From 9af45ef5ab8ce4a13c553200dc15509441fbd68f Mon Sep 17 00:00:00 2001
From: Jaegeuk Kim <jaegeuk.kim@samsung.com>
Date: Mon, 21 Jan 2013 17:34:21 +0900
Subject: [PATCH] f2fs: add comments of start_bidx_of_node
The caller of start_bidx_of_node() should give proper node offsets which
point only direct node blocks. Otherwise, it is a caller's bug.
This patch adds comments to make it clear.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
---
fs/f2fs/gc.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c
index 809cfec6683cf..c386910dacc53 100644
--- a/fs/f2fs/gc.c
+++ b/fs/f2fs/gc.c
@@ -424,7 +424,11 @@ next_step:
}
/*
- * Calculate start block index that this node page contains
+ * Calculate start block index indicating the given node offset.
+ * Be careful, caller should give this node offset only indicating direct node
+ * blocks. If any node offsets, which point the other types of node blocks such
+ * as indirect or double indirect node blocks, are given, it must be a caller's
+ * bug.
*/
block_t start_bidx_of_node(unsigned int node_ofs)
{
--
2.39.5