How Linux Allocates Heap Memory: Inside vm_area_struct and the brk System Call

This article explains the Linux kernel's heap memory allocation process, covering the vm_area_struct and mm_struct data structures, the brk system call implementation, and the page‑fault handling that maps virtual addresses to physical memory, while also mentioning other allocation mechanisms such as mmap and HugePages.

HeapLinux kernelPage Fault

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How Linux Allocates Heap Memory: Inside vm_area_struct and the brk System Call