rtm
211ff0c67e
namei returns locked parent dir inode for create / unlink
...
don't hold fd table lock across idecref() (latter does block i/o)
idecref calls iput() in case last ref -> freeing inode
dir size is 512 * # blocks, so readi/writei &c work
unlink deletes dirent even if ip->nlink > 0
2006-08-13 12:22:44 +00:00
rtm
9e5970d596
link()
2006-08-13 02:12:44 +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
7ce01cf9be
mknod set nlink = 1
...
usertests for concurrent create/delete, and read() after unlink()
2006-08-12 16:47:48 +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
8455980b27
exec arguments
2006-07-28 22:33:07 +00:00
rsc
c54c79267f
nitpicks
2006-07-17 01:25:22 +00:00
rsc
9b37d1bfaa
Add user.h for prototypes.
...
Add cons_puts for cleaner output.
2006-07-16 15:36:31 +00:00
rtm
46bbd72f3e
no more recursive locks
...
wakeup1() assumes you hold proc_table_lock
sleep(chan, lock) provides atomic sleep-and-release to wait for condition
ugly code in swtch/scheduler to implement new sleep
fix lots of bugs in pipes, wait, and exit
fix bugs if timer interrupt goes off in schedule()
console locks per line, not per byte
2006-07-15 12:03:57 +00:00
rtm
6eb6f10c56
passes both usertests
...
exit had acquire where I meant release
swtch now checks that you hold no locks
2006-07-12 15:35:33 +00:00
rtm
664324745e
cvs add spinlock.h
...
fix race in schedule()
2006-07-12 09:10:25 +00:00
rtm
4e8f237be8
no more big kernel lock
...
succeeds at usertests.c pipe test
2006-07-12 01:48:35 +00:00
rtm
b41b38d0da
give each cpu its own clock, so that preemption works on cpu 1
2006-07-11 18:45:27 +00:00
rtm
b548df152b
pre-empt both user and kernel, in clock interrupt
...
usertest.c tests pre-emption
kill()
2006-07-11 17:39:45 +00:00
rtm
8b4e2a08fe
swtch saves callee-saved registers
...
swtch idles on per-CPU stack, not on calling process's stack
fix pipe bugs
usertest.c tests pipes, fork, exit, close
2006-07-01 21:26:01 +00:00
rtm
c41f1de5d4
file descriptors
...
pipes
2006-06-27 14:35:53 +00:00
