From: Changman Lee <cm224.lee@samsung.com>
Date: Tue, 19 Feb 2013 22:47:06 +0000 (+0900)
Subject: f2fs: check the level before calling get_nid function
X-Git-Tag: next-20130312~73^2~4
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=f1277facbe76d3e79fb809f5a33ab4da23d1240c;p=karo-tx-linux.git

f2fs: check the level before calling get_nid function

The caller of get_nid should be careful not to put lower value than
NODE_DIR1_BLOCK in case of level is zero.

Signed-off-by: Changman Lee <cm224.lee@samsung.com>
Reviewed-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
---

diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index e88bf2b89000..e514af0b451c 100644
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -403,7 +403,8 @@ int get_dnode_of_data(struct dnode_of_data *dn, pgoff_t index, int mode)
 		return PTR_ERR(npage[0]);
 
 	parent = npage[0];
-	nids[1] = get_nid(parent, offset[0], true);
+	if (level != 0)
+		nids[1] = get_nid(parent, offset[0], true);
 	dn->inode_page = npage[0];
 	dn->inode_page_locked = true;