Commit e2bf6e89 authored Jun 23, 2016 by Anand Jain Committed by David Sterba Jul 26, 2016

btrfs: make sure device is synced before return



An inconsistent behavior due to stale reads from the
disk was reported

  mail-archive.com/linux-btrfs@vger.kernel.org/msg54188.html

This patch will make sure devices are synced before
return in the unmount thread.

Signed-off-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.com>

parent f448341a

fs/btrfs/volumes.c

+5 −0

Original line number	Diff line number	Diff line
		@@ -870,6 +870,11 @@ static void btrfs_close_one_device(struct btrfs_device *device)
		if (device->missing)
		fs_devices->missing_devices--;

		if (device->bdev && device->writeable) {
		sync_blockdev(device->bdev);
		invalidate_bdev(device->bdev);
		}

		new_device = btrfs_alloc_device(NULL, &device->devid,
		device->uuid);
		BUG_ON(IS_ERR(new_device)); /* -ENOMEM */