Poul-Henning Kamp 3432e4fd03 malloc(9) with M_NOWAIT seems to return NULL a lot more than I would have ... expected under -current. This is a problem for GEOM because the up/down threads cannot sleep waiting for memory to become free. The reason they cannot sleep is that paging things out to disk may be the only way we can clear up some RAM. Nice catch-22 there. Implement a rudimentary ENOMEM recovery strategy: If an I/O request fails with an error code of ENOMEM, schedule it for a retry, and tell the down-thread to sleep hz/10 to get other parts of the system a chance to free up some memory, in particular the up-path in GEOM. All caches should probably start to monitor malloc(9) failures using the new malloc_last_fail() function, and release when it indicates congestion. Sponsored by: DARPA & NAI Labs.		2002-11-02 11:08:07 +00:00
..
alpha	- Enable the use of UMA_MD_PAGE_ALLOC on alpha.	2002-11-01 03:34:51 +00:00
amd64	Note that the sched_lock protects md_ldt of struct mdproc.	2002-10-25 20:06:16 +00:00
arm	Add standards visibility conditionals. Change any uses of sigset_t to	2002-10-13 00:31:46 +00:00
boot	Fix indentation of comments.	2002-11-02 08:49:51 +00:00
cam	* Add CDRIOC{READ,WRITE}SPEED ioctls to cd(4). Units are in KB/sec.	2002-10-18 22:03:39 +00:00
coda	Back our kernel support for reliable signal queues.	2002-10-01 17:15:53 +00:00
compat	Remove the process state PRS_WAIT.	2002-10-21 22:27:36 +00:00
conf	Make geom_mbr.c optional on PC98, use GEOM_MBR option to include it.	2002-10-26 20:17:59 +00:00
contrib	Replace aux mbufs with packet tags:	2002-10-16 01:54:46 +00:00
crypto	Make this compilable from userland as well.	2002-11-01 08:56:39 +00:00
ddb	- Rename the DDB specific %z printf format to %y.	2002-10-25 19:41:32 +00:00
dev	Merge PC98 changes.	2002-11-02 04:18:10 +00:00
fs	Put a KASSERT in specfs::strategy() to check that the incoming buffer	2002-11-01 15:32:12 +00:00
geom	malloc(9) with M_NOWAIT seems to return NULL a lot more than I would have	2002-11-02 11:08:07 +00:00
gnu	MFufs 1.33:	2002-10-18 21:41:41 +00:00
i4b	Don't include the depricated "bpf.h" and always compile in bpf support	2002-10-21 05:05:43 +00:00
i386	bzero() the sigframe before we fill it. This was not done at all in	2002-11-02 07:41:04 +00:00
ia64	Don't pass the return address to exception_save in register b0. Use	2002-10-30 07:58:11 +00:00
isa	Fix compile with options SC_NO_SUSPEND_VTYSWITCH.	2002-10-17 16:09:13 +00:00
isofs/cd9660	Fix comments and one resulting code confusion about the type of the	2002-10-16 08:04:11 +00:00
kern	Revert the change in revision 1.77 of kern/uipc_socket2.c. It is causing	2002-11-02 05:14:31 +00:00
libkern	Slight overhaul of arc4random() and friends.	2002-10-11 13:13:08 +00:00
modules	Add the netgraph 'source' module.	2002-10-31 23:03:09 +00:00
net	Don't check IFF_RUNNING in previous change.	2002-10-25 17:31:03 +00:00
netatalk	Add more ethernet types and move AppleTalk types into proper location.	2002-09-06 17:02:29 +00:00
netatm	Add a field to struct cmn_unit to hold a pointer to the driver's softc.	2002-10-01 22:04:31 +00:00
netgraph	The easy part of converting the ng_source node to -current.	2002-11-02 02:29:43 +00:00
netinet	- Consistently update snd_wl1, snd_wl2, and rcv_up in the header	2002-10-31 23:24:13 +00:00
netinet6	plugged memory leakage in some erroneous cases	2002-10-31 19:45:48 +00:00
netipsec	"Fast IPsec": this is an experimental IPsec implementation that is derived	2002-10-16 02:10:08 +00:00
netipx	Replace aux mbufs with packet tags:	2002-10-16 01:54:46 +00:00
netkey	- fixed the order of searching SA table for packets.	2002-07-10 16:39:38 +00:00
netnatm	Be consistent about functions being static.	2002-10-16 09:19:17 +00:00
netncp	Change iov_base's type from char *' to the standard void *'. All	2002-10-11 14:58:34 +00:00
netns	Use m_length() instead of home-rolled versions.	2002-09-18 19:44:14 +00:00
netsmb	Some kernel threads try to do significant work, and the default KSTACK_PAGES	2002-10-02 07:44:29 +00:00
nfs	Change iov_base's type from char *' to the standard void *'. All	2002-10-11 14:58:34 +00:00
nfsclient	Don't examine an un-initialized variable.	2002-10-20 21:52:05 +00:00
nfsserver	- Introduce a new macro, since that's what nfs loves, called	2002-10-31 22:35:03 +00:00
opencrypto	Module-ize the 'core' crypto stuff. This may still need to be compiled	2002-10-16 14:31:34 +00:00
pc98	Enable GEOM by default.	2002-10-31 12:14:05 +00:00
pccard	MFp4: Comment about not assuming INTA# for 6729	2002-10-07 07:02:48 +00:00
pci	Don't take out the rl_mtx lock in the attach routine. The only way	2002-10-29 19:02:19 +00:00
posix4	Change the way support for asynchronous I/O is indicated to applications	2002-10-27 18:07:41 +00:00
powerpc	Split 4.x and 5.x signal handling so that we can keep 4.x signal	2002-10-25 19:10:58 +00:00
rpc
security	Add MAC checks for various kenv() operations: dump, get, set, unset,	2002-11-01 20:46:53 +00:00
sparc64	Don peril sensitive sun glasses and change the default system call vector	2002-10-27 17:22:43 +00:00
sys	Revert the change in revision 1.77 of kern/uipc_socket2.c. It is causing	2002-11-02 05:14:31 +00:00
tools	- Move ASSERT_VOP_*LOCK* functionality into functions in vfs_subr.c	2002-09-26 04:48:44 +00:00
ufs	Implement the new 1003.1-2001 pathconf() keys, including the Advisory	2002-10-27 18:09:49 +00:00
vm	- Add support for machine dependant page allocation routines. MD code	2002-11-01 01:01:27 +00:00
Makefile