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xen/blkback: Seperate the bio allocation and the bio submission.
authorKonrad Rzeszutek Wilk <konrad@kernel.org>
Fri, 15 Apr 2011 14:51:27 +0000 (10:51 -0400)
committerKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Fri, 15 Apr 2011 14:54:42 +0000 (10:54 -0400)
We seperate the bio allocation (bio_alloc) from the bio submission so
that the error paths are much easier, and also so that the bio
submission can be done in one tight loop. It also makes the
plug/unplug calls much much easier.

Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

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