linux-kernel - Re: [PATCH 2/4] set_restore_sigmask TIF

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Message-ID: <alpine.LFD.1.00.0804080748320.2886@woody.linux-foundation.org>
Date:	Tue, 8 Apr 2008 07:53:15 -0700 (PDT)
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Oleg Nesterov <oleg@...sign.ru>
cc:	Roland McGrath <roland@...hat.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Martin Schwidefsky <schwidefsky@...ibm.com>,
	linux-s390@...r.kernel.org, tony.luck@...el.com,
	linux-ia64@...r.kernel.org, linux-arch@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/4] set_restore_sigmask TIF_SIGPENDING



On Tue, 8 Apr 2008, Oleg Nesterov wrote:
> 
> We only need this flag as an implicit parameter to the arch dependent do_signal()
> which we can't call directly, and thus it must imply TIF_SIGPENDING, and it
> is not valid after do_signal() (should be cleared). This all looks like
> ERESTART_ magic, why should we add something else ?

I think you're right. I didn't look at the actual code-paths, but my gut 
feel says "yes, TIF_RESTORE_SIGMASK should actually have been 
-ERESTARTSIGRESTORE". That sounds like the right thing to do.

		Linus
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