D27409.diff
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	Index: head/sys/kern/vfs_aio.c
	===================================================================
	--- head/sys/kern/vfs_aio.c
	+++ head/sys/kern/vfs_aio.c
	@@ -2339,24 +2339,23 @@
	aio_biowakeup(struct bio *bp)
	{
	struct kaiocb job = (struct kaiocb )bp->bio_caller1;
	- struct proc *userp;
	struct kaioinfo *ki;
	size_t nbytes;
	int error, nblks;

	/* Release mapping into kernel space. */
	- userp = job->userproc;
	- ki = userp->p_aioinfo;
	- vm_page_unhold_pages(job->pages, job->npages);
	if (job->pbuf != NULL) {
	pmap_qremove((vm_offset_t)job->pbuf->b_data, job->npages);
	+ vm_page_unhold_pages(job->pages, job->npages);
	uma_zfree(pbuf_zone, job->pbuf);
	job->pbuf = NULL;
	atomic_subtract_int(&num_buf_aio, 1);
	+ ki = job->userproc->p_aioinfo;
	AIO_LOCK(ki);
	ki->kaio_buffer_count--;
	AIO_UNLOCK(ki);
	} else {
	+ vm_page_unhold_pages(job->pages, job->npages);
	free(job->pages, M_TEMP);
	atomic_subtract_int(&num_unmapped_aio, 1);
	}