net: rps: protect last_qtail with rps_input_queue_tail_save() helper

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Removing one unnecessary reader protection and add another writer
protection to finish the locklessly proctection job.

Note: the removed READ_ONCE() is not needed because we only have to protect
the locklessly reader in the different context (rps_may_expire_flow()).

Signed-off-by: Jason Xing <kernelxing@tencent.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Jason Xing 2024-04-18 15:36:01 +08:00 • committed by David S. Miller

parent 00ac0dc347

commit 84b6823cd9

1 changed files with 4 additions and 4 deletions

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net/core/dev.c

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