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-rw-r--r--lib/radix-tree.c11
1 files changed, 1 insertions, 10 deletions
diff --git a/lib/radix-tree.c b/lib/radix-tree.c
index a9e41aed6de4..bc03ecc4dfd2 100644
--- a/lib/radix-tree.c
+++ b/lib/radix-tree.c
@@ -120,7 +120,7 @@ bool is_sibling_entry(const struct radix_tree_node *parent, void *node)
static inline unsigned long
get_slot_offset(const struct radix_tree_node *parent, void __rcu **slot)
{
- return slot - parent->slots;
+ return parent ? slot - parent->slots : 0;
}
static unsigned int radix_tree_descend(const struct radix_tree_node *parent,
@@ -2106,14 +2106,6 @@ void idr_preload(gfp_t gfp_mask)
}
EXPORT_SYMBOL(idr_preload);
-/**
- * ida_pre_get - reserve resources for ida allocation
- * @ida: ida handle
- * @gfp: memory allocation flags
- *
- * This function should be called before calling ida_get_new_above(). If it
- * is unable to allocate memory, it will return %0. On success, it returns %1.
- */
int ida_pre_get(struct ida *ida, gfp_t gfp)
{
/*
@@ -2134,7 +2126,6 @@ int ida_pre_get(struct ida *ida, gfp_t gfp)
return 1;
}
-EXPORT_SYMBOL(ida_pre_get);
void __rcu **idr_get_free(struct radix_tree_root *root,
struct radix_tree_iter *iter, gfp_t gfp,