FILE ACCESS METHOD AND RELATED DEVICE

摘要

Embodiments of the application provide a file access method. A computing node receives a file open request that carries a file identifier. The computing node obtains an index node of a file that is identified by the file identifier. The computing node further obtains, based on the index node, a physical address space of a memory area in a file storage area, in which the file is stored. The computing node allocates a virtual address space to the file, and recodes a virtual-physical address mapping relationship by using a memory page table. The virtual-physical address mapping relationship includes a mapping relationship between the virtual address space and the physical address space.

主权项

1. A file access method performed by a processor of a computing node, wherein the computing node is controlled by an operating system and one or more processes are running in the computing node, the method comprising:
receiving a file open request that carries a file identifier; obtaining an index node of a file identified by the file identifier, and, based on the index node, obtaining a physical address space, wherein the file is stored in the physical address space in a file storage area of a memory of the computing node; allocating a virtual address space to the file; and recording a virtual-physical address mapping relationship in a memory page table that is stored in a work process area of the memory, wherein the virtual-physical address mapping relationship is a mapping relationship between the virtual address space and the physical address space.