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a73af1b81d
freebsd-skq/sys
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tegge a73af1b81d Don't allow pagedaemon to skip pages while scanning PQ_ACTIVE or PQ_INACTIVE 
due to the vm object being locked.

When a process writes large amounts of data to a file, the vm object associated
with that file can contain most of the physical pages on the machine.  If the
process is preempted while holding the lock on the vm object, pagedaemon would
be able to move very few pages from PQ_INACTIVE to PQ_CACHE or from PQ_ACTIVE
to PQ_INACTIVE, resulting in unlimited cleaning of dirty pages belonging to
other vm objects.

Temporarily unlock the page queues lock while locking vm objects to avoid lock
order violation.  Detect and handle relevant page queue changes.

This change depends on both the lock portion of struct vm_object and normal
struct vm_page being type stable.

Reviewed by:	alc
2005-08-10 00:17:36 +00:00
..
alpha Add hints for uart(4). These are the same as for sio(4) and make it 2005-08-06 19:24:22 +00:00
amd64 When support for 2MB/4MB pages was added in revision 1.148 an error was 2005-08-07 22:00:47 +00:00
arm - Add support for saving stack traces and displaying them via printf(9) 2005-08-03 04:27:40 +00:00
boot Add if_arl_load, if_axe_load, if_aue_load, if_cs_load, if_cue_load, 2005-08-07 09:41:53 +00:00
bsm For consistency with more system include files, add a trailing '_' to 2005-05-29 16:11:34 +00:00
cam Merge the dev_clone and dev_clone_cred event handlers into a single 2005-08-08 19:55:32 +00:00
coda Merge the dev_clone and dev_clone_cred event handlers into a single 2005-08-08 19:55:32 +00:00
compat Propagate rename of IFF_OACTIVE and IFF_RUNNING to IFF_DRV_OACTIVE and 2005-08-09 10:20:02 +00:00
conf Add strcasecmp() and strncasecmp() to libkern and connect to the build. 2005-08-08 18:31:13 +00:00
contrib Wrap the new world order in __FreeBSD__ to ease future imports. 2005-08-09 11:59:02 +00:00
crypto
ddb Implement functions calls from within DDB on ia64. On ia64 a function 2005-07-02 23:52:37 +00:00
dev Call tulip_start() rather than tulip_ifstart() from the interrupt handler 2005-08-09 21:53:26 +00:00
doc
fs Merge the dev_clone and dev_clone_cred event handlers into a single 2005-08-08 19:55:32 +00:00
gdb
geom Be case-insensitive when dealing with algorithm names. 2005-08-08 19:40:38 +00:00
gnu Repair this: 2005-07-09 18:30:31 +00:00
i4b Propagate rename of IFF_OACTIVE and IFF_RUNNING to IFF_DRV_OACTIVE and 2005-08-09 10:20:02 +00:00
i386 Propagate rename of IFF_OACTIVE and IFF_RUNNING to IFF_DRV_OACTIVE and 2005-08-09 10:20:02 +00:00
ia64 Improve SMP support: 2005-08-06 20:28:19 +00:00
isa Add pnp and location info for the ISA bus. The pnp info is the 2005-08-01 07:03:10 +00:00
isofs/cd9660
kern Add an order between UDP inpcb locks and the IPv4 multicast address 2005-08-09 13:27:50 +00:00
libkern Ha! This is a very interesting bug. 2005-08-08 19:38:00 +00:00
modules Connect GEOM_ELI class to the build. 2005-07-27 21:47:55 +00:00
net For each interface flag, indicate whether or not it is owned by the 2005-08-09 12:56:20 +00:00
net80211 Propagate rename of IFF_OACTIVE and IFF_RUNNING to IFF_DRV_OACTIVE and 2005-08-09 10:20:02 +00:00
netatalk Eliminate MAC entry point mac_create_mbuf_from_mbuf(), which is 2005-07-05 23:39:51 +00:00
netatm Propagate rename of IFF_OACTIVE and IFF_RUNNING to IFF_DRV_OACTIVE and 2005-08-09 10:20:02 +00:00
netgraph Propagate rename of IFF_OACTIVE and IFF_RUNNING to IFF_DRV_OACTIVE and 2005-08-09 10:20:02 +00:00
netinet Add helper function ip_findmoptions(), which accepts an inpcb, and attempts 2005-08-09 17:19:21 +00:00
netinet6 corrected the fourth argument to ni6_addrs(). 2005-08-09 12:24:11 +00:00
netipsec Correct typo in a comment describing vshiftl(). 2005-06-02 23:56:10 +00:00
netipx Stop embedding struct ifnet at the top of driver softcs. Instead the 2005-06-10 16:49:24 +00:00
netkey fix build without option INET6. 2005-07-30 20:10:31 +00:00
netnatm Propagate rename of IFF_OACTIVE and IFF_RUNNING to IFF_DRV_OACTIVE and 2005-08-09 10:20:02 +00:00
netncp Change API of mb_copy_t in libmchain so that netsmb can handle 2005-07-29 13:22:37 +00:00
netsmb Merge the dev_clone and dev_clone_cred event handlers into a single 2005-08-08 19:55:32 +00:00
nfs Fixes for NFS crashes on architectures that require strict alignment. 2005-07-14 20:08:27 +00:00
nfs4client
nfsclient FIx for a bug in the change that made nfs_timer() MPSAFE. We need to 2005-07-27 15:06:26 +00:00
nfsserver
opencrypto malloc.h relies on param.h for a definition of MAXCPU. I guess that there is 2005-05-30 05:01:44 +00:00
pc98 MFi386: revision 1.1204. 2005-07-21 11:13:12 +00:00
pccard
pci Call tulip_start() rather than tulip_ifstart() from the interrupt handler 2005-08-09 21:53:26 +00:00
posix4
powerpc - Add support for saving stack traces and displaying them via printf(9) 2005-08-03 04:27:40 +00:00
rpc
security Insert a series of place-holder function pointers in mac_policy.h for 2005-08-08 16:09:33 +00:00
sparc64 The system tick _compare_ register of USIII CPUs and up is ASR25, not 2005-08-07 13:21:00 +00:00
sys Merge the dev_clone and dev_clone_cred event handlers into a single 2005-08-08 19:55:32 +00:00
tools Allow EVFILT_VNODE events to work on every filesystem type, not just 2005-06-09 20:20:31 +00:00
ufs Delay freeing disk space for file system blocks until all dirty buffers 2005-07-31 20:24:14 +00:00
vm Don't allow pagedaemon to skip pages while scanning PQ_ACTIVE or PQ_INACTIVE 2005-08-10 00:17:36 +00:00
Makefile