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From: Eric Dumazet <edumazet@google.com>
Date: Sun, 11 Feb 2024 10:35:31 +0100
Message-ID: <CANn89i+fBA1EQJdcgiwatcX4bdW0DXCEoHQC7ps-TboCt-p5hQ@mail.gmail.com>
Subject: Re: [PATCH net-next v7 1/4] eventpoll: support busy poll per epoll instance
To: Joe Damato <jdamato@fastly.com>
Cc: linux-kernel@vger.kernel.org, netdev@vger.kernel.org, 
	chuck.lever@oracle.com, jlayton@kernel.org, linux-api@vger.kernel.org, 
	brauner@kernel.org, davem@davemloft.net, alexander.duyck@gmail.com, 
	sridhar.samudrala@intel.com, kuba@kernel.org, willemdebruijn.kernel@gmail.com, 
	weiwan@google.com, David.Laight@aculab.com, arnd@arndb.de, sdf@google.com, 
	amritha.nambiar@intel.com, Alexander Viro <viro@zeniv.linux.org.uk>, 
	Jan Kara <jack@suse.cz>, 
	"open list:FILESYSTEMS (VFS and infrastructure)" <linux-fsdevel@vger.kernel.org>
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On Fri, Feb 9, 2024 at 10:15=E2=80=AFPM Joe Damato <jdamato@fastly.com> wro=
te:
>
> Allow busy polling on a per-epoll context basis. The per-epoll context
> usec timeout value is preferred, but the pre-existing system wide sysctl
> value is still supported if it specified.
>
> busy_poll_usecs is a u32, but in a follow up patch the ioctl provided to
> the user only allows setting a value from 0 to S32_MAX.
>
> Signed-off-by: Joe Damato <jdamato@fastly.com>
> Acked-by: Stanislav Fomichev <sdf@google.com>

Reviewed-by: Eric Dumazet <edumazet@google.com>