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Date:   Fri, 12 Aug 2022 09:50:14 +0000
To:     Mikulas Patocka <>
Subject: Re: [PATCH] rds: add missing barrier to release_refill


This patch was applied to netdev/net.git (master)
by David S. Miller <>:

On Wed, 10 Aug 2022 09:00:42 -0400 (EDT) you wrote:
> The functions clear_bit and set_bit do not imply a memory barrier, thus it
> may be possible that the waitqueue_active function (which does not take
> any locks) is moved before clear_bit and it could miss a wakeup event.
> Fix this bug by adding a memory barrier after clear_bit.
> Signed-off-by: Mikulas Patocka <>
> Cc:

Here is the summary with links:
  - rds: add missing barrier to release_refill

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