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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