commit e8de4340767dd002978c285e3adddaeda8ac652c
author Matthew Wilcox <mawilcox@microsoft.com> Wed Dec 14 15:09:31 2016 -0800
committer Linus Torvalds <torvalds@linux-foundation.org> Wed Dec 14 16:04:10 2016 -0800
tree 3e14e4a3b7b0874e4e824b7873558a1017d2e368
parent bbe9d71f2c545398987a6fea5090a6ca76f4a8dc

radix-tree: ensure counts are initialised

radix_tree_join() was freeing nodes with a non-zero ->exceptional count,
and radix_tree_split() wasn't zeroing ->exceptional when it allocated
the new node.  Fix this by making all callers of radix_tree_node_alloc()
pass in the new counts (and some other always-initialised fields), which
will prevent the problem recurring if in future we decide to do
something similar.

Link: http://lkml.kernel.org/r/1481667692-14500-3-git-send-email-mawilcox@linuxonhyperv.com
Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Konstantin Khlebnikov <koct9i@gmail.com>
Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>