From: "Adam J. Richter" <adam@yggdrasil.com>
To: hch@infradead.org
Cc: aia21@cantab.net, kernel@bonin.ca, linux-kernel@vger.kernel.org
Subject: Re: Loop devices under NTFS
Date: Tue, 27 Aug 2002 06:23:48 -0700 [thread overview]
Message-ID: <200208271323.GAA04833@adam.yggdrasil.com> (raw)
>On Tue, Aug 27, 2002 at 05:40:52AM -0700, Adam J. Richter wrote:
>> There are only a few file systems that provide writable files
>> without aops->{prepare,commit}_write. I think they are just tmpfs,
>> ntfs and intermezzo. If all file systems that provided writable files
>> could be expected to provide {prepare,commit}_write, I could eliminate
>> the file_ops->{read,write} code from loop.c.
>This is the wrong level of abstraction. There is no reason why a filesystem
>has to use the pagecache at all.
Are you complaining about something in loop.c, or are you just
saying that you'd like to see some kind of
generic_file_{prepare,commit}_write routines that plain files in all
writable filesystems could use?
>Note that there is a more severe bug in loop.c: it's abuse of
>do_generic_file_read.
Could you please elaborate on this and give an example where
it return incorrect data, deadlock, generate a kernel oops, etc.?
Adam J. Richter __ ______________ 575 Oroville Road
adam@yggdrasil.com \ / Milpitas, California 95035
+1 408 309-6081 | g g d r a s i l United States of America
"Free Software For The Rest Of Us."
next reply other threads:[~2002-08-27 13:19 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-08-27 13:23 Adam J. Richter [this message]
2002-08-27 13:27 ` Loop devices under NTFS Christoph Hellwig
-- strict thread matches above, loose matches on Subject: below --
2002-08-29 11:00 Adam J. Richter
2002-08-29 11:27 ` Anton Altaparmakov
2002-08-29 15:16 ` Jari Ruusu
2002-08-28 9:17 Adam J. Richter
2002-08-28 1:49 Adam J. Richter
2002-08-28 8:36 ` Urban Widmark
2002-08-28 1:06 Adam J. Richter
2002-08-28 15:50 ` Andre Bonin
2002-08-28 16:41 ` Christoph Hellwig
2002-08-27 23:42 Adam J. Richter
2002-08-27 23:59 ` Christoph Hellwig
2002-08-27 13:53 Adam J. Richter
2002-08-27 17:04 ` Christoph Hellwig
2002-08-27 17:26 ` Jan Harkes
2002-08-27 12:40 Adam J. Richter
2002-08-27 12:46 ` Anton Altaparmakov
2002-08-27 13:15 ` Christoph Hellwig
2002-08-27 4:48 Andre Bonin
2002-08-27 9:17 ` Anton Altaparmakov
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