David Sterba 89ec75229a btrfs: call mnt_drop_write after interrupted subvol deletion ...

commit e43f998e47 upstream.

If btrfs_ioctl_snap_destroy blocks on the mutex and the process is
killed, mnt_write count is unbalanced and leads to unmountable
filesystem.

Signed-off-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Chris Mason <clm@fb.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2013-12-20 07:45:10 -08:00

98 KiB

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