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4c74acf76a
freebsd-nq/sys
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Konstantin Belousov 4c74acf76a When vm_fault_copy_entry() is called from vm_map_protect() for a wired 
entry and performs the upgrade of the entry permissions from read-only
to read-write, we must allow to search for the source pages in the
backing object, like we do in the case of forking the read-only wired
entry. For the fork case, the behaviour is allowed by src_readonly
boolean, which in fact is only used to assert that read-write case
provides all source pages in the top-level object.

Eliminate the src_readonly variable.  Allow for the copy loop to look
into the backing objects, add explicit asserts to ensure that only
read-only and upgrade case actually does.

Expand comments. Change the panic call into assert.

Reported by:	markj
Tested by:	markj, pho (previous version)
Reviewed by:	alc
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
2014-04-27 05:19:01 +00:00
..
amd64 Don't need this now. VT does the same thing, but better. 2014-04-27 02:28:32 +00:00
arm Provide a proper armv7 implementation of icache_sync_all rather than 2014-04-27 00:46:01 +00:00
boot Revert to FAT12. This file system is apparently too small for FAT32, even 2014-04-27 00:45:08 +00:00
bsm IFp4 @1192291: 2014-04-07 20:44:00 +00:00
cam Remove limits on size of READ/WRITE operations. 2014-04-24 16:19:49 +00:00
cddl Eliminate duplicate checks in vdev_geom_io_intr error handling 2014-04-24 15:36:00 +00:00
compat In freebsd32_sendmsg(), replace the call to sockargs() followed by a 2014-04-05 18:56:01 +00:00
conf Add preliminary support for the Realtek RTL8188EUS and RTL8188ETV chipsets. 2014-04-25 08:01:22 +00:00
contrib Add preliminary support for the Realtek RTL8188EUS and RTL8188ETV chipsets. 2014-04-25 08:01:22 +00:00
crypto NO_MAN= has been deprecated in favor of MAN= for some time, go ahead 2014-04-13 05:21:56 +00:00
ddb ddb: Minor style cleanups. 2014-03-31 16:37:41 +00:00
dev Increase the maximum framebuffer size to more reasonable values reflecting 2014-04-27 02:20:51 +00:00
fs The PR reported that the old NFS server did not set uio_td == NULL 2014-04-24 20:47:58 +00:00
gdb
geom Keep geom_uncompress(4) in line with geom_uzip(4), bring in the r264504 fix. 2014-04-22 18:08:34 +00:00
gnu Symbolic bindings for the dts files... 2014-02-28 16:51:33 +00:00
i386 Retire smp_active. It was racey and caused demonstrated problems with 2014-04-26 20:27:54 +00:00
ia64 Retire smp_active. It was racey and caused demonstrated problems with 2014-04-26 20:27:54 +00:00
isa Remove vestiges of knowing the ISA bus, which we gave up on around 20 2014-03-19 21:03:04 +00:00
kern Retire smp_active. It was racey and caused demonstrated problems with 2014-04-26 20:27:54 +00:00
kgssapi
libkern Fix typo 2013-11-29 20:14:26 +00:00
mips Retire smp_active. It was racey and caused demonstrated problems with 2014-04-26 20:27:54 +00:00
modules Add preliminary support for the Realtek RTL8188EUS and RTL8188ETV chipsets. 2014-04-25 08:01:22 +00:00
net Move up fibnum to ensure it is always defined. 2014-04-27 02:20:09 +00:00
net80211 Use logical rather than bitwise OR in if() expression. 2014-04-26 23:22:49 +00:00
netgraph Remove AppleTalk support. 2014-03-14 06:29:43 +00:00
netinet Fix subnet and default routes on different FIBs on the same subnet. 2014-04-24 23:56:56 +00:00
netinet6 Use "hash" value in rtalloc_mpath_fib() instead of RTF_ANNOUNCE flag. 2014-04-26 16:46:33 +00:00
netipsec Remove _IP_VHL* macros and related ifdefs. 2014-04-16 05:31:54 +00:00
netnatm
netpfil Define startup order the same way as it is in dummynet. 2014-04-26 08:05:16 +00:00
netsmb Remove redundant unlock. 2014-04-17 12:22:08 +00:00
nfs - Remove rt_metrics_lite and simply put its members into rtentry. 2014-03-05 01:17:47 +00:00
nfsclient For software builds, the NFS client does many small 2013-12-07 23:05:59 +00:00
nfsserver The PR reported that the old NFS server did not set uio_td == NULL 2014-04-24 20:47:58 +00:00
nlm Correct a typo in nlm_find_host_by_addr(): the intention of the 2014-03-11 00:25:55 +00:00
ofed Rename global cnt to vm_cnt to avoid shadowing. 2014-03-22 10:26:09 +00:00
opencrypto allow the kern.cryptodevallowsoft sysctl to enable symetric/hashes too... 2014-03-11 01:45:46 +00:00
pc98 MFi386: r257858 (by kib) 2014-04-20 05:40:13 +00:00
pci Increase the number of TX DMA segments from 32 to 35. It turned 2014-03-31 01:54:59 +00:00
powerpc Retire smp_active. It was racey and caused demonstrated problems with 2014-04-26 20:27:54 +00:00
rpc Fix lock acquisition in case no request space available, missed in r260097. 2014-02-04 00:00:01 +00:00
security audit: plug FILEDESC_LOCK leak in audit_canon_path. 2014-03-21 01:30:33 +00:00
sparc64 Retire smp_active. It was racey and caused demonstrated problems with 2014-04-26 20:27:54 +00:00
sys Retire smp_active. It was racey and caused demonstrated problems with 2014-04-26 20:27:54 +00:00
teken Fix typo. 2014-02-06 13:28:06 +00:00
tools Update NetBSD Foundation copyrights to 2-clause BSD 2014-03-18 01:40:25 +00:00
ufs Update comment to explain search order reverted to historical order 2014-03-22 11:26:39 +00:00
vm When vm_fault_copy_entry() is called from vm_map_protect() for a wired 2014-04-27 05:19:01 +00:00
x86 Make this compile with gcc. 2014-04-05 22:43:18 +00:00
xdr
xen Make this compile with gcc. 2014-04-05 22:43:18 +00:00
Makefile Remove AppleTalk support. 2014-03-14 06:29:43 +00:00