Change the poller to tolerate channel deletion within
an I/O completion callback. This won't happen today
because channel deletion is always deferred, but
prepare for that case.
It turns out this is simpler anyway.
Change-Id: Ibff23d84fe14247849e95cebc3c80369812bdd6c
Signed-off-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-on: https://review.gerrithub.io/370525
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com>
12b53038f6