Memory-Mapped Files Memory-mapped file I/O allows file I/O to be treated as routine memory access by mapping a disk block to a page in memory.
{"Image DocumentName": "Memory-Mapped FilesMemory-mapped file I/O allows file I/O to be treated as routine memory access by mapping a disk block to a page in memory.", "Image ImageDescription": "A file is initially read using demand paging. A page-sized portion of the file is read from the file system into a physical page. Subsequent reads/writes to/from the file are treated as ordinary memory accesses. Simplifies file access by treating file I/O through memory rather than read() write() system calls. Also allows several processes to map the same file allowing the pages in memory to be shared. Operating System Concepts.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}