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[ Upstream commit 342debc12183b51773b3345ba267e9263bdfaaef ] After making all ->qlen_notify() callbacks idempotent, now it is safe to remove the check of qlen!=0 from both fq_codel_dequeue() and codel_qdisc_dequeue(). Bug: 410432097 Reported-by: Gerrard Tai <gerrard.tai@starlabs.sg> Fixes:4b549a2ef4("fq_codel: Fair Queue Codel AQM") Fixes:76e3cc126b("codel: Controlled Delay AQM") Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com> Reviewed-by: Simon Horman <horms@kernel.org> Link: https://patch.msgid.link/20250403211636.166257-1-xiyou.wangcong@gmail.com Acked-by: Jamal Hadi Salim <jhs@mojatatu.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Sasha Levin <sashal@kernel.org> (cherry picked from commit 4d55144b12e742404bb3f8fee6038bafbf45619d) Signed-off-by: Lee Jones <joneslee@google.com> Change-Id: I9508beb45995f003612895517ea391ef4beee7b4