linux-kernel - Re: [CRIU] [PATCH 2/3] signalfd: add ability to return siginfo in a raw format (v2)

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Message-ID: <20130120195555.GA14177@redhat.com>
Date:	Sun, 20 Jan 2013 20:55:55 +0100
From:	Oleg Nesterov <oleg@...hat.com>
To:	Andrew Vagin <avagin@...allels.com>
Cc:	"Michael Kerrisk (man-pages)" <mtk.manpages@...il.com>,
	Andrey Wagin <avagin@...il.com>,
	David Howells <dhowells@...hat.com>,
	Pavel Emelyanov <xemul@...allels.com>,
	linux-api@...r.kernel.org, linux-kernel@...r.kernel.org,
	criu@...nvz.org, Cyrill Gorcunov <gorcunov@...nvz.org>,
	Alexander Viro <viro@...iv.linux.org.uk>,
	linux-fsdevel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [CRIU] [PATCH 2/3] signalfd: add ability to return siginfo in
	a raw format (v2)

On 01/20, Andrew Vagin wrote:
>
> > SFD_RAW
> > SFD_SHARED_QUEUE -- reads will be from process-wide shared signal queue
> > SFD_PER_THREAD_QUEUE --reads will be from per-thread signal queue
>
> I suggested this variant in the initial series, but then we decided to
> avoid adding new flags.

Yes, because SFD_SHARED/PRIVATE will add even more complications into this
code. And outside of signalfd.c too. And nobody except c/r will ever use
these features I guess.

> Oleg, what do you think about this?

See above... but as I said from the very beginning I won't insist.

Oleg.

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