[PATCH 4.9 33/87] btrfs: fix crash when trying to resume balance without the resume flag

4.9-stable review patch. If anyone has any objections, please let me know. -- From: Anand Jain commit 02ee654d3a04563c67bfe658a05384548b9bb105 upstream. We set the BTRFS_BALANCE_RESUME flag in the btrfs_recover_balance() only, which isn't called during

[PATCH 4.9 33/87] btrfs: fix crash when trying to resume balance without the resume flag

4.9-stable review patch. If anyone has any objections, please let me know. -- From: Anand Jain commit 02ee654d3a04563c67bfe658a05384548b9bb105 upstream. We set the BTRFS_BALANCE_RESUME flag in the btrfs_recover_balance() only, which isn't called during the remount. So when