-Original Message-
From: Andreas Dilger [mailto:adil...@dilger.ca]
Sent: Wednesday, May 04, 2011 10:52 PM
To: Gao, Yunpeng
Cc: Martin K. Petersen; linux-bt...@vger.kernel.org;
linux-e...@vger.kernel.org; linux-fsde...@vger.kernel.org;
linux-mmc@vger.kernel.org
Subject: Re: Is it possible
On Wed, May 04, 2011 at 08:51:39AM -0600, Andreas Dilger wrote:
I was aware of REQ_META, but I didn't know there was any benefit to
using it. I think it would be easy to set REQ_META on all ext4 metadata
if there was a reason to do so.
The CFQ ioscheduler pays attention to it (prioritising
On May 5, 2011, at 12:10, Matthew Wilcox wrote:
On Wed, May 04, 2011 at 08:51:39AM -0600, Andreas Dilger wrote:
I was aware of REQ_META, but I didn't know there was any benefit to
using it. I think it would be easy to set REQ_META on all ext4 metadata
if there was a reason to do so.
The CFQ
Hi Park,
Thanks a lot for the response.
It seems similar with TRIM. So how about to consider TRIM
implementation or extend it?
Yes, file system set REQ_DISCARD flag to notify block device driver to execute
TRIM.
And I noticed there's already a flag REQ_META used for file system meta data.
But
Yes, I have been working on some changes that allow us to tag bios and
pass the information out to storage. These patches have been on the back
burner for a while due to other commitments. But I'll dig them out and
post them later. We just discussed them a couple of weeks ago at the
Linux Storage
On 2011-05-04, at 5:45 AM, Gao, Yunpeng yunpeng@intel.com wrote:
Yes, I have been working on some changes that allow us to tag bios and
pass the information out to storage. These patches have been on the back
burner for a while due to other commitments. But I'll dig them out and
post them
Yunpeng == Gao, Yunpeng yunpeng@intel.com writes:
Yunpeng So, my question is, is there any plan or discussion on
Yunpeng supporting this feature (passing data type info to low level
Yunpeng block device driver) on file system developments? Especially
Yunpeng for ext4/btrfs, since now they
Hi,
It seems similar with TRIM. So how about to consider TRIM
implementation or extend it?
I'm not familiar with NCQ implementation but it's also helpful to implement it.
Thank you,
Kyungmin Park
On Tue, May 3, 2011 at 11:44 AM, Gao, Yunpeng yunpeng@intel.com wrote:
Currently, some new
