Practical File System Design with the Be File Sysytem (Dominic Giampaolo)
This book contains the following topics: Introduction to the BeOS and BFS, File systems, Data Structures of BFS, Attributes, Indexing, and Queries, Allocation Policies, Disk Block Cache, File System Performance, The Vnode Layer and User-Level API.
Author(s): Dominic Giampaolo
247 Pages 
xv6 a simple Unix like teaching operating system
This book contains below topics, Operating system interfaces, Operating system organization, Page tables, Traps and system calls, Page faults, Interrupts and device drivers, Locks, Scheduling, Sleep and wakeup, File system.
Author(s): Russ Cox, Frans Kaashoek, and Robert Morris, MIT CSAIL
116 Pages
Lecture Notes On Operating System by Sandeep
This note covers the following topics, Functions of Operating System, Evolution of OS, Operating System Services, ComputerSystem Architecture, Process Control Block, CPU Scheduling, Thread, Interprocess Communication, MessagePassing System, Process Synchronization, Petersons solution, Synchronization Hardware, Semaphores, The ReadersWriters Problem.
Author(s): A.Sandeep
92 Pages
