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(parent: 680af9c) | patch
tcp: fix SO_RCVLOWAT possible hangs under high mem pressure
authorEric Dumazet <edumazet@google.com>
Tue, 30 Jun 2020 20:51:28 +0000 (13:51 -0700)
committerDavid S. Miller <davem@davemloft.net>
Thu, 2 Jul 2020 00:46:04 +0000 (17:46 -0700)
commit609277586386d9a3b5fa58ab0060a1d6d971e639
tree331f8bc7f2b3e7d58d4df3c4e8dcc4d389f32fd6tree | snapshot
parent680af9c8a77a0cba2b329a72c93077ba983c1c49commit | diff
tcp: fix SO_RCVLOWAT possible hangs under high mem pressure

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: 5c7c6bfd5113 ("tcp: avoid extra wakeups for SO_RCVLOWAT users")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/ipv4/tcp_input.c diff | blob | history
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