From: Mike Snitzer <snitzer@redhat.com>
Date: Thu, 9 Apr 2015 20:53:24 +0000 (-0400)
Subject: dm crypt: leverage immutable biovecs when decrypting on read
X-Git-Tag: omap-for-v4.1/fixes-rc1~106^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5977907937afa2b5584a874d44ba6c0f56aeaa9c;p=pandora-kernel.git

dm crypt: leverage immutable biovecs when decrypting on read

Commit 003b5c571 ("block: Convert drivers to immutable biovecs")
stopped short of changing dm-crypt to leverage the fact that the biovec
array of a bio will no longer be modified.

Switch to using bio_clone_fast() when cloning bios for decryption after
read.

Signed-off-by: Mike Snitzer <snitzer@redhat.com>
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