reiserfs: balance_leaf refactor, pull out balance_leaf_insert_left
This patch factors out a new balance_leaf_insert_left from the code in balance_leaf responsible for inserting new items into the node to the left of S[0] in the tree. It is not yet formatted correctly. Signed-off-by: Jeff Mahoney <jeffm@suse.com> Signed-off-by: Jan Kara <jack@suse.cz>
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