You can open the file whose name is under the cursor with gf, (goto file).
Recently, while browsing the linux source code, I wanted to do a gf on a file whose name appeared inside an include statement. For instance, if the line was:
I wanted to open the can.h file by having the cursor on that line and hitting gf, but unfortunately it would just tell me:
E447: Can’t find file “linux/can.h” in path
From :help editing.txt
If Vim's current path is /u/user_x/work/release and you do :set path=include;/u/user_x and then search for a file with |gf| the file is searched in: /u/user_x/work/release/include /u/user_x/work/include /u/user_x/include
So if you got your linux source in /path/to/linux/ you would do:
Now if you hit gf again vim will correctly open the file /path/to/linux/include/linux/can.h