12abb1a561
don't let dirty blocks be evicted from cache!
2011-10-14 10:23:23 -04:00
a5fbfe418a
clarify some FS comments
2011-10-11 06:41:37 -04:00
9bb1e53df5
Add blank page to get our super FS spreads back
2011-09-02 15:14:06 -04:00
7fb21193b0
Remove comment debug prints from log.c; now fits nicely in a spread
2011-09-02 15:11:52 -04:00
ee1b33065c
Define struct log separately from log to avoid confusing column breaker
2011-09-02 15:08:35 -04:00
a14c96f825
Comment balance
2011-09-02 15:08:13 -04:00
436f657e2d
Remove unused headers from log.c
2011-09-02 15:07:56 -04:00
e25b74ca80
Fix layout issues for printed version
2011-09-01 10:25:20 -04:00
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
2011-08-29 17:18:40 -04:00
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
843eecfcd0
Only commit log to disk if something was written in to it.
...
Without this, every write to the console results in log writes.
2011-08-15 14:12:35 -04:00
5053dd6a6d
avoid deadlock by calling begin_trans() before locking any inodes
2011-08-15 12:44:20 -04:00
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
13a96baefc
Dirt simple logging
...
Passes usertests and stressfs
Seems to recover correctly in a number of simple cases
2011-07-27 20:35:46 -04:00
Robert Morris
Austin Clements
Frans Kaashoek
Frans Kaashoek