netdev - Re: [PATCH net] tcp: fix SO_RCVLOWAT possible hangs under high mem pressure

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Message-Id: <20200701.174648.1223650355222385804.davem@davemloft.net>
Date:   Wed, 01 Jul 2020 17:46:48 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     edumazet@...gle.com
Cc:     netdev@...r.kernel.org, eric.dumazet@...il.com
Subject: Re: [PATCH net] tcp: fix SO_RCVLOWAT possible hangs under high mem
 pressure

From: Eric Dumazet <edumazet@...gle.com>
Date: Tue, 30 Jun 2020 13:51:28 -0700

> Whenever tcp_try_rmem_schedule() returns an error, we are under
> trouble and should make sure to wakeup readers so that they
> can drain socket queues and eventually make room.
> 
> Fixes: 03f45c883c6f ("tcp: avoid extra wakeups for SO_RCVLOWAT users")
> Signed-off-by: Eric Dumazet <edumazet@...gle.com>

Applied and queued up for -stable, thanks Eric.