From: Chris Mason <chris.mason@oracle.com>
Date: Fri, 16 May 2008 17:14:57 +0000 (-0400)
Subject: Btrfs: Handle transid == 0 while opening devices
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=6af5ac3c1aede574acde5fc477f1a1c876fb568e;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

Btrfs: Handle transid == 0 while opening devices

Signed-off-by: Chris Mason <chris.mason@oracle.com>
---

diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 501d23d3ebfd..3fbf0834e884 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -262,7 +262,7 @@ int btrfs_open_devices(struct btrfs_fs_devices *fs_devices,
 			goto error_brelse;
 
 		transid = btrfs_super_generation(disk_super);
-		if (transid > latest_transid) {
+		if (!latest_transid || transid > latest_transid) {
 			latest_devid = devid;
 			latest_transid = transid;
 			latest_bdev = bdev;