From: Tejun Heo <tj@kernel.org>
Date: Tue, 5 Jun 2012 03:40:58 +0000 (-0700)
Subject: block: add q->nr_rqs[] and move q->rq.elvpriv to q->nr_rqs_elvpriv
X-Git-Tag: v3.6-rc1~6^2~13
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8a5ecdd42862bf87ceab00bf2a15d7eabf58c02d;p=pandora-kernel.git

block: add q->nr_rqs[] and move q->rq.elvpriv to q->nr_rqs_elvpriv

Add q->nr_rqs[] which currently behaves the same as q->rq.count[] and
move q->rq.elvpriv to q->nr_rqs_elvpriv.  blk_drain_queue() is updated
to use q->nr_rqs[] instead of q->rq.count[].

These counters separates queue-wide request statistics from the
request list and allow implementation of per-queue request allocation.

While at it, properly indent fields of struct request_list.

Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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