[PATCH 0/4] Misc cleanups around device addition

[Nikolay Borisov <nborisov@suse.com>]

Here are 4 minor cleanups around btrfs_init_new_device. First one converts
a readonly usage of device_lists to using RCU. Second patch slightly simplifies
the logic around locking when seed device is used. Third one removes a leftover
from rewrite of btrfs_free_stale_devices. And the final one replaces an
opencoded filemap_write_and_wait on the bdev inode with the more consistent
sync_blockdev.

All these have passed xfstest and don't constitute functional changes.

Nikolay Borisov (4):
  btrfs: Use rcu when iterating devices in btrfs_init_new_device
  btrfs: Refactor locked condition in btrfs_init_new_device
  btrfs: Remove redundant code from btrfs_free_stale_devices
  btrfs: Don't opencode sync_blockdev

 fs/btrfs/volumes.c | 20 +++++++++-----------
 1 file changed, 9 insertions(+), 11 deletions(-)

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2.17.1