[PATCH, RFC] xfs: batched discard support

[Mark Lord]

Mark Lord wrote:
> Christoph Hellwig wrote:
>> On Sat, Aug 15, 2009 at 10:19:21PM -0400, Mark Lord wrote:
>>> Mark Lord wrote:
>>>> Christoph Hellwig wrote:
>>> ..
>>>>> Mark, any chance to try it?  Just create an XFS filesystem, age it a
>>>>> bit and then call the attached little trim.c program on the mountmoint
>>>>> (or any file inside the filesystem for that matter)
>>>> ..
>>>>
>>>> Looking at it now.  Thanks, Christoph!
>>> ..
>>>
>>> Fails to work on 64-bit kernel w/ 32-bit userspace (no compat ioctl).
>>> Rebuilding with 32-bit kernel now..
>>
>> The actual ioctl is compatible, just add the
>>
>>     case XFS_IOC_TRIM:
>>         return xfs_ioc_trim(mp, arg);
>>
>> to xfs_file_compat_ioctl().  I'll add this to the next spin of the patch.
> ..
> 
> Peachy.  Rebuilding again now..
> 
> Don't wait up for this .. I'll finish it on Sunday.  Bedtime.  :)
..

Mmm.. doesn't work on stock 2.6.31-rc6.
It must also require Matthew's patches for discard/trim support.

Later.