FAILED: Patch "btrfs: fix use-after-free of block device file in __btrfs_free_extra_devids()" failed to apply to v4.19-stable tree

[Sasha Levin]

The patch below does not apply to the v4.19-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable@xxxxxxxxxxxxxxx>.

Thanks,
Sasha

------------------ original commit in Linus's tree ------------------