ilo-pona/xv6-65oo2
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43 commits

Author SHA1 Message Date
Frans Kaashoek 7894fcd217 Remove trailing white space with: 
for f in *.{h,c}; do sed -i .sed 's/[[:blank:]]*$//' $f; done
(Thanks to Nicolás Wolovick)
 2016-08-25 09:13:00 -04:00
Frans Kaashoek c24ac5d763 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 08:22:02 -04:00
Frans Kaashoek 74c77da6f8 Nice layout for a printout of the code 2014-08-29 17:06:49 -04:00
Robert Morris 8d618cab78 Merge branch 'master' of git+ssh://amsterdam.csail.mit.edu/home/am0/6.828/xv6 2014-08-28 16:13:58 -04:00
Robert Morris 48aa917403 i think this is a working concurrent logging scheme 2014-08-28 05:57:47 -04:00
Robert Morris 12eeefc72d comments 2014-08-27 14:14:52 -04:00
Robert Morris 12abb1a561 don't let dirty blocks be evicted from cache! 2011-10-14 10:23:23 -04:00
Robert Morris a5fbfe418a clarify some FS comments 2011-10-11 06:41:37 -04:00
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
Frans Kaashoek af03ab142d a few nits 
passes all tests on two-processor smp
 2010-07-23 12:52:50 -04:00
Frans Kaashoek 7d7465a858 8ae0 instead of 8e00, thanks yandong 2009-12-01 14:07:12 -05:00
rsc 34295f461a group locks into structs they protect. 
few naming nits.
 2009-05-31 05:12:21 +00:00
rsc 0badeaa29f bio.c: use struct like icache does 2009-05-31 01:29:17 +00:00
rsc 0ca9ca0c55 slight rearrangement; sleep on b not buf. 2009-05-31 00:23:00 +00:00
rsc 2157576107 be consistent: no underscores in function names 2009-03-08 22:07:13 +00:00
rsc 6eed1ee9b0 formatting 2007-08-28 05:00:53 +00:00
rsc 558ab49f13 delete unnecessary #include lines 2007-08-27 23:26:33 +00:00
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
rsc 872a63e104 nits 2007-08-24 21:14:58 +00:00
rsc 4d39b63388 nits 2007-08-24 19:46:19 +00:00
rtm 902b13f5d6 simplify ide queuing 
nits in comments
 2007-08-24 19:32:36 +00:00
rsc eaea18cb9c 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 06:01:32 +00:00
rsc 0655445ba9 cleanup loop 2007-08-14 19:42:14 +00:00
rsc 3f98d050e1 refactor bget to be more like iget - make it clear that sleep loops 2007-08-08 09:50:26 +00:00
rsc 95edc8921f debugging help 2006-09-07 16:54:28 +00:00
rsc 19297caf0d fix ide, pit interfaces 2006-09-07 15:29:54 +00:00
rsc 7a054598fa fix build bug 2006-09-07 14:39:05 +00:00
rsc bb207a1d42 comments 2006-09-07 14:28:12 +00:00
rsc 0cfc7290e8 wrap long lines 2006-09-06 19:08:14 +00:00
rsc db8fb62e4d for vs while 2006-09-06 18:47:51 +00:00
rsc 9e9bcaf143 standardize various * conventions 2006-09-06 17:27:19 +00:00
rtm 2aa4c3bc29 complain if no disk 1 
lots of cleanup
 2006-08-30 18:55:06 +00:00
rtm 05e975511b zero out all of dirent.name when creating 
don't increase length of directory
 2006-08-12 22:44:26 +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 5be0039ce9 interrupts could be recursive since lapic_eoi() called before rti 
so fast interrupts overflow the kernel stack
fix: cli() before lapic_eoi()
 2006-08-10 22:08:14 +00:00
kaashoek 104207726b bwrite 2006-08-07 01:38:46 +00:00
kaashoek 8ec6530fee generalize async read to support write too 2006-08-06 20:28:15 +00:00
kaashoek c8b29f6d03 better interrupt plan---this one appears to work 
ioapic
 2006-08-04 18:12:31 +00:00
rtm 32630628a9 open() 2006-07-29 09:35:02 +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