Generic operations handled by VFS

• VFS code handles:

• • sys_open() and related functions - path lookup, crossing mounts, etc.
  • sys_read(), sys_write(), sys_mmap(), aio, and all other system-call interface functions
  • file descriptor operations (closing, duplicating, etc.)
  • mounting filesystems

• Most operations are done by doing generic work while delegating filesystem-specific functions to filesystem defined hooks (file/inode/super_block/dentry/... )