patch-2.1.129 linux/mm/page_io.c

• Lines: 12
• Date: Tue Nov 17 17:36:53 1998
• Orig file: v2.1.128/linux/mm/page_io.c
• Orig date: Wed Sep 9 14:51:13 1998

diff -u --recursive --new-file v2.1.128/linux/mm/page_io.c linux/mm/page_io.c
@@ -66,6 +66,11 @@
 		printk("Internal error: bad swap-device\n");
 		return;
 	}
+
+	/* Don't allow too many pending pages in flight.. */
+	if (atomic_read(&nr_async_pages) > SWAP_CLUSTER_MAX)
+		wait = 1;
+
 	p = &swap_info[type];
 	offset = SWP_OFFSET(entry);
 	if (offset >= p->max) {