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
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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
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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.
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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.
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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.
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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
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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