runtime: fix another out of date comment in GC
gcDrain used to be passed a *workbuf to start draining from, but now
it takes a gcWork, which hides whether or not there's an initial
workbuf. Update the comment to match this.
Change-Id: I976b58e5bfebc451cfd4fa75e770113067b5cc07
Reviewed-on: https://go-review.googlesource.com/8246
Reviewed-by: Rick Hudson <rlh@golang.org>
diff --git a/src/runtime/mgcmark.go b/src/runtime/mgcmark.go
index 8e0a88f..f6452ea 100644
--- a/src/runtime/mgcmark.go
+++ b/src/runtime/mgcmark.go
@@ -335,7 +335,7 @@
}
}
-// gcDrain scans objects in work buffers (starting with wbuf), blackening grey
+// gcDrain scans objects in work buffers, blackening grey
// objects until all work buffers have been drained.
//go:nowritebarrier
func gcDrain(gcw *gcWork) {
