Chapter 13. Mmap

The mmap system call allows a file (or parts of a file) to be mapped to memory. This allows the file content to be changed with a memory operation, avoiding system calls and input/output operations.
Always synchronize the changes to disk, and plan for a process hang that could result in data loss.


For more information, or for further reading, the following man page and book are related to the information given in this section:
  • mmap(2)
  • Linux System Programming by Robert Love