Mikulas Patocka 2480945cd4
dm bufio: submit writes outside lock ...
This patch changes dm-bufio so that it submits write I/Os outside of the
lock. If the number of submitted buffers is greater than the number of
requests on the target queue, submit_bio blocks. We want to block outside
of the lock to improve latency of other threads that may need the lock.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com >
Signed-off-by: Alasdair G Kergon <agk@redhat.com >
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2480945cd4