From 2d7cd4e947570fb600dd6255cdb455a5d25d57c6 Mon Sep 17 00:00:00 2001
From: mckusick <mckusick@FreeBSD.org>
Date: Tue, 7 Aug 2018 21:17:45 +0000
Subject: [PATCH] When getting mount information for all filesystems, mount
 uses the getfsstat(2) system call using the MNT_NOWAIT flag to indicate that
 it wants to use the statfs information cached in the mount structure. When
 the -v (verbose) flag is specified, we need to use the MNT_WAIT flag to
 getfsstat(2) so that kernel will call VFS_STATFS to get the current statfs
 statistics from each filesystem.

Sponsored by:	Netflix
---
 sbin/mount/mount.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/sbin/mount/mount.c b/sbin/mount/mount.c
index 6a59c736088e..a44a6fe8571f 100644
--- a/sbin/mount/mount.c
+++ b/sbin/mount/mount.c
@@ -329,7 +329,8 @@ main(int argc, char *argv[])
 	rval = 0;
 	switch (argc) {
 	case 0:
-		if ((mntsize = getmntinfo(&mntbuf, MNT_NOWAIT)) == 0)
+		if ((mntsize = getmntinfo(&mntbuf,
+		     verbose ? MNT_WAIT : MNT_NOWAIT)) == 0)
 			err(1, "getmntinfo");
 		if (all) {
 			while ((fs = getfsent()) != NULL) {