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authorRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>2009-09-14 01:20:35 +0900
committerRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>2009-11-03 12:32:03 +0900
commit05b4358ad564d7a6a51b3717afe771d36711e9c4 (patch)
treead8473aadd4a8f8e25aa40bf1bef8f16f7490d83
parentaeda7f6343e6375a832e52ff5ed389c115023ca5 (diff)
nilfs2: add zero-fill for new btree node buffers
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>
-rw-r--r--fs/nilfs2/btnode.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/nilfs2/btnode.c b/fs/nilfs2/btnode.c
index 435864ce06be..84c25382f8e3 100644
--- a/fs/nilfs2/btnode.c
+++ b/fs/nilfs2/btnode.c
@@ -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);