commit 1961ee822320bdc107e55f10b2db1bfe8f70d382
from: Russ Cox <russcox@gmail.com>
date: Fri Sep 25 01:21:27 2009 UTC

lib9: do not include st_dev in qid.path

http://codereview.appspot.com/123050

commit - cfa81d56c6727c3adcaa160c202c914696097c58
commit + 1961ee822320bdc107e55f10b2db1bfe8f70d382
blob - afda0c520b1a2eb2b4bcbb46a2fd91fd44eb65ee
blob + 1fc5b049cae1c2886dba5dcd6b8499131a5b3379
--- src/lib9/_p9dir.c
+++ src/lib9/_p9dir.c
@@ -189,7 +189,14 @@ _p9dir(struct stat *lst, struct stat *st, char *name, 
 		d->type = 'M';
 
 		d->muid = "";
-		d->qid.path = ((uvlong)st->st_dev<<32) | st->st_ino;
+		d->qid.path = st->st_ino;
+		/*
+		 * do not include st->st_dev in path, because
+		 * automounters give the same file system different
+		 * st_dev values for successive mounts, causing
+		 * spurious write warnings in acme and sam.
+		d->qid.path |= (uvlong)st->st_dev<<32;
+		 */
 #ifdef _HAVESTGEN
 		d->qid.vers = st->st_gen;
 #endif