Modify the min_heap_push() and min_heap_pop() to return a boolean value. They now return false when the operation fails and true when it succeeds.
Signed-off-by: Kuan-Wei Chiu <[email protected]> Reviewed-by: Ian Rogers <[email protected]> --- include/linux/min_heap.h | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/include/linux/min_heap.h b/include/linux/min_heap.h index 879a9d12e030..586965977104 100644 --- a/include/linux/min_heap.h +++ b/include/linux/min_heap.h @@ -130,18 +130,20 @@ void __min_heapify_all(struct __min_heap *heap, size_t elem_size, /* Remove minimum element from the heap, O(log2(nr)). */ static __always_inline -void __min_heap_pop(struct __min_heap *heap, size_t elem_size, +bool __min_heap_pop(struct __min_heap *heap, size_t elem_size, const struct min_heap_callbacks *func, void *args) { void *data = heap->data; if (WARN_ONCE(heap->nr <= 0, "Popping an empty heap")) - return; + return false; /* Place last element at the root (position 0) and then sift down. */ heap->nr--; memcpy(data, data + (heap->nr * elem_size), elem_size); __min_heapify(heap, 0, elem_size, func, args); + + return true; } #define min_heap_pop(_heap, _func, _args) \ @@ -167,7 +169,7 @@ void __min_heap_pop_push(struct __min_heap *heap, /* Push an element on to the heap, O(log2(nr)). */ static __always_inline -void __min_heap_push(struct __min_heap *heap, const void *element, size_t elem_size, +bool __min_heap_push(struct __min_heap *heap, const void *element, size_t elem_size, const struct min_heap_callbacks *func, void *args) { void *data = heap->data; @@ -175,7 +177,7 @@ void __min_heap_push(struct __min_heap *heap, const void *element, size_t elem_s int pos; if (WARN_ONCE(heap->nr >= heap->size, "Pushing on a full heap")) - return; + return false; /* Place at the end of data. */ pos = heap->nr; @@ -190,6 +192,8 @@ void __min_heap_push(struct __min_heap *heap, const void *element, size_t elem_s break; func->swp(parent, child, args); } + + return true; } #define min_heap_push(_heap, _element, _func, _args) \ -- 2.34.1
