[PATCH 1/3] [v2] vm: add a syscall to map a process memory into a pipe

It is a hybrid of process_vm_readv() and vmsplice(). vmsplice can map memory from a current address space into a pipe. process_vm_readv can read memory of another process. A new system call can map memory of another process into a pipe. ssize_t process_vmsplice(pid_t pid, int fd, const struct

[PATCH 1/3] [v2] vm: add a syscall to map a process memory into a pipe

It is a hybrid of process_vm_readv() and vmsplice(). vmsplice can map memory from a current address space into a pipe. process_vm_readv can read memory of another process. A new system call can map memory of another process into a pipe. ssize_t process_vmsplice(pid_t pid, int fd, const struct