linux-kernel - Re: [PATCH 0/8] ceph: fscache support & upstream changes

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Message-ID: <CANP1eJFMdcsgSwVO9jhYQwn2C+19db1uy5=du7yYFbmiB6em0A@mail.gmail.com>
Date:	Fri, 6 Sep 2013 15:02:46 -0400
From:	Milosz Tanski <milosz@...in.com>
To:	Sage Weil <sage@...tank.com>
Cc:	sprabhu@...hat.com, ceph-devel <ceph-devel@...r.kernel.org>,
	"Yan, Zheng" <zheng.z.yan@...el.com>,
	Hongyi Jia <jiayisuse@...il.com>,
	"linux-cachefs@...hat.com" <linux-cachefs@...hat.com>,
	"linux-fsdevel@...r.kernel.org" <linux-fsdevel@...r.kernel.org>,
	linux-kernel@...r.kernel.org, David Howells <dhowells@...hat.com>
Subject: Re: [PATCH 0/8] ceph: fscache support & upstream changes

Sage,

I've taken David's latest changes and per his request merged his
'fscache-fixes-for-ceph' tag then applied my changes on top of that.
In addition to the pervious changes I also added a fix for the
warnings the linux-next build bot found.

I've given the results a quick test to make sure it builds, boots and
runs okay. The code is located in my repository:

  https://adfin@...bucket.org/adfin/linux-fs.git in the wip-fscache-v2 branch

I hope that this is the final go for now and thanks for everyone's patience.

 - Milosz

On Fri, Sep 6, 2013 at 11:59 AM, David Howells <dhowells@...hat.com> wrote:
> Milosz Tanski <milosz@...in.com> wrote:
>
>> After running this for a day on some loaded machines I ran into what
>> looks like an old issue with the new code. I remember you saw an issue
>> that manifested it self in a similar way a while back.
>>
>> [13837253.462779] FS-Cache: Assertion failed
>> [13837253.462782] 3 == 5 is false
>> [13837253.462807] ------------[ cut here ]------------
>> [13837253.462811] kernel BUG at fs/fscache/operation.c:414!
>
> Bah.
>
> I forgot to call fscache_op_complete().  Patch updated and repushed.
>
> Btw, I've reordered the patches to put the CIFS patch last.  Can you merge the
> patches prior to the CIFS commit from my branch rather than cherry picking
> them so that if they go via two different routes, GIT will handle the merge
> correctly?  I've stuck a tag on it (fscache-fixes-for-ceph) to make that
> easier for you.
>
> I've also asked another RH engineer to try doing some basic testing on the
> CIFS stuff - which may validate the fscache_readpages_cancel patch.
>
> David
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