pivot_root.2: Introduce mount namespaces in the very first sentence

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

diff --git a/man2/pivot_root.2 b/man2/pivot_root.2
index d7ca80d4af5375920eafb95cdb03bb734e3f63f7..46c44688c511618fc6ea3aabc85ed42cb2a82220 100644 (file)
--- a/man2/pivot_root.2
+++ b/man2/pivot_root.2
@@ -17,9 +17,9 @@ pivot_root \- change the root filesystem
 There is no glibc wrapper for this system call; see NOTES.
 .SH DESCRIPTION
 .BR pivot_root ()
-moves the root filesystem of the calling process to the
-directory \fIput_old\fP and makes \fInew_root\fP the new root filesystem
-of the calling process.
+changes the root filesystem in the mount namespace of the calling process.
+More precisely, it moves the root filesystem to the
+directory \fIput_old\fP and makes \fInew_root\fP the new root filesystem.
 The calling process must have the
 .B CAP_SYS_ADMIN
 capability in the user namespace that owns the caller's mount namespace.