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Diffstat (limited to 'lib/PublicInbox/f3.h')
-rw-r--r--lib/PublicInbox/f3.h6
1 files changed, 4 insertions, 2 deletions
diff --git a/lib/PublicInbox/f3.h b/lib/PublicInbox/f3.h
index 4494e61b..4572f7f2 100644
--- a/lib/PublicInbox/f3.h
+++ b/lib/PublicInbox/f3.h
@@ -8,7 +8,9 @@
  */
 
 /* another project may use this: */
-#define F3_NS "lei"
+#ifndef F3_NS
+#error F3_NS not defined
+#endif
 
 #define _GNU_SOURCE
 #define _FILE_OFFSET_BITS 64
@@ -126,7 +128,7 @@ static struct f3_data f3 = {
 };
 
 static const struct fuse_opt f3_opt[] = {
-        /* *-fd and root-vid are internal knobs */
+        /* *-fd and root-vid are internal knobs used by perl mount wrapper */
         { "reader-fd=%d", offsetof(struct f3_data, rfd) },
         { "worker-fd=%d", offsetof(struct f3_data, wfd) },
         { "root-vid=%"PRId64, offsetof(struct f3_data, vroot.vid) },