Re: [PATCH net v2 1/2] page_pool: fix timing for checking and disabling napi_local
From: Jakub Kicinski <kuba@kernel.org>
Date: 2024-10-09 00:40:24
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On Wed, 25 Sep 2024 15:57:06 +0800 Yunsheng Lin wrote:
Use rcu mechanism to avoid the above concurrent access problem. Note, the above was found during code reviewing on how to fix the problem in [1].
The driver must make sure NAPI cannot be running while page_pool_destroy() is called. There's even an WARN() checking this.. if you know what to look for.