 	lockend = round_up(pos + *write_bytes,  in check_can_nocow()
1529 		*write_bytes = min_t(size_t, *write_bytes ,  in check_can_nocow()
1539 			      size_t *write_bytes)  in check_nocow_nolock()  argument
1541 	return check_can_nocow(inode, pos, write_bytes, true);  in check_nocow_nolock()
1564 			   size_t *write_bytes)  in btrfs_check_nocow_lock()  argument
1566 	return check_can_nocow(inode, pos, write_bytes, false);  in btrfs_check_nocow_lock()
1697 		size_t write_bytes = min(iov_iter_count(i),  in btrfs_buffered_write()  local
1712 		if (unlikely(iov_iter_fault_in_readable(i, write_bytes))) {  in btrfs_buffered_write()
1723 						  write_bytes);  in btrfs_buffered_write()
1731 						   &write_bytes) > 0)  in btrfs_buffered_write()
1737 		num_pages = DIV_ROUND_UP(write_bytes + offset, PAGE_SIZE);  in btrfs_buffered_write()
1739 		reserve_bytes = round_up(write_bytes + sector_offset,  in btrfs_buffered_write()
1748 						write_bytes);  in btrfs_buffered_write()
1762 				    pos, write_bytes,  in btrfs_buffered_write()
1772 				num_pages, pos, write_bytes, &lockstart,  in btrfs_buffered_write()
1783 		copied = btrfs_copy_from_user(pos, write_bytes, pages, i);  in btrfs_buffered_write()
1794 		if (copied < write_bytes)  in btrfs_buffered_write()