[PATCH v2 0/4] zbd: fix unexpected random write stop

When a random write target offset points to a zone that is not writable,
zbd_convert_to_write_zone() attempts to convert the write offset to a
different, writable zone. However, the conversion fails under a specific
set of conditions. This series addresses the failure. The first two
patches prepare for the fix. The third patch fixes the failure. The
fourth patch adds a test case to confirm the fix.

Changes from v1:
* 1st, 2nd: Improved function comments per review comments on the list
* 1st-3rd: Added Reviewed-by tags

Shin'ichiro Kawasaki (4):
  zbd: move zone finish operation to zbd_convert_to_write_zone()
  zbd: factor out zbd_pick_write_zone()
  zbd: finish zone when all random write target zones have small
    remainder
  t/zbd: add test for the case all write zones have small remainder

 t/zbd/test-zbd-support |  48 +++++++++++
 zbd.c                  | 191 ++++++++++++++++++++++++-----------------
 2 files changed, 162 insertions(+), 77 deletions(-)

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2.49.0