From: Chao Yu <yuchao0@huawei.com>
Date: Mon, 5 Jun 2017 10:29:07 +0000 (+0800)
Subject: f2fs: add f2fs_bug_on in __remove_discard_cmd
X-Git-Tag: MMI-PSA29.97-13-9~5194^2~29
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=d9703d9097d7c97f735a3b7870c52735a4dfa051;p=GitHub%2FMotorolaMobilityLLC%2Fkernel-slsi.git

f2fs: add f2fs_bug_on in __remove_discard_cmd

Recently, discard related codes have changed a lot, so add f2fs_bug_on to
detect potential bug.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
---

diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index 0fa717a47394..86a0c1095939 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -739,6 +739,8 @@ static void __remove_discard_cmd(struct f2fs_sb_info *sbi,
 {
 	struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
 
+	f2fs_bug_on(sbi, dc->ref);
+
 	if (dc->error == -EOPNOTSUPP)
 		dc->error = 0;