From: Michael S. Tsirkin <mst@redhat.com>
Date: Tue, 19 Jul 2011 14:15:43 +0000 (+0300)
Subject: vhost: optimize interrupt enable/disable
X-Git-Tag: v3.1-rc1~316^2~91^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b834226b04d6fb51178a64e98872856986c71474;p=pandora-kernel.git

vhost: optimize interrupt enable/disable

As we now only update used ring after enabling
the backend, we can write flags with __put_user:
as that's done on data path, it matters.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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