btrfs-progs: close all fs_devices before exit in some commands

mkfs creates more than one fs_devices in fs_uuids.
1: one is for file system being created
2: others are created in test_dev_for_mkfs in order to check mount point
   test_dev_for_mkfs()-> ... -> btrfs_scan_one_device()

Current code only closes 1, and this patch also closes in case 2.

Similar problem exist in other tools, eg.::

 cmd-check.c: the function is:
 cmd_check()->check_mounted()-> ... -> btrfs_scan_one_device()
 ...

Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/cmds-device.c b/cmds-device.c
index cbb6b61d..8e69b885 100644
--- a/cmds-device.c
+++ b/cmds-device.c
@@ -28,6 +28,7 @@
 #include "ctree.h"
 #include "ioctl.h"
 #include "utils.h"
+#include "volumes.h"
 #include "cmds-fi-usage.h"
 
 #include "commands.h"
@@ -140,6 +141,7 @@ static int cmd_device_add(int argc, char **argv)
 
 error_out:
 	close_file_or_dir(fdmnt, dirstream);
+	btrfs_close_all_devices();
 	return !!ret;
 }
 
@@ -290,6 +292,7 @@ static int cmd_device_scan(int argc, char **argv)
 	}
 
 out:
+	btrfs_close_all_devices();
 	return !!ret;
 }
 
@@ -467,6 +470,7 @@ static int cmd_device_stats(int argc, char **argv)
 out:
 	free(di_args);
 	close_file_or_dir(fdmnt, dirstream);
+	btrfs_close_all_devices();
 
 	return err;
 }