From d85532ed284e63b5c56eaf2418f262822af60be4 Mon Sep 17 00:00:00 2001
From: Jens Axboe <jens.axboe@oracle.com>
Date: Fri, 9 Nov 2007 12:52:45 +0100
Subject: [PATCH] block: fix requeue handling in blk_queue_invalidate_tags()

Credit goes to juergen.kadidlo@exasol.com for diagnosing this issue
and supplying the initial patch.

blk_queue_invalidate_tags() must use the proper requeueing paths instead
of open coding the re-add of the request, otherwise we bug out in rq
accounting. Just switch to using blk_requeue_request(), that takes care
of end-tag handling as well and also adds the blktrace REQUEUE notify
event that is also appropriate here.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
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