On Tue, Aug 16, 2022 at 07:49:17AM +0200, Jiri Slaby wrote:
On 15. 08. 22, 22:51, Kuniyuki Iwashima wrote:
From: Wei Wang weiwan@google.com
commit 4d8f24eeedc58d5f87b650ddda73c16e8ba56559 upstream.
This reverts commit 4a41f453bedfd5e9cd040bad509d9da49feb3e2c.
This to-be-reverted commit was meant to apply a stricter rule for the stack to enter pingpong mode. However, the condition used to check for interactive session "before(tp->lsndtime, icsk->icsk_ack.lrcvtime)" is jiffy based and might be too coarse, which delays the stack entering pingpong mode. We revert this patch so that we no longer use the above condition to determine interactive session, and also reduce pingpong threshold to 1.
I would wait a bit before backporting this to stable: https://lore.kernel.org/all/ca408271-8730-eb2b-f12e-3f66df2e643a@kernel.org/
Looks like all is good, so I'll leave this be for now.
thanks,
greg k-h