maple_tree: remove maple_big_node.parent

Patch series "Reduce the space to be cleared for maple_big_node", v2.

Found current code may clear maple_big_node redundantly.

First we define a field parent, which is never used.  After removing this,
we reduce the size of memory to be cleared by memset.

Then mast_fill_bnode() clears part of the structure twice, since slot and
gap share some space.  By clearing the whole structure, we can avoid this.


This patch (of 2):

The member parent of maple_big_node is never used.

Let's remove it which could reduce the number of space to be cleared on
memset.

Link: https://lkml.kernel.org/r/[email protected]
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Wei Yang <[email protected]>
Reviewed-by: Liam R. Howlett <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>

0 files changed, 0 insertions, 0 deletions