radix-tree: fix sibling entry insertion
authorMatthew Wilcox <willy@linux.intel.com>
Sat, 21 May 2016 00:01:59 +0000 (17:01 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Sat, 21 May 2016 00:58:30 +0000 (17:58 -0700)
commit3b8c00f68405e9c037a6d8ae0d5d9da7f8a34e6a
tree2669fd1498aa7895abeb85452e82399b91ac78ea
parentdb050f2924fcf39428bdadf28970a32cfaf256ef
radix-tree: fix sibling entry insertion

The subtraction was the wrong way round, leading to undefined behaviour
(shift by an amount larger than the size of the type).

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Reviewed-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Cc: Konstantin Khlebnikov <koct9i@gmail.com>
Cc: Kirill Shutemov <kirill.shutemov@linux.intel.com>
Cc: Jan Kara <jack@suse.com>
Cc: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
lib/radix-tree.c