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| author | Matthew Wilcox <willy@infradead.org> | 2017-12-02 06:13:06 +0300 |
|---|---|---|
| committer | Matthew Wilcox <willy@infradead.org> | 2018-10-21 17:46:40 +0300 |
| commit | 7b8d046fba91d62beb8a8f78244aaa3c23a60cdd (patch) | |
| tree | 78f7d338690a358a6b67f5e153506feda90eb8bd /lib/radix-tree.c | |
| parent | 552446a4166189a8c2515571dd6e25fd64a2dc78 (diff) | |
| download | linux-7b8d046fba91d62beb8a8f78244aaa3c23a60cdd.tar.xz | |
shmem: Convert shmem_alloc_hugepage to XArray
xa_find() is a slightly easier API to use than
radix_tree_gang_lookup_slot() because it contains its own RCU locking.
This commit removes the last user of radix_tree_gang_lookup_slot()
so remove the function too.
Signed-off-by: Matthew Wilcox <willy@infradead.org>
Diffstat (limited to 'lib/radix-tree.c')
| -rw-r--r-- | lib/radix-tree.c | 44 |
1 files changed, 1 insertions, 43 deletions
diff --git a/lib/radix-tree.c b/lib/radix-tree.c index 8a58051eb5b3..2f9c0e45eeb7 100644 --- a/lib/radix-tree.c +++ b/lib/radix-tree.c @@ -1097,7 +1097,7 @@ void __radix_tree_replace(struct radix_tree_root *root, * @slot: pointer to slot * @item: new item to store in the slot. * - * For use with radix_tree_lookup_slot(), radix_tree_gang_lookup_slot(), + * For use with radix_tree_lookup_slot() and * radix_tree_gang_lookup_tag_slot(). Caller must hold tree write locked * across slot lookup and replacement. * @@ -1732,48 +1732,6 @@ radix_tree_gang_lookup(const struct radix_tree_root *root, void **results, EXPORT_SYMBOL(radix_tree_gang_lookup); /** - * radix_tree_gang_lookup_slot - perform multiple slot lookup on radix tree - * @root: radix tree root - * @results: where the results of the lookup are placed - * @indices: where their indices should be placed (but usually NULL) - * @first_index: start the lookup from this key - * @max_items: place up to this many items at *results - * - * Performs an index-ascending scan of the tree for present items. Places - * their slots at *@results and returns the number of items which were - * placed at *@results. - * - * The implementation is naive. - * - * Like radix_tree_gang_lookup as far as RCU and locking goes. Slots must - * be dereferenced with radix_tree_deref_slot, and if using only RCU - * protection, radix_tree_deref_slot may fail requiring a retry. - */ -unsigned int -radix_tree_gang_lookup_slot(const struct radix_tree_root *root, - void __rcu ***results, unsigned long *indices, - unsigned long first_index, unsigned int max_items) -{ - struct radix_tree_iter iter; - void __rcu **slot; - unsigned int ret = 0; - - if (unlikely(!max_items)) - return 0; - - radix_tree_for_each_slot(slot, root, &iter, first_index) { - results[ret] = slot; - if (indices) - indices[ret] = iter.index; - if (++ret == max_items) - break; - } - - return ret; -} -EXPORT_SYMBOL(radix_tree_gang_lookup_slot); - -/** * radix_tree_gang_lookup_tag - perform multiple lookup on a radix tree * based on a tag * @root: radix tree root |