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SubjectRe: [patch 6/7] blk: add plug for blkdev_issue_discard
On Mon, Mar 12, 2012 at 11:04:18AM +0800, Shaohua Li wrote:
> In raid 0 case, a big discard request is divided into several small requests
> in chunk_size unit. Such requests can be merged in low layer if we have
> correct plug added. This should improve the performance a little bit.

Martin posted a patch to remove the support for allowing merging of discard
requests. But this seems to be a reasonable use case for allowing mering
discard requests. CCing Martin.


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