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From: Linus Torvalds <torvalds@linux-foundation.org>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: Ingo Molnar <mingo@elte.hu>, Thomas Gleixner <tglx@linutronix.de>,
	LKML <linux-kernel@vger.kernel.org>,
	David Holmes - Sun Microsystems <David.Holmes@Sun.COM>,
	Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [PATCH] fix for futex_wait signal stack corruption
Date: Tue, 4 Dec 2007 17:46:13 -0800 (PST)	[thread overview]
Message-ID: <alpine.LFD.0.9999.0712041740490.13796@woody.linux-foundation.org> (raw)
In-Reply-To: <Pine.LNX.4.58.0712042016540.18042@gandalf.stny.rr.com>



On Tue, 4 Dec 2007, Steven Rostedt wrote:
> 
> Since arg3 is out, which do you prefer? Creating an arg4 (and perhaps
> more) in the block or having a u64 arg?  Changing all the args to u64 may
> be the best.

I suspect that the best option is probably to make that thing a unnamed 
union of the actual different types the different restart cases needs, 
which also allows you to name things appropriately and not have any wasted 
space.

Leave the arg0-3 ones around as one of the unions, both to avoid having to 
change other things and to have a "generic" one for stuff that simply 
doesn't much care (in order to not have tons and tons of substructures to 
the union when most users really don't need any fancy types).

I think we already depend on recent-enough gcc's that unnamed unions are 
ok and we don't need to play games with naming.

		Linus

  reply	other threads:[~2007-12-05  1:47 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-12-04 20:57 [PATCH] fix for futex_wait signal stack corruption Steven Rostedt
2007-12-04 21:09 ` Linus Torvalds
2007-12-04 21:39   ` Steven Rostedt
2007-12-04 22:43     ` Linus Torvalds
2007-12-05  1:23       ` Steven Rostedt
2007-12-05  1:46         ` Linus Torvalds [this message]
2007-12-05  3:17           ` [PATCH -v2] " Steven Rostedt
2007-12-05  3:41             ` Linus Torvalds
2007-12-05  3:47               ` Randy Dunlap
2007-12-05  3:53                 ` Steven Rostedt
2007-12-05  5:33               ` David Holmes - Sun Microsystems
2007-12-05  6:06                 ` Linus Torvalds
2007-12-05  6:14                   ` David Holmes - Sun Microsystems
2007-12-05  5:54               ` Thomas Gleixner
2007-12-05 10:31                 ` Ingo Molnar

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