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Re: [dm-devel] [PATCH 29/30] block: remove the BLKDEV_IFL_BARRIER flag
- From: Christoph Hellwig <hch lst de>
- To: Tejun Heo <tj kernel org>
- Cc: jeremy goop org, jack suse cz, snitzer redhat com, mst redhat com, linux-ide vger kernel org, dm-devel redhat com, James Bottomley suse de, konishi ryusuke lab ntt co jp, hch lst de, k-ueda ct jp nec com, vst vlnb net, linux-scsi vger kernel org, Christoph Hellwig <hch infradead org>, rusty rustcorp com au, linux-raid vger kernel org, swhiteho redhat com, chris mason oracle com, tytso mit edu, jaxboe fusionio com, linux-kernel vger kernel org, linux-fsdevel vger kernel org, rwheeler redhat com
- Subject: Re: [dm-devel] [PATCH 29/30] block: remove the BLKDEV_IFL_BARRIER flag
- Date: Wed, 25 Aug 2010 17:59:20 +0200
On Wed, Aug 25, 2010 at 05:47:46PM +0200, Tejun Heo wrote:
> From: Christoph Hellwig <hch infradead org>
>
> Remove support for barriers on discards, which is unused now. Also
> remove the DISCARD_NOBARRIER I/O type in favour of just setting the
> rw flags up locally in blkdev_issue_discard.
>
> tj: Also remove DISCARD_SECURE and use REQ_SECURE directly.
REQ_SECURE was just added for mmc. I assume they plan to submit the
driver support soon.
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