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From: Al Viro <viro@ftp.linux.org.uk>
To: Dean Nelson <dcn@sgi.com>
Cc: akpm@linux-foundation.org, linux-ia64@vger.kernel.org,
	linux-kernel@vger.kernel.org, linux-mm@kvack.org,
	tony.luck@intel.com, jes@sgi.com
Subject: Re: [PATCH 1/4] export __put_task_struct for XPMEM
Date: Mon, 27 Aug 2007 20:35:10 +0100	[thread overview]
Message-ID: <20070827193510.GJ21089@ftp.linux.org.uk> (raw)
In-Reply-To: <20070827191906.GB30176@sgi.com>

On Mon, Aug 27, 2007 at 02:19:06PM -0500, Dean Nelson wrote:

> No operations can be done once it's closed, only while it's opened.

What the hell do you mean, can't be done?

	fd = open(...);
	fp = popen("/bin/date", "r");
	/* read from fp */
	fclose(fp);
	do operations on fd

And you've got yourself
	open
	fork duplicating descriptor
	exit closing that duplicate
	IO on original, after call of flush

  reply	other threads:[~2007-08-27 19:35 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-08-27 15:56 [PATCH 0/4] SGI Altix cross partition memory (XPMEM) Dean Nelson
2007-08-27 15:59 ` [PATCH 1/4] export __put_task_struct for XPMEM Dean Nelson
2007-08-27 16:13   ` Al Viro
2007-08-27 18:10     ` Dean Nelson
2007-08-27 18:15       ` Al Viro
2007-08-27 19:19         ` Dean Nelson
2007-08-27 19:35           ` Al Viro [this message]
2007-08-27 20:24             ` Robin Holt
2007-08-27 20:47               ` Al Viro
2007-08-28 18:01       ` Christoph Hellwig
2007-08-27 16:01 ` [PATCH 2/4] export zap_page_range " Dean Nelson
2007-08-27 16:02 ` [PATCH 3/4] add new lock ordering rule to mm/filemap.c Dean Nelson
2007-08-27 16:41 ` [PATCH 4/4] add SGI Altix cross partition memory (XPMEM) driver Dean Nelson
2007-08-27 20:00   ` Adrian Bunk
2007-08-28 18:02   ` Christoph Hellwig
2007-08-28 19:00     ` Robin Holt
2007-08-28 19:05       ` Christoph Hellwig

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