Re: [patch 2/9] lib: radix-tree: radix_tree_delete_item()

[Rik van Riel]

On 12/02/2013 02:21 PM, Johannes Weiner wrote:
> Provide a function that does not just delete an entry at a given
> index, but also allows passing in an expected item.  Delete only if
> that item is still located at the specified index.
> 
> This is handy when lockless tree traversals want to delete entries as
> well because they don't have to do an second, locked lookup to verify
> the slot has not changed under them before deleting the entry.
> 
> Signed-off-by: Johannes Weiner <hannes@xxxxxxxxxxx>
> Reviewed-by: Minchan Kim <minchan@xxxxxxxxxx>

Reviewed-by: Rik van Riel <riel@xxxxxxxxxx>

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