Re: Discard merging / Write same support v5

2012-09-20 Thread Jens Axboe
On 09/20/2012 02:43 PM, James Bottomley wrote: > On Thu, 2012-09-20 at 14:33 +0200, Jens Axboe wrote: >> On 09/18/2012 06:19 PM, Martin K. Petersen wrote: >>> I've been beating on this patch kit for the last few weeks with a bunch >>> of different devices. I have also tested extensively with Shaohu

Re: Discard merging / Write same support v5

2012-09-20 Thread James Bottomley
On Thu, 2012-09-20 at 14:33 +0200, Jens Axboe wrote: > On 09/18/2012 06:19 PM, Martin K. Petersen wrote: > > I've been beating on this patch kit for the last few weeks with a bunch > > of different devices. I have also tested extensively with Shaohua Li's > > MD RAID0 discard support. > > > > The

Re: Discard merging / Write same support v5

2012-09-20 Thread Jens Axboe
On 09/18/2012 06:19 PM, Martin K. Petersen wrote: > I've been beating on this patch kit for the last few weeks with a bunch > of different devices. I have also tested extensively with Shaohua Li's > MD RAID0 discard support. > > The only functional change is support for discard and write same > bi

Discard merging / Write same support v5

2012-09-18 Thread Martin K. Petersen
I've been beating on this patch kit for the last few weeks with a bunch of different devices. I have also tested extensively with Shaohua Li's MD RAID0 discard support. The only functional change is support for discard and write same bio/request merging. Other than that there were a few tweaks for