I'm trying to implement wiping of freed swap pages inside swap_pager. I'm using 2.2-branch, here is my thoughts and steps:
I have a (starting) block number of swapped page, i know page size, and i know that i have to use some pool of buffers inside kernel. So i get buffer with getpbuf(), then fill in b_data, b_blkno, b_bcount, b_bufsize, b_proc and b_flags fields and call pbgetvp(swapdev_vp,bp) and VOP_STRATEGY(bp). Then i analize error flag in b_flags and call pbrelvp(bp) and relpbuf(bp). This code was copied from getpages/putpages routines, but it hangs kernel and PC. So i misunderstand something and need help. How can i successfully write down some data to the known block number on the known device from the kernel? Or maybe someone can point me where can i find more information on I/O in kernel? Thank you. PS. I've read -current manpages, but they didn't help me much. :( To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
