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 0fa717a473948717bae6faff5f9eab7e433c1342..86a0c1095939c5fe841d367d4a2aa9f9ff83cbe8 100644 (file)
--- 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;