netdev - Re: [PATCH 6/6] fs: replace f_ops->get_poll_head with a static ->f_poll

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Message-ID: <CA+55aFwOtTVTjwLB11_k=7sPTz55TRhaF=Tfn+MhjwGtu5bScA@mail.gmail.com>
Date:   Fri, 29 Jun 2018 06:40:49 -0700
From:   Linus Torvalds <torvalds@...ux-foundation.org>
To:     Christoph Hellwig <hch@....de>
Cc:     Al Viro <viro@...iv.linux.org.uk>,
        linux-fsdevel <linux-fsdevel@...r.kernel.org>,
        Network Development <netdev@...r.kernel.org>, LKP <lkp@...org>
Subject: Re: [PATCH 6/6] fs: replace f_ops->get_poll_head with a static
 ->f_poll_head pointer

On Fri, Jun 29, 2018 at 6:29 AM Christoph Hellwig <hch@....de> wrote:
> No need for poll_table_entry, we just need a wait_queue_head.
> poll_table_entry is an select.c internal (except for two nasty driver) -
> neither epoll nor most in-kernel callers use it.

Well, you need the poll_table for the "poll_wait()", and you would
need to be able to have multiple wait-queues even though you only have
one file you're waiting for.

But yes, it doesn't really need to be the full complex poll_table_entry model.

              Linus