--- linux/mm/highmem.c.IDDEV	Tue Apr  9 14:55:43 2002
+++ linux/mm/highmem.c	Tue Apr  9 15:28:12 2002
@@ -347,6 +347,8 @@
 	return __bounce_end_io_read(bio, isa_page_pool);
 }
 
+static int bmsg_count;		/* for printk rate throttling */
+
 void create_bounce(unsigned long pfn, int gfp, struct bio **bio_orig)
 {
 	struct page *page;
@@ -449,6 +451,12 @@
 
 	bio->bi_private = *bio_orig;
 	*bio_orig = bio;
+
+	bmsg_count++;
+	if ((bmsg_count % 10000) == 1)
+		printk(KERN_INFO "bounce_io (%c) for %d:%d\n",
+			(rw & WRITE) ? 'W' : 'R',
+			major(bio->bi_dev), minor(bio->bi_dev));
 }
 
 #if CONFIG_DEBUG_HIGHMEM