nilfs2: add zero-fill for new btree node buffers
authorRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Sun, 13 Sep 2009 16:20:35 +0000 (01:20 +0900)
committerRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Tue, 3 Nov 2009 03:32:03 +0000 (12:32 +0900)
Adds missing initialization of newly allocated b-tree node buffers.
This avoids garbage data to be mixed in b-tree node blocks.

Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
fs/nilfs2/btnode.c

index 435864ce06be5ca076bf06fce5165e9b6b8dbc51..84c25382f8e3b35b13f6509463aef70308bb3164 100644 (file)
@@ -87,6 +87,7 @@ int nilfs_btnode_submit_block(struct address_space *btnc, __u64 blocknr,
                        brelse(bh);
                        BUG();
                }
+               memset(bh->b_data, 0, 1 << inode->i_blkbits);
                bh->b_bdev = NILFS_I_NILFS(inode)->ns_bdev;
                bh->b_blocknr = blocknr;
                set_buffer_mapped(bh);