question about applying patch to kernel 2.6.26

[a dehqan <dehqan65@gmail.com>]

In The Name Of God

I'll be thankfull if you guide ;
this patch code<http://article.gmane.org/gmane.linux.drivers.hdaps.devel/1324/raw>has
been saved as 2.patch  in /usr/src/linux-headers-2.6.26-1-686 directory.
and with this command applied to kernel : patch -p2 -l < 2.patch

debian:~# patch -p2 -l < 2.patch
can't find file to patch at input line 4
Perhaps you used the wrong -p or --strip option?
The text leading up to this was:
--------------------------
|diff -urN linux-2.6.18.3.original/block/ll_rw_blk.c
linux-2.6.18.3.hdaps/block/ll_rw_blk.c
|--- linux-2.6.18.3.original/block/ll_rw_blk.c    2006-11-19
03:28:22.000000000 +0000
|+++ linux-2.6.18.3.hdaps/block/ll_rw_blk.c    2006-11-26 11:29:55.000000000
+0000
--------------------------
File to patch:

after that it asked this > "File to patch:"
what should be answered to this question ?

regards dehqan