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| author | Liu Bo <bo.li.liu@oracle.com> | 2016-09-23 13:44:44 -0700 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2016-09-26 19:37:06 +0200 |
| commit | 851cd173f06045816528176001cf82948282029c (patch) | |
| tree | 280bf393ed2e9f10130fd8eea3bc08e3c601d083 /fs/btrfs/ctree.c | |
| parent | 0f5053eb90f58c619885eac2757ccdc5eccd9046 (diff) | |
| download | linux-stable-851cd173f06045816528176001cf82948282029c.tar.gz linux-stable-851cd173f06045816528176001cf82948282029c.tar.bz2 linux-stable-851cd173f06045816528176001cf82948282029c.zip | |
Btrfs: memset to avoid stale content in btree leaf
This is an additional patch to
"Btrfs: memset to avoid stale content in btree node block".
This uses memset to initialize the unused space in a leaf to avoid
potential stale content, which may be incurred by pushing items
between sibling leaves.
Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/ctree.c')
| -rw-r--r-- | fs/btrfs/ctree.c | 14 |
1 files changed, 0 insertions, 14 deletions
diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c index 284cc9d6ecd7..8f67a14fa974 100644 --- a/fs/btrfs/ctree.c +++ b/fs/btrfs/ctree.c @@ -1715,20 +1715,6 @@ int btrfs_realloc_node(struct btrfs_trans_handle *trans, return err; } -/* - * The leaf data grows from end-to-front in the node. - * this returns the address of the start of the last item, - * which is the stop of the leaf data stack - */ -static inline unsigned int leaf_data_end(struct btrfs_root *root, - struct extent_buffer *leaf) -{ - u32 nr = btrfs_header_nritems(leaf); - if (nr == 0) - return BTRFS_LEAF_DATA_SIZE(root); - return btrfs_item_offset_nr(leaf, nr - 1); -} - /* * search for key in the extent_buffer. The items start at offset p, |