[OSSTEST PATCH 11/12] target setup refactoring: Add a doc comment

[Ian Jackson <ian.jackson@xxxxxxxxxxxxx>]

Signed-off-by: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>
---
 Osstest/TestSupport.pm | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Osstest/TestSupport.pm b/Osstest/TestSupport.pm
index fd7b238b..d9bb2585 100644
--- a/Osstest/TestSupport.pm
+++ b/Osstest/TestSupport.pm
@@ -2563,6 +2563,9 @@ sub target_var ($$) {
 }
 
 sub target_setup_rootdev_console_inittab ($$$) {
+    # Operators on $gho.
+    # $gho's filesystem is accessed via $ho and $mountpoint;
+    # so maybe $gho is $ho and $mountpoint is "/".
     my ($ho, $gho, $root) = @_;
 
     my $pfx= target_var_prefix($gho);
-- 
2.20.1