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>

diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index e9aaddba763f96f45b1b288fa638c15105643f1e..1e0cc5a9ff8d7b6e9a9e19195ca781e7ec6f28e6 100644 (file)
--- 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;