freebsd-skq/sys
tegge 78439a3a90 For low memory situations, non-VMIO buffers didnt't release pages back to
the system when brelse() was called with B_RELBUF set on the buffer.  This
could be a problem when the system was low on memory, had many buffers on
QUEUE_EMPTYKVA and started to traverse directories.  For each getnewbuf(),
pages were allocated from the system, driving the free reserve downwards.
For each brelse(), the system put the buffer on QUEUE_CLEAN, with B_INVAL
set.

This commit changes the semantics of B_RELBUF to also free pages from
non-VMIO buffers.

Reviewed by:	alc
2006-02-02 21:37:39 +00:00
..
alpha Move the old BSD4.3 tty compatibility from (!BURN_BRIDGES && COMPAT_43) 2006-01-10 09:19:10 +00:00
amd64 Call WITNESS_CHECK() in the page fault handler and immediately assume it 2006-01-27 22:22:10 +00:00
arm Try harder not to recurse. 2006-01-27 21:07:04 +00:00
boot Remove ELF dynamic tag definitions that aren't used. Ideally, 2006-01-18 18:49:25 +00:00
bsm Update src/sys/bsm include files to match OpenBSM (albeit with a 2006-02-01 19:54:22 +00:00
cam - Add a scsi_da.c and a umass.c quirk for Genesys 6-in-1 Card Reader. 2006-01-30 20:27:44 +00:00
coda - Reorder calls to vrele() after calls to vput() when the vrele is a 2006-02-01 00:25:26 +00:00
compat - vn_lock with LK_RETRY can not return an error. The code that handled this 2006-01-30 08:22:56 +00:00
conf MFi386: Enable the ce(4). 2006-02-02 11:14:13 +00:00
contrib fix a bug in the fragment cache (used for 'scrub fragment crop/drop-ovl', 2006-01-19 11:46:45 +00:00
crypto
ddb Fix -Wundef. 2005-12-04 02:12:43 +00:00
dev Remove use of inlines and use the functions as a library. 2006-02-02 21:31:34 +00:00
doc
fs - Reorder calls to vrele() after calls to vput() when the vrele is a 2006-02-01 00:25:26 +00:00
gdb
geom Remove trailing spaces. 2006-02-01 12:06:01 +00:00
gnu Add marker vnodes to ensure that all vnodes associated with the mount point are 2006-01-09 20:42:19 +00:00
i4b Fix -Wundef warnings found when compiling i386 LINT, GENERIC and 2005-12-05 11:58:35 +00:00
i386 Under verbose mode, correctly report L2 cache information 2006-02-02 12:44:09 +00:00
ia64 s/DT_IA64_PLT_RESERVE/DT_IA_64_PLT_RESERVE/ 2006-01-28 17:58:22 +00:00
isa Tweak how the MD code calls the fooclock() methods some. Instead of 2005-12-22 22:16:09 +00:00
isofs/cd9660 I ran into an nfs client panic a couple of times in a row over the 2006-01-17 17:29:03 +00:00
kern For low memory situations, non-VMIO buffers didnt't release pages back to 2006-02-02 21:37:39 +00:00
libkern Convert function declarations to ANSI C. 2006-01-22 00:46:40 +00:00
modules Attach ce(4) to the build. 2006-01-31 23:11:35 +00:00
net define lock.h before rwlock.h for DEBUG_LOCKS 2006-02-02 20:33:10 +00:00
net80211 s/w beacon miss facility; need to add knobs to fiddle with the settings 2006-01-23 21:02:49 +00:00
netatalk - Store pointer to the link-level address right in "struct ifnet" 2005-11-11 16:04:59 +00:00
netatm Convert to ANSI C function declarations. 2006-01-22 01:07:11 +00:00
netgraph Fix module from panic. 2006-01-29 22:06:51 +00:00
netinet Use PFIL_HOOKED macros in if_bridge and pass the right argument to 2006-02-02 16:41:20 +00:00
netinet6 make IPV6_V6ONLY socket option work for UDP as well. 2006-02-02 11:46:05 +00:00
netipsec Fix stack corruptions on amd64. 2006-01-21 10:44:34 +00:00
netipx In spx_attach() and spx_detach(), there is no need to check whether the 2006-01-14 00:05:44 +00:00
netkey Fix stack corruptions on amd64. 2006-01-21 10:44:34 +00:00
netnatm Use sparse initializers for "struct domain" and "struct protosw", 2005-11-09 13:29:16 +00:00
netncp In ncp_sysctl_connstat(), the SLIST_FOREACH() logic to check 'error' 2006-01-14 11:40:32 +00:00
netsmb Although we check the return value of copyin(9) while determaining how 2006-01-16 17:03:21 +00:00
nfs
nfs4client Use nfs4_disconnect for connections opened with nfs4_connect. 2006-01-19 22:48:31 +00:00
nfsclient Don't log an error on tcp connection reset, even if we don't get ECONNRESET. 2006-01-20 15:07:18 +00:00
nfsserver - Reorder calls to vrele() after calls to vput() when the vrele is a 2006-02-01 00:25:26 +00:00
opencrypto
pc98 MFi386: Enable the ce(4). 2006-02-02 11:14:13 +00:00
pccard I don't believe these are used at all, and can be safely removed 2006-01-15 06:49:28 +00:00
pci Don't add an agp child in vgapci's attach routine if the PCIY_AGP 2006-02-01 15:45:29 +00:00
posix4 mqueue.h has been superceded by sys/mqueue.h thanks to David Xu's work. 2005-11-28 02:58:30 +00:00
powerpc Move the old BSD4.3 tty compatibility from (!BURN_BRIDGES && COMPAT_43) 2006-01-10 09:19:10 +00:00
rpc Fix up some cut-n-paste damage and some out-of-date comments. 2006-01-20 15:20:41 +00:00
security Add new fields to process-related data structures: 2006-02-02 00:37:05 +00:00
sparc64 Hook up le(4) to the build. For now it's only added to the sparc64 GENERIC 2006-01-31 22:34:13 +00:00
sys Implement SIOCGIFCONF for 32bit binaries. 2006-02-02 19:58:37 +00:00
tools Fix a leftover "iwi_boot" string. 2006-01-30 16:32:08 +00:00
ufs - Reorder calls to vrele() after calls to vput() when the vrele is a 2006-02-01 00:25:26 +00:00
vm Use off_t for file size passed to vnode_create_vobject(). 2006-02-01 12:43:13 +00:00
Makefile add nfsclient/, nfs4client/, and rpc/ directories to the 2006-01-10 20:58:27 +00:00