[PATCH 0/3] btrfs: fix a couple of hangs during unmount caused by races

[fdmanana@kernel.org]

From: Filipe Manana <fdmanana@suse.com>

Due to some races or bad timmings, we can hang during unmount when trying
to stop the block group reclaim task or one of the space reclaim tasks.
The second case if often triggered by generic/562 for a while, but the
underlying problem has been there for a long time, despite seeming to be
more frequent recently. More details in the changelogs.

Filipe Manana (3):
  btrfs: fix hang during unmount when stopping block group reclaim worker
  btrfs: fix hang during unmount when stopping a space reclaim worker
  btrfs: remove useless used space increment during space reservation

 fs/btrfs/disk-io.c    | 42 ++++++++++++++++++++++++++++++++++++------
 fs/btrfs/space-info.c |  1 -
 2 files changed, 36 insertions(+), 7 deletions(-)

-- 
2.35.1