i am putting a printk() on link_path_walk() kernel function ( the pathname
resolution function). i access that printk() only at some special condition
(like if pathname passed to link_path_walk() matches with some name) . but
when it gets hit? like when i pass pathname via unlink(2) , lots of messages
are written to dmesg ( or /var/log/messages) . i could not understand why
these lots of messages are being written? ? (i was hoping for only one
message)

Try to printout the name of the process on behalf of which the kernel
runs link_path_walk
using current->comm.

Then filter out the printks done by your application.

thanks,
Daniel.