Mention struct_size(), array_size() and array3_size() in the same place as kmalloc() and friends. Signed-off-by: Chris Packham <chris.packham@xxxxxxxxxxxxxxxxxxx> --- Documentation/core-api/memory-allocation.rst | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/Documentation/core-api/memory-allocation.rst b/Documentation/core-api/memory-allocation.rst index e59779aa7615..6a131767becd 100644 --- a/Documentation/core-api/memory-allocation.rst +++ b/Documentation/core-api/memory-allocation.rst @@ -91,7 +91,9 @@ The most straightforward way to allocate memory is to use a function from the :c:func:`kmalloc` family. And, to be on the safe side it's best to use routines that set memory to zero, like :c:func:`kzalloc`. If you need to allocate memory for an array, there -are :c:func:`kmalloc_array` and :c:func:`kcalloc` helpers. +are :c:func:`kmalloc_array` and :c:func:`kcalloc` helpers. The helpers +:c:func:`struct_size`, :c:func:`array_size` and :c:func:`array3_size` can be +used to safely calculate object sizes without overflowing. The maximal size of a chunk that can be allocated with `kmalloc` is limited. The actual limit depends on the hardware and the kernel -- 2.23.0
