From f9a3ef3f55c10c41e02ed49103bf56521922d09e Mon Sep 17 00:00:00 2001
From: Andrew Morton <akpm@linux-foundation.org>
Date: Wed, 20 Mar 2013 15:07:00 +1100
Subject: [PATCH] loop-cleanup-partitions-when-detaching-loop-device-fix

add comment, per Phillip

Cc: Jens Axboe <axboe@kernel.dk>
Cc: Phillip Susi <psusi@ubuntu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
 drivers/block/loop.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index e9aaddba763f..1e0cc5a9ff8d 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -1049,6 +1049,10 @@ static int loop_clr_fd(struct loop_device *lo)
 		lo->lo_disk->flags |= GENHD_FL_NO_PART_SCAN;
 	mutex_unlock(&lo->lo_ctl_mutex);
 	if (bdev) {
+		/*
+		 * Remove all partitions, since BLKRRPART won't remove user
+		 * added partitions when max_part=0.
+		 */
 		struct disk_part_iter piter;
 		struct hd_struct *part;
 
-- 
2.39.5