Re: [PATCH v3 0/4] btrf_show_devname related fixes

Please consider patches 1/4 and 3/4 as RFC.
The reason for the RFC is in the individual patches.

Thanks.

On 20/08/2021 19:28, Anand Jain wrote:

These fixes are inspired by the bug report and its discussions in the
mailing list subject
  btrfs: traverse seed devices if fs_devices::devices is empty in show_devname

v3:
  Fix rcu_lock in the patch 3/4

Anand Jain (4):
   btrfs: consolidate device_list_mutex in prepare_sprout to its parent
   btrfs: save latest btrfs_device instead of its block_device in
     fs_devices
   btrfs: use latest_dev in btrfs_show_devname
   btrfs: update latest_dev when we sprout

  fs/btrfs/disk-io.c   |  6 +++---
  fs/btrfs/extent_io.c |  2 +-
  fs/btrfs/inode.c     |  2 +-
  fs/btrfs/procfs.c    |  6 +++---
  fs/btrfs/super.c     | 26 ++++----------------------
  fs/btrfs/volumes.c   | 19 +++++++++++--------
  fs/btrfs/volumes.h   |  2 +-
  7 files changed, 24 insertions(+), 39 deletions(-)