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Commit 4f9cd311 authored by Cong Wang's avatar Cong Wang Committed by Greg Kroah-Hartman
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sch_qfq: make qfq_qlen_notify() idempotent



commit 55f9eca4bfe30a15d8656f915922e8c98b7f0728 upstream.

qfq_qlen_notify() always deletes its class from its active list
with list_del_init() _and_ calls qfq_deactivate_agg() when the whole list
becomes empty.

To make it idempotent, just skip everything when it is not in the active
list.

Also change other list_del()'s to list_del_init() just to be extra safe.

Reported-by: default avatarGerrard Tai <gerrard.tai@starlabs.sg>
Signed-off-by: default avatarCong Wang <xiyou.wangcong@gmail.com>
Reviewed-by: default avatarSimon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20250403211033.166059-5-xiyou.wangcong@gmail.com


Acked-by: default avatarJamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: default avatarPaolo Abeni <pabeni@redhat.com>
Signed-off-by: default avatarSiddh Raman Pant <siddh.raman.pant@oracle.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 9a5fd5c2
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