diff --git a/man5/core.5 b/man5/core.5
index e71277dd7..17d0cce39 100644
--- a/man5/core.5
+++ b/man5/core.5
@@ -22,7 +22,7 @@
 .\" the source, must acknowledge the copyright and authors of this work.
 .\" %%%LICENSE_END
 .\"
-.TH CORE 5 2013-02-25 "Linux" "Linux Programmer's Manual"
+.TH CORE 5 2013-06-08 "Linux" "Linux Programmer's Manual"
 .SH NAME
 core \- core dump file
 .SH DESCRIPTION
@@ -300,7 +300,9 @@ The
 .I gcore
 command can be used to obtain a core dump of a running process.
 
-If a multithreaded process (or, more precisely, a process that
+In Linux versions up to and including 2.6.27,
+.\" Changed with commit 6409324b385f3f63a03645b4422e3be67348d922
+if a multithreaded process (or, more precisely, a process that
 shares its memory with another process by being created with the
 .B CLONE_VM
 flag of
@@ -309,7 +311,8 @@ dumps core, then the process ID is always appended to the core filename,
 unless the process ID was already included elsewhere in the
 filename via a %p specification in
 .IR /proc/sys/kernel/core_pattern .
-(This is primarily useful when employing the LinuxThreads implementation,
+(This is primarily useful when employing the obsolete
+LinuxThreads implementation,
 where each thread of a process has a different PID.)
 .\" Always including the PID in the name of the core file made
 .\" sense for LinuxThreads, where each thread had a unique PID,