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(parent: 2c51c62) | patch
net/packet: remove locking from packet_rcv_has_room()
authorEric Dumazet <edumazet@google.com>
Wed, 12 Jun 2019 16:52:32 +0000 (09:52 -0700)
committerDavid S. Miller <davem@davemloft.net>
Sat, 15 Jun 2019 01:52:14 +0000 (18:52 -0700)
commit3a2bb84e4aeab5c90d16e1cd17dbaa17631af529
treec49e1fe841e2a01314f4d7454d8472c6fcd7d5dftree | snapshot
parent2c51c6273c73ff04099f48fb42dfdd2acc7a1b70commit | diff
net/packet: remove locking from packet_rcv_has_room()

__packet_rcv_has_room() can now be run without lock being held.

po->pressure is only a non persistent hint, we can mark
all read/write accesses with READ_ONCE()/WRITE_ONCE()
to document the fact that the field could be written
without any synchronization.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/packet/af_packet.c diff | blob | history
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