[PATCH AUTOSEL for 4.9 240/293] btrfs: fail mount when sb flag is not in BTRFS_SUPER_FLAG_SUPP

From: Anand Jain [ Upstream commit 6f794e3c5c8f8fdd3b5bb20d9ded894e685b5bbe ] It appears from the original commit [1] that there isn't any design specific reason not to fail the mount instead of just warning. This patch will change it to fail. [1] commit

[PATCH AUTOSEL for 4.9 240/293] btrfs: fail mount when sb flag is not in BTRFS_SUPER_FLAG_SUPP

From: Anand Jain [ Upstream commit 6f794e3c5c8f8fdd3b5bb20d9ded894e685b5bbe ] It appears from the original commit [1] that there isn't any design specific reason not to fail the mount instead of just warning. This patch will change it to fail. [1] commit