From: Coly Li <colyli@suse.de>
Date: Thu, 9 Aug 2018 07:48:45 +0000 (+0800)
Subject: bcache: add a comment in super.c
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=e57fd746848597e9c701751e26416d4b2e3b27ea;p=openwrt%2Fstaging%2Fblogic.git

bcache: add a comment in super.c

This patch adds a line of code comment in super.c:register_bdev(), to
make code to be more comprehensible.

Signed-off-by: Coly Li <colyli@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---

diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c
index c7ffa6ef3f82..1e85cbb4c159 100644
--- a/drivers/md/bcache/super.c
+++ b/drivers/md/bcache/super.c
@@ -1291,6 +1291,7 @@ static void register_bdev(struct cache_sb *sb, struct page *sb_page,
 	pr_info("registered backing device %s", dc->backing_dev_name);
 
 	list_add(&dc->list, &uncached_devices);
+	/* attach to a matched cache set if it exists */
 	list_for_each_entry(c, &bch_cache_sets, list)
 		bch_cached_dev_attach(dc, c, NULL);