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Re: [dm-devel] [PATCH 29/30] block: remove the BLKDEV_IFL_BARRIER flag



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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