Messages in this thread | | | Date | Thu, 14 Jan 2021 17:17:07 +0100 | From | Sebastian Andrzej Siewior <> | Subject | Re: [PATCH] zsmalloc: do not use bit_spin_lock |
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On 2020-12-20 08:21:37 [+0100], Vitaly Wool wrote: > Not really because bit spinlock leaves preemption disabled.
It leaves it disabled for a reason. Now you just spin until the original context gets back on the CPU. On UP with preemption, if the "lock owner" gets preempted, the next lock attempt will lock-up the system.
Sebastian
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