xv6 RISC-V source code

Publisher: MIT PDOS xv6 project.

Online text: raw.githubusercontent.com/mit-pdos/xv6-riscv/riscv/kernel/bio.c

Cited passages: bget, bread and brelse: key reservation, validity, reference protection and recency.

Online text: raw.githubusercontent.com/mit-pdos/xv6-riscv/riscv/kernel/buf.h

Cited passages: struct buf: valid, disk and refcnt fields.

Online text: raw.githubusercontent.com/mit-pdos/xv6-riscv/riscv/kernel/log.c

Cited passages: log_write, write_log, commit and install_trans: journal retention and installation.

Online text: raw.githubusercontent.com/mit-pdos/xv6-riscv/riscv/kernel/vm.c

Cited passages: walk(): three-level index comment and alloc-controlled creation; uvmcreate(): root allocation and initialization.