From: Michael S. Tsirkin <mst@redhat.com>
Date: Tue, 17 Sep 2013 06:30:34 +0000 (+0300)
Subject: vhost/scsi: use vmalloc for order-10 allocation
X-Git-Tag: v3.12-rc2~8^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=595cb754983d4387cb25b3dcf08f5129663d634e;p=pandora-kernel.git

vhost/scsi: use vmalloc for order-10 allocation

As vhost scsi device struct is large, if the device is
created on a busy system, kzalloc() might fail, so this patch does a
fallback to vzalloc().

As vmalloc() adds overhead on data-path, add __GFP_REPEAT
to kzalloc() flags to do this fallback only when really needed.

Reviewed-by: Asias He <asias@redhat.com>
Reported-by: Dan Aloni <alonid@stratoscale.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
---

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