Revert "tuntap: add missing xdp flush"
authorJason Wang <jasowang@redhat.com>
Sat, 24 Feb 2018 03:32:24 +0000 (11:32 +0800)
committerDavid S. Miller <davem@davemloft.net>
Mon, 26 Feb 2018 18:49:48 +0000 (13:49 -0500)
commitf249be4d2c275fe2b98e389f471af75f758e5a59
treeb14288a99ea749d2462e984498767ce7fc3d1816
parent0c5661ecc5dd7ce296870a3eb7b62b1b280a5e89
Revert "tuntap: add missing xdp flush"

This reverts commit 762c330d670e3d4b795cf7a8d761866fdd1eef49. The
reason is we try to batch packets for devmap which causes calling
xdp_do_flush() in the process context. Simply disabling preemption
may not work since process may move among processors which lead
xdp_do_flush() to miss some flushes on some processors.

So simply revert the patch, a follow-up patch will add the xdp flush
correctly.

Reported-by: Christoffer Dall <christoffer.dall@linaro.org>
Fixes: 762c330d670e ("tuntap: add missing xdp flush")
Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/tun.c