From: Jonathan Brassow <jbrassow@redhat.com>
Date: Thu, 13 Jan 2011 19:59:51 +0000 (+0000)
Subject: dm log userspace: group clear and mark requests
X-Git-Tag: v2.6.38-rc1~221^2~21
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=085ae0651b2791f3a430ddb76da92925b9952e13;p=pandora-kernel.git

dm log userspace: group clear and mark requests

Allow the device-mapper log's 'mark' and 'clear' requests to be
grouped and processed in a batch.  This can significantly reduce the
amount of traffic going between the kernel and userspace (where the
processing daemon resides).

Signed-off-by: Jonathan Brassow <jbrassow@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
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