[PATCH v3 0/4] btrfs: dev-replace: replace_task related cleanup

[Qu Wenruo <wqu@suse.com>]

[CHANGELOG]
v3:
- More cleanup patches for dev-replace
  Most newer ones are minor, e.g. changing the message and its timing.
  But the error handling inside btrfs_dev_replace_finishing() is
  important for later replace_task cleanup.

- Directly modify replace_task when the replace is suspended
  We do not need any extra lock, since the only reader is accessing
  replace_task without lock anyway.

We have 4 errors paths that do not properly reset replace_task to NULL
after the replace is cancelled/finished/suspended.

This is reported by Sashiko.

And since we're here, also do extra cleanup related to dev-replace error
message and its timing.

Qu Wenruo (4):
  btrfs: dev-replace: fix the incorrect error message
  btrfs: dev-replace: concentrate all messages into
    btrfs_dev_replace_finishing()
  btrfs: dev-replace: fix the error handling in
    btrfs_dev_replace_finishing()
  btrfs: dev-replace: properly cleanup replace_task

 fs/btrfs/dev-replace.c | 79 +++++++++++++++++++++++-------------------
 1 file changed, 44 insertions(+), 35 deletions(-)

-- 
2.55.0