[Ocfs2-devel] [PATCH V3 3/8] Cleancache: core ops functions and configuration

[Nitin Gupta]

On 07/07/2010 02:21 AM, Konrad Rzeszutek Wilk wrote:
> On Tue, Jun 22, 2010 at 09:26:28AM -0700, Dave Hansen wrote:
>> On Mon, 2010-06-21 at 16:19 -0700, Dan Magenheimer wrote:
>>> --- linux-2.6.35-rc2/include/linux/cleancache.h 1969-12-31 17:00:00.000000000 -0700
>>> +++ linux-2.6.35-rc2-cleancache/include/linux/cleancache.h      2010-06-21 14:45:18.000000000 -0600
>>> @@ -0,0 +1,88 @@
>>> +#ifndef _LINUX_CLEANCACHE_H
>>> +#define _LINUX_CLEANCACHE_H
>>> +
>>> +#include <linux/fs.h>
>>> +#include <linux/mm.h>
>>> +
>>> +struct cleancache_ops {
>>> +       int (*init_fs)(size_t);
>>> +       int (*init_shared_fs)(char *uuid, size_t);
>>> +       int (*get_page)(int, ino_t, pgoff_t, struct page *);
>>> +       void (*put_page)(int, ino_t, pgoff_t, struct page *);
>>> +       void (*flush_page)(int, ino_t, pgoff_t);
>>> +       void (*flush_inode)(int, ino_t);
>>> +       void (*flush_fs)(int);
>>> +};
>>> + 
>>
>> How would someone go about testing this code?  Is there an example
>> cleancache implementation?
> 
> Dan,
> 
> Can you reference with a link or a git branch the patches that utilize
> this?
> 
> And also mention that in the 0/X patch so that folks can reference your
> cleancache implementation?
> 
>

FYI.

I am working on 'zcache' which uses cleancache_ops to provide page cache
compression support. I will be posting it to LKML before end of next week.

Thanks,
Nitin