From: Hou Tao <houtao1@huawei.com>
Date: Tue, 26 Jul 2016 09:13:42 +0000 (+0800)
Subject: blkcg: kill unused field nr_undestroyed_grps
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=bfd279a868987e4bca7dc72a029e0fc50316d6df;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

blkcg: kill unused field nr_undestroyed_grps

'nr_undestroyed_grps' in struct throtl_data was used to count
the number of throtl_grp related with throtl_data, but now
throtl_grp is tracked by blkcg_gq, so it is useless anymore.

Signed-off-by: Hou Tao <houtao1@huawei.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
---

diff --git a/block/blk-throttle.c b/block/blk-throttle.c
index 47a3e540631a..c5494e403239 100644
--- a/block/blk-throttle.c
+++ b/block/blk-throttle.c
@@ -145,11 +145,6 @@ struct throtl_data
 	/* Total Number of queued bios on READ and WRITE lists */
 	unsigned int nr_queued[2];
 
-	/*
-	 * number of total undestroyed groups
-	 */
-	unsigned int nr_undestroyed_grps;
-
 	/* Work for dispatching throttled bios */
 	struct work_struct dispatch_work;
 };