9 commits

Author	SHA1	Message	Date
Frans Kaashoek	1ddfbbb194	Revert "Introduce and use sleeplocks instead of BUSY flags" ... My changes have a race with re-used bufs and the code doesn't seem to get shorter Keep the changes that fixed ip->off race This reverts commit 3a5fa7ed90. Conflicts: defs.h file.c file.h	2011-08-29 17:18:40 -04:00
Frans Kaashoek	3a5fa7ed90	Introduce and use sleeplocks instead of BUSY flags ... Remove I_BUSY, B_BUSY, and intrans defs and usages One spinlock per buf to avoid ugly loop in bget fix race in filewrite (don't update f->off after releasing lock)	2011-08-26 10:08:29 -04:00
rsc	d003d232fc	Another attempt at the bio.c comment. ... Rename B_WRITE to B_DIRTY and then let ide.c maintain the B_VALID and B_DIRTY flags.	2007-08-27 14:09:30 +00:00
rtm	902b13f5d6	simplify ide queuing ... nits in comments	2007-08-24 19:32:36 +00:00
kaashoek	8e1d1ec934	some comment changes	2006-09-08 14:36:44 +00:00
rtm	cd93074e5b	LRU disk cache replacement	2006-08-12 22:34:13 +00:00
rtm	14938f9392	buffer cache, fifo replacement	2006-08-12 17:17:35 +00:00
rtm	4357207237	fix getblk to actually lock the block ... no more cons_put system calls usertests tests two processes writing files	2006-08-12 11:38:57 +00:00
rtm	11a9947f1a	bread ... iget mkfs makes a file system image put this in your .bochsrc: ata0-slave: type=disk, mode=flat, path="fs.img", cylinders=1024, heads=1, spt=1	2006-07-21 13:18:04 +00:00