[PATCH 0/6 v3] btrfs/219 cloned-device mount capability update

[Anand Jain <anand.jain@oracle.com>]

v3:
Split changes into smaller discrete patches.
Add a helper function to check if the temp-fsid is supported.
Check for the second failure only when the temp-fsid is not supported.

v2:
Patch 1/2 has been added, which performs the cleanup of the local
variables and the _clean_up() function. Patch 2/2 in v2 restores
the code where it tests clone-device that it does not mount if the
temp-fsid feature is not present in the kernel.

Fixes btrfs/219 bug when temp-fsid is supported in the kernel.

Anand Jain (6):
  common/rc: _fs_sysfs_dname fetch fsid using btrfs tool
  common/rc: _destroy_loop_device confirm arg1 is set
  common/btrfs: add helper _has_btrfs_sysfs_feature_attr
  btrfs/219: fix _cleanup() to successful release the loop-device
  btrfs/219: cloned-device mount capability update
  btrfs/219: add to the auto group

 common/btrfs    | 12 ++++++++
 common/rc       | 10 +++++--
 tests/btrfs/219 | 74 ++++++++++++++++++++++++++++---------------------
 3 files changed, 63 insertions(+), 33 deletions(-)

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2.39.3