[31/44] ext3: Always set dx_nodes fake_dirent explicitly.

From: Greg KH
Date: Mon Mar 21 2011 - 19:57:05 EST

2.6.32-longterm review patch. If anyone has any objections, please let us know.


From: Eric Sandeen <sandeen@xxxxxxxxxx>

commit d7433142b63d727b5a217c37b1a1468b116a9771 upstream.

(crossport of 1f7bebb9e911d870fa8f997ddff838e82b5715ea
by Andreas Schlick <schlick@xxxxxxxxxxx>)

When ext3_dx_add_entry() has to split an index node, it has to ensure that
name_len of dx_node's fake_dirent is also zero, because otherwise e2fsck
won't recognise it as an intermediate htree node and consider the htree to
be corrupted.

Signed-off-by: Eric Sandeen <sandeen@xxxxxxxxxx>
Signed-off-by: Jan Kara <jack@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>

fs/ext3/namei.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/fs/ext3/namei.c
+++ b/fs/ext3/namei.c
@@ -1550,8 +1550,8 @@ static int ext3_dx_add_entry(handle_t *h
goto cleanup;
node2 = (struct dx_node *)(bh2->b_data);
entries2 = node2->entries;
+ memset(&node2->fake, 0, sizeof(struct fake_dirent));
node2->fake.rec_len = ext3_rec_len_to_disk(sb->s_blocksize);
- node2->fake.inode = 0;
BUFFER_TRACE(frame->bh, "get_write_access");
err = ext3_journal_get_write_access(handle, frame->bh);
if (err)

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