vmalloc

Deepin Linux

Nov 20, 2023 · Fundamentals

Linux Memory Allocation Mechanisms: malloc, kmalloc, vmalloc, mmap, and Slab

This article explains Linux's flexible memory allocation system, covering user‑space malloc, kernel‑space kmalloc, vmalloc for large buffers, mmap for file and anonymous mappings, page allocation functions, the slab allocator, and memory pools, with detailed code examples and operational insights.