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 19:35:10 +0000 [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
WARNING: multiple messages have this Message-ID (diff)
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
WARNING: multiple messages have this Message-ID (diff)
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
--
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next prev parent reply other threads:[~2007-08-27 19:35 UTC|newest]
Thread overview: 51+ 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 15:56 ` Dean Nelson
2007-08-27 15:56 ` Dean Nelson
2007-08-27 15:59 ` [PATCH 1/4] export __put_task_struct for XPMEM Dean Nelson
2007-08-27 15:59 ` Dean Nelson
2007-08-27 15:59 ` Dean Nelson
2007-08-27 16:13 ` Al Viro
2007-08-27 16:13 ` Al Viro
2007-08-27 16:13 ` Al Viro
2007-08-27 18:10 ` Dean Nelson
2007-08-27 18:10 ` Dean Nelson
2007-08-27 18:10 ` Dean Nelson
2007-08-27 18:15 ` Al Viro
2007-08-27 18:15 ` Al Viro
2007-08-27 18:15 ` Al Viro
2007-08-27 19:19 ` Dean Nelson
2007-08-27 19:19 ` Dean Nelson
2007-08-27 19:19 ` Dean Nelson
2007-08-27 19:35 ` Al Viro [this message]
2007-08-27 19:35 ` Al Viro
2007-08-27 19:35 ` Al Viro
2007-08-27 20:24 ` Robin Holt
2007-08-27 20:24 ` Robin Holt
2007-08-27 20:24 ` Robin Holt
2007-08-27 20:47 ` Al Viro
2007-08-27 20:47 ` Al Viro
2007-08-27 20:47 ` Al Viro
2007-08-28 12:09 ` Robin Holt
2007-08-28 18:01 ` Christoph Hellwig
2007-08-28 18:01 ` Christoph Hellwig
2007-08-28 18:01 ` Christoph Hellwig
2007-08-27 16:01 ` [PATCH 2/4] export zap_page_range " Dean Nelson
2007-08-27 16:01 ` Dean Nelson
2007-08-27 16:01 ` Dean Nelson
2007-08-27 16:02 ` [PATCH 3/4] add new lock ordering rule to mm/filemap.c Dean Nelson
2007-08-27 16:02 ` Dean Nelson
2007-08-27 16:02 ` Dean Nelson
2007-08-27 16:41 ` [PATCH 4/4] add SGI Altix cross partition memory (XPMEM) driver Dean Nelson
2007-08-27 16:41 ` Dean Nelson
2007-08-27 20:00 ` Adrian Bunk
2007-08-27 20:00 ` Adrian Bunk
2007-08-27 20:00 ` Adrian Bunk
2007-08-28 18:02 ` Christoph Hellwig
2007-08-28 18:02 ` Christoph Hellwig
2007-08-28 18:02 ` Christoph Hellwig
2007-08-28 19:00 ` Robin Holt
2007-08-28 19:00 ` Robin Holt
2007-08-28 19:00 ` Robin Holt
2007-08-28 19:05 ` Christoph Hellwig
2007-08-28 19:05 ` Christoph Hellwig
2007-08-28 19:05 ` Christoph Hellwig
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