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| -rw-r--r-- | Documentation/process/deprecated.rst | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/Documentation/process/deprecated.rst b/Documentation/process/deprecated.rst index 70720f00b9aa..ff71d802b53d 100644 --- a/Documentation/process/deprecated.rst +++ b/Documentation/process/deprecated.rst @@ -304,7 +304,8 @@ to allocate for a structure containing an array of this kind as a member:: In the example above, we had to remember to calculate ``count - 1`` when using the struct_size() helper, otherwise we would have --unintentionally-- allocated memory for one too many ``items`` objects. The cleanest and least error-prone way -to implement this is through the use of a `flexible array member`:: +to implement this is through the use of a `flexible array member`, together with +struct_size() and flex_array_size() helpers:: struct something { size_t count; @@ -316,5 +317,4 @@ to implement this is through the use of a `flexible array member`:: instance = kmalloc(struct_size(instance, items, count), GFP_KERNEL); instance->count = count; - size = sizeof(instance->items[0]) * instance->count; - memcpy(instance->items, source, size); + memcpy(instance->items, source, flex_array_size(instance, items, instance->count)); |