What Is Memory Mapping in Linux?
Contents Memory Mapping Is One of the Most Interesting Features of a Unix System. from a Driver’s Point of View, the Memory-Mapping Facility Allows Direct...
Memory mapping is one of the most interesting features of a Unix system. From a driver’s point of view, the memory-mapping facility allows direct memory access to a user space device. To assign a mmap() operation to a driver, the mmap field of the device driver’s struct file_operations must be implemented.
What does memory mapping mean?
Memory-mapping is a mechanism that maps a portion of a file, or an entire file, on disk to a range of addresses within an application’s address space. The application can then access files on disk in the same way it accesses dynamic memory.
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What do you mean by mapping files into memory in Linux?
File mapping is the process of mapping the disk sectors of a file into the virtual memory space of a process. Once mapped, your app accesses the file as if it were entirely resident in memory.
Sarah Jenkins is a veteran tech journalist with over 12 years of experience covering artificial intelligence, mobile innovations, and digital ethics. Her insights have appeared in leading technology publications worldwide.
