Joe Thornber 2d759a46b4
dm thin: remap the bios in a cell immediately ...
This use of direct submission in process_prepared_mapping() reduces
latency for submitting bios in a cell by avoiding adding those bios to
the deferred list and waiting for the next iteration of the worker.
But this direct submission exposes the potential for a race between
releasing a cell and incrementing deferred set. Fix this by introducing
dm_cell_visit_release() and refactoring inc_remap_and_issue_cell()
accordingly.
Signed-off-by: Joe Thornber <ejt@redhat.com >
Signed-off-by: Mike Snitzer <snitzer@redhat.com >
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Joe Thornber
2d759a46b4