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authorMatthew Wilcox <willy@infradead.org>2017-12-01 22:13:06 -0500
committerMatthew Wilcox <willy@infradead.org>2018-10-21 10:46:40 -0400
commit7b8d046fba91d62beb8a8f78244aaa3c23a60cdd (patch)
tree78f7d338690a358a6b67f5e153506feda90eb8bd /lib
parent552446a4166189a8c2515571dd6e25fd64a2dc78 (diff)
downloadlinux-7b8d046fba91d62beb8a8f78244aaa3c23a60cdd.tar.gz
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')
-rw-r--r--lib/radix-tree.c44
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