Commit graph

24 commits

Author SHA1 Message Date
Robert Morris
12abb1a561 don't let dirty blocks be evicted from cache! 2011-10-14 10:23:23 -04:00
Austin Clements
e76dab4fd7 Put filewrite in its own column 2011-09-02 15:35:34 -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
Austin Clements
a7061b4f97 Style nits; indentation and tabs 2011-08-29 16:12:01 -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
Robert Morris
5053dd6a6d avoid deadlock by calling begin_trans() before locking any inodes 2011-08-15 12:44:20 -04:00
Robert Morris
2e59046362 log write() data
usertest for big write()s
push begin_trans/commit_trans down into syscalls
2011-08-12 09:25:39 -04:00
Frans Kaashoek
40889627ba Initial version of single-cpu xv6 with page tables 2010-07-02 14:51:53 -04:00
Frans Kaashoek
7d7465a858 8ae0 instead of 8e00, thanks yandong 2009-12-01 14:07:12 -05:00
Russ Cox
0aef891495 shuffle and tweak for formatting.
pdf has very good page breaks now.
would be a good copy for fall 2009.
2009-08-08 01:07:30 -07:00
rsc
34295f461a group locks into structs they protect.
few naming nits.
2009-05-31 05:12:21 +00:00
rsc
7f399ccaa4 use ftable like btable and itable 2009-05-31 02:07:26 +00:00
rsc
7834cca604 remove _ from pipe; be like file 2007-08-28 04:22:35 +00:00
rsc
558ab49f13 delete unnecessary #include lines 2007-08-27 23:26:33 +00:00
rsc
13491bf367 formatting shuffle 2007-08-27 14:37:13 +00:00
rsc
1ccff18b24 fileincref -> filedup (consistent with idup) 2007-08-27 14:35:09 +00:00
rsc
07090dd705 Remove struct uinode.
Remove type arg to mknod (assume T_DEV).
2007-08-24 20:54:23 +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
2186f88c21 formatting, cleanup 2007-08-14 19:41:56 +00:00
rsc
2cbb4b1842 stop using fd to name files 2006-09-08 13:44:42 +00:00
rsc
bb207a1d42 comments 2006-09-07 14:28:12 +00:00
rsc
224f6598c1 refactor syscall code 2006-09-07 14:13:26 +00:00
rsc
50e514be98 fd_* => file_* 2006-09-06 18:43:45 +00:00
rsc
9936bffa45 fd.* -> file.* 2006-09-06 18:40:28 +00:00
Renamed from fd.c (Browse further)