xv6-riscv-kernel/param.h

#define NPROC        64  // maximum number of processes
#define NCPU          8  // maximum number of CPUs
#define NOFILE       16  // open files per process
#define NFILE       100  // open files per system
#define NINODE       50  // maximum number of active i-nodes
#define NDEV         10  // maximum major device number
#define ROOTDEV       1  // device number of file system root disk
#define MAXARG       32  // max exec arguments
#define MAXOPBLOCKS  10  // max # of blocks any FS op writes
#define LOGSIZE      (MAXOPBLOCKS*3)  // max data blocks in on-disk log
#define NBUF         (MAXOPBLOCKS*3)  // size of disk block cache
#define FSSIZE       1000  // size of file system in blocks
spacing 2006-09-06 19:06:10 +02:00			`#define NPROC 64 // maximum number of processes`
			`#define NCPU 8 // maximum number of CPUs`
struct fd -> struct file 2006-09-06 20:38:56 +02:00			`#define NOFILE 16 // open files per process`
			`#define NFILE 100 // open files per system`
add missing iput() at end of _namei() 2007-08-24 16:56:17 +02:00			`#define NINODE 50 // maximum number of active i-nodes`
spacing 2006-09-06 19:06:10 +02:00			`#define NDEV 10 // maximum major device number`
PDF at http://am.lcs.mit.edu/~rsc/xv6.pdf Various changes made while offline. + bwrite sector argument is redundant; use b->sector. + reformatting of files for nicer PDF page breaks + distinguish between locked, unlocked inodes in type signatures + change FD_FILE to FD_INODE + move userinit (nee proc0init) to proc.c + move ROOTDEV to param.h + always parenthesize sizeof argument 2007-08-22 08:01:32 +02:00			`#define ROOTDEV 1 // device number of file system root disk`
copyout() copies data to a va in a pagetable, for exec() &c usertest that passes too many arguments, break exec 2010-09-27 22:14:33 +02:00			`#define MAXARG 32 // max exec arguments`
i think this is a working concurrent logging scheme 2014-08-28 11:57:47 +02:00			`#define MAXOPBLOCKS 10 // max # of blocks any FS op writes`
Disentangle block size from the disk's sector size. Set block size to 1024 to show that they can be different. Clean up mkfs, simplifying specifying fs parameters, remove some redundancy between fs and mkfs, and fix disk layout bugs. Call blocks in the file system blocks instead of sectors. Passes usertests for different block sizes. 2015-04-03 14:22:02 +02:00			`#define LOGSIZE (MAXOPBLOCKS*3) // max data blocks in on-disk log`
xx 2014-08-28 23:04:47 +02:00			`#define NBUF (MAXOPBLOCKS*3) // size of disk block cache`
check blockno passed to idestart 2015-04-10 13:15:06 +02:00			`#define FSSIZE 1000 // size of file system in blocks`
Dirt simple logging Passes usertests and stressfs Seems to recover correctly in a number of simple cases 2011-07-28 02:35:46 +02:00