[PATCH COMMITTED 2/6] linux ttyname: Update a reference to kernel docs for kernel 4.10

[Christian Brauner <christian.brauner@ubuntu.com>]

From: Luke Shumaker <lukeshu@parabola.nu>

Linux 4.10 moved many of the documentation files around.

4.10 came out between the time the patch adding the comment (commit
15e9a4f378c8607c2ae1aa465436af4321db0e23) was submitted and the time
it was applied (in February, January, and March 2017; respectively).

Reviewed-by: Christian Brauner <christian.brauner@ubuntu.com>
---
 ChangeLog                         | 2 ++
 sysdeps/unix/sysv/linux/ttyname.h | 3 ++-
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/ChangeLog b/ChangeLog
index 7916ad639f..6194237230 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,7 @@
 2017-11-15  Luke Shumaker  <lukeshu@parabola.nu>
 
+	* sysdeps/unix/sysv/linux/ttyname.h (is_pty): Update doc reference.
+
 	* manual/terminal.texi (Is It a Terminal):
 	Mention ENODEV for ttyname and ttyname_r.
 
diff --git a/sysdeps/unix/sysv/linux/ttyname.h b/sysdeps/unix/sysv/linux/ttyname.h
index 2e415e4e9c..cbcdbab607 100644
--- a/sysdeps/unix/sysv/linux/ttyname.h
+++ b/sysdeps/unix/sysv/linux/ttyname.h
@@ -21,7 +21,8 @@
 #include <sys/stat.h>
 
 /* Return true if this is a UNIX98 pty device, as defined in
-   linux/Documentation/devices.txt.  */
+   linux/Documentation/devices.txt (on linux < 4.10) or
+   linux/Documentation/admin-guide/devices.txt (on linux >= 4.10).  */
 static inline int
 is_pty (struct stat64 *sb)
 {
-- 
2.14.1