linux-kernel - Re: 2.6.xx: NFS: directory motion/cam2 contains a readdir loop

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Date:	Fri, 29 Jul 2011 18:23:22 -0400 (EDT)
From:	Justin Piszcz <jpiszcz@...idpixels.com>
To:	Trond Myklebust <Trond.Myklebust@...app.com>
cc:	Bryan Schumaker <bjschuma@...app.com>,
	Christoph Hellwig <hch@...radead.org>,
	"J. Bruce Fields" <bfields@...ldses.org>,
	linux-nfs@...r.kernel.org, linux-kernel@...r.kernel.org,
	xfs@....sgi.com
Subject: Re: 2.6.xx: NFS: directory motion/cam2 contains a readdir loop



On Fri, 29 Jul 2011, Trond Myklebust wrote:

> On Fri, 2011-07-29 at 16:59 -0400, Justin Piszcz wrote:
>> On Fri, 29 Jul 2011, Bryan Schumaker wrote:
>>
>>> How does this look for printing out more information when a cookie loop is detected?  Is there anything else that should be printed out?  My patch applies on top of Trond's from yesterday.
>>
>>
>> Hi,
>>
>> This fails against 2.6.38:
>>
>> patching file fs/nfs/dir.c
>> Hunk #1 FAILED at 134.
>> Hunk #2 FAILED at 173.
>> Hunk #3 FAILED at 323.
>> Hunk #4 FAILED at 336.
>> Hunk #5 FAILED at 349.
>> Hunk #6 succeeded at 320 (offset -48 lines).
>> Hunk #7 FAILED at 741.
>> Hunk #8 succeeded at 716 (offset -59 lines).
>> Hunk #9 succeeded at 749 (offset -59 lines).
>> Hunk #10 succeeded at 763 (offset -59 lines).
>> 6 out of 10 hunks FAILED -- saving rejects to file fs/nfs/dir.c.rej
>> patching file include/linux/nfs_fs.h
>> Hunk #1 FAILED at 99.
>> 1 out of 1 hunk FAILED -- saving rejects to file include/linux/nfs_fs.h.rej
>> atom:/usr/src/linux#
>>
>> And the 3.0 kernel is broken for my wireless adapter:
>> http://www.gossamer-threads.com/lists/linux/kernel/1411576
>>
>> If you can make a combined patch for 2.6.38 I can try it, 2.6.39+ have a
>> horrible driver (rt2800usb) and 1 person emailed me as well stating the
>> same thing off-list (they stick with the manufacturer's driver or the *sta
>> one).
>
> I don't understand. The readdir loop detection code was first merged
> upstream in 2.6.39. 2.6.38 doesn't report any loops...

Hi,

Sorry--(my error) this is meant for the client, patched & will e-mail when 
it happens again.

# patch -p1 < /home/jpiszcz/patch1
patching file fs/nfs/dir.c
patching file include/linux/nfs_fs.h

# patch -p1 < /home/jpiszcz/patch2
patching file fs/nfs/dir.c

(recompile->reboot->waiting for next error)

Justin.

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