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From: Christoph Hellwig <hch@infradead.org>
To: Oleg Nesterov <oleg@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
	David Howells <dhowells@redhat.com>,
	James Morris <jmorris@namei.org>,
	"Paul E. McKenney" <paulmck@linux.vnet.ibm.com>,
	Roland McGrath <roland@redhat.com>,
	Stephen Smalley <sds@tycho.nsa.gov>,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH -mm 1/2] rename is_single_threaded(task) to is_current_single_threaded(void)
Date: Thu, 9 Jul 2009 21:33:22 -0400	[thread overview]
Message-ID: <20090710013322.GA27719@infradead.org> (raw)
In-Reply-To: <20090709212847.GA10238@redhat.com>

On Thu, Jul 09, 2009 at 11:28:47PM +0200, Oleg Nesterov wrote:
> (on top of rework-fix-is_single_threaded.patch)
> 
> - is_single_threaded(task) is not safe unless task == current,
>   we can't use task->signal or task->mm.
> 
> - it doesn't make sense unless task == current, the task can
>   fork right after the check.
> 
> Rename it to is_current_single_threaded() and kill the argument.

It would be more natural to put the current first, as in
current_is_single_threaded().  That would also fit with the various
other current_* helpers we have.


  parent reply	other threads:[~2009-07-10  1:33 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-07-09 21:28 [PATCH -mm 1/2] rename is_single_threaded(task) to is_current_single_threaded(void) Oleg Nesterov
2009-07-09 23:04 ` James Morris
2009-07-10  1:33 ` Christoph Hellwig [this message]
2009-07-10  1:46   ` Oleg Nesterov
2009-07-10  1:48   ` [PATCH v2 -mm 1/2] rename is_single_threaded(task) to current_is_single_threaded(void) Oleg Nesterov
2009-07-10 14:07     ` David Howells
2009-07-10  1:48   ` [PATCH v2 -mm 2/2] current_is_single_threaded: don't use ->mmap_sem Oleg Nesterov
2009-07-10 14:07     ` David Howells
2009-07-12 22:12       ` James Morris
2009-07-13 23:56         ` Oleg Nesterov
2009-07-16 23:41           ` James Morris

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