From: Philipp Reisner <philipp.reisner@linbit.com>
Date: Sun, 7 Nov 2010 14:56:29 +0000 (+0100)
Subject: drbd: Implemented priority inheritance for resync requests
X-Git-Tag: v2.6.39-rc1~37^2~99
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e3555d8545976703938d1b59e2db509426dbe02c;p=pandora-kernel.git

drbd: Implemented priority inheritance for resync requests

We only issue resync requests if there is no significant application IO
going on. = Application IO has higher priority than resnyc IO.

If application IO can not be started because the resync process locked
an resync_lru entry, start the IO operations necessary to release the
lock ASAP.

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
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