From: Mike Snitzer <snitzer@redhat.com>
Date: Tue, 18 Aug 2015 14:31:09 +0000 (-0400)
Subject: dm thin: optimize async discard submission
X-Git-Tag: omap-for-v4.3/fixes-rc1~111^2~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=84f8bd86cc8977c344df572169f7ec10b8188cfa;p=pandora-kernel.git

dm thin: optimize async discard submission

__blkdev_issue_discard_async() doesn't need to worry about further
splitting because the upper layer blkdev_issue_discard() will have
already handled splitting bios such that the bi_size isn't
overflowed.

Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Acked-by: Joe Thornber <ejt@redhat.com>
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