diff --git a/man2/swapon.2 b/man2/swapon.2
index 63d1c9bb0..656139c6f 100644
--- a/man2/swapon.2
+++ b/man2/swapon.2
@@ -34,7 +34,7 @@
 .\" 2007-06-22 Ivana Varekova <varekova@redhat.com>, mtk
 .\"     Update text describing limit on number of swap files.
 .\"
-.TH SWAPON 2 2007-06-22 "Linux" "Linux Programmer's Manual"
+.TH SWAPON 2 2010-06-15 "Linux" "Linux Programmer's Manual"
 .SH NAME
 swapon, swapoff \- start/stop swapping to file/device
 .SH SYNOPSIS
@@ -165,6 +165,10 @@ option
 .BR mbind (2)
 and
 .BR migrate_pages (2)).
+Since kernel 2.6.32, the limit is further decreased by 1
+if the kernel is built with the
+.B CONFIG_MEMORY_FAILURE
+option.
 .SH "SEE ALSO"
 .BR mkswap (8),
 .BR swapoff (8),