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fbd80bd047
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Alan Cox fbd80bd047 Refactor the code that performs physically contiguous memory allocation, 
yielding a new public interface, vm_page_alloc_contig().  This new function
addresses some of the limitations of the current interfaces, contigmalloc()
and kmem_alloc_contig().  For example, the physically contiguous memory that
is allocated with those interfaces can only be allocated to the kernel vm
object and must be mapped into the kernel virtual address space.  It also
provides functionality that vm_phys_alloc_contig() doesn't, such as wiring
the returned pages.  Moreover, unlike that function, it respects the low
water marks on the paging queues and wakes up the page daemon when
necessary.  That said, at present, this new function can't be applied to all
types of vm objects.  However, that restriction will be eliminated in the
coming weeks.

From a design standpoint, this change also addresses an inconsistency
between vm_phys_alloc_contig() and the other vm_phys_alloc*() functions.
Specifically, vm_phys_alloc_contig() manipulated vm_page fields that other
functions in vm/vm_phys.c didn't.  Moreover, vm_phys_alloc_contig() knew
about vnodes and reservations.  Now, vm_page_alloc_contig() is responsible
for these things.

Reviewed by:	kib
Discussed with:	jhb
2011-11-16 16:46:09 +00:00
..
amd64 Fix SIGATOMIC_M{IN,AX} on x86-64. These are meant to be the minimum values that are allowed in a sig_atomic_t, but it looks like they were just copied from the x86 versions, so these definitions violate the C and C++ specs. Mismatch was spotted by the libc++ test suite. 2011-11-12 20:16:06 +00:00
arm Introduce the option VFS_ALLOW_NONMPSAFE and turn it on by default on 2011-11-08 10:18:07 +00:00
boot Add DTS for the Freescale P1020RDB. 2011-11-14 19:06:28 +00:00
bsm
cam - fix duplicate "a a" in some comments 2011-11-13 17:06:33 +00:00
cddl Correct the types of the arguments to return probes of the syscall 2011-11-11 03:49:42 +00:00
compat - Split out a kern_posix_fadvise() from the posix_fadvise() system call so 2011-11-14 18:00:15 +00:00
conf Comment out TI_JUMBO_HDRSPLIT. TI_JUMBO_HDRSPLIT requires TI_SF_BUF_JUMBO. 2011-11-08 23:19:22 +00:00
contrib Add missing PF_UNLOCK in pf_test 2011-10-30 14:55:00 +00:00
crypto Update Copyright. 2011-10-27 14:15:26 +00:00
ddb Follow up to r225203 refining break-to-debugger run-time configuration 2011-08-27 14:24:27 +00:00
dev Add single-message MSI support to mfi(4). It is disabled by default but 2011-11-16 15:39:27 +00:00
fs Handle invalid large values for getdirentries(2) data buffer size. 2011-11-16 10:11:55 +00:00
gdb
geom Temporary revert r227009 to fix freeze on UP systems without PREEMPTION. 2011-11-14 19:32:05 +00:00
gnu Mark all SYSCTL_NODEs static that have no corresponding SYSCTL_DECLs. 2011-11-07 15:43:11 +00:00
i386 Weaken the part of assertions added in the r227394. Only check that the 2011-11-11 04:10:36 +00:00
ia64 Introduce the option VFS_ALLOW_NONMPSAFE and turn it on by default on 2011-11-08 10:18:07 +00:00
isa Move VT switching hack for suspend/resume from bus drivers to syscons.c 2011-05-09 18:46:49 +00:00
kern As it turns out, r186347 actually is insufficient to avoid the use of the 2011-11-15 20:11:03 +00:00
kgssapi Add missing break statement to make sure all 3DES etypes really are treated 2011-10-10 09:13:07 +00:00
libkern Mark MALLOC_DEFINEs static that have no corresponding MALLOC_DECLAREs. 2011-11-07 06:44:47 +00:00
mips Introduce the option VFS_ALLOW_NONMPSAFE and turn it on by default on 2011-11-08 10:18:07 +00:00
modules Revert this previous commit for now - although this override unfortunately 2011-11-10 23:16:59 +00:00
net Remove a few bits of FreeBSD 2.x compatibility code. 2011-11-14 18:21:27 +00:00
net80211 .. add missing include from an incorrect merge. 2011-11-08 14:34:01 +00:00
netatalk
netgraph In r191367 the need for if_free_type() was removed and a new member 2011-11-11 22:57:52 +00:00
netinet Set the MTU of an path to an approriate value if the interface MTU 2011-11-15 20:41:50 +00:00
netinet6 Return the correct value for the IPV6_MULTICAST_HOPS getsockopt() call. 2011-11-13 02:32:10 +00:00
netipsec Add missing va_end() in an error case to clean up after va_start() 2011-10-07 21:00:26 +00:00
netipx Mark all SYSCTL_NODEs static that have no corresponding SYSCTL_DECLs. 2011-11-07 15:43:11 +00:00
netnatm
netncp Change ncp_scan_bindery_object() to pass a constant search string. 2011-10-16 08:44:03 +00:00
netsmb Mark MALLOC_DEFINEs static that have no corresponding MALLOC_DECLAREs. 2011-11-07 06:44:47 +00:00
nfs Mark MALLOC_DEFINEs static that have no corresponding MALLOC_DECLAREs. 2011-11-07 06:44:47 +00:00
nfsclient Finish making 'wcommitsize' an NFS client mount option. 2011-11-14 18:52:07 +00:00
nfsserver Fix the NFS servers so that they can do a Lookup of "..", 2011-09-03 00:28:53 +00:00
nlm Mark all SYSCTL_NODEs static that have no corresponding SYSCTL_DECLs. 2011-11-07 15:43:11 +00:00
ofed Mark all SYSCTL_NODEs static that have no corresponding SYSCTL_DECLs. 2011-11-07 15:43:11 +00:00
opencrypto Add the fo_chown and fo_chmod methods to struct fileops and use them 2011-08-16 20:07:47 +00:00
pc98 Introduce the option VFS_ALLOW_NONMPSAFE and turn it on by default on 2011-11-08 10:18:07 +00:00
pci - Import the common MII bitbang'ing code from NetBSD and convert drivers to 2011-11-01 16:13:59 +00:00
powerpc Refactor the code that performs physically contiguous memory allocation, 2011-11-16 16:46:09 +00:00
rpc Both a crash reported on freebsd-current on Oct. 18 under the 2011-11-03 14:38:03 +00:00
security Mark all SYSCTL_NODEs static that have no corresponding SYSCTL_DECLs. 2011-11-07 15:43:11 +00:00
sparc64 Define curthread as an inline function that loads the thread pointer 2011-11-15 20:17:18 +00:00
sys As it turns out, r186347 actually is insufficient to avoid the use of the 2011-11-15 20:11:03 +00:00
teken Link the demo application against ncursesw to make Unicode work. 2011-10-13 14:20:27 +00:00
tools Restore the comment that I removed by accident. 2011-11-09 13:26:59 +00:00
ufs Use implementation independent inoNN_t scalars for on-disk UFS structures 2011-11-09 07:48:48 +00:00
vm Refactor the code that performs physically contiguous memory allocation, 2011-11-16 16:46:09 +00:00
x86 Mark all SYSCTL_NODEs static that have no corresponding SYSCTL_DECLs. 2011-11-07 15:43:11 +00:00
xdr
xen Properly handle suspend/resume events in the Xen device 2011-09-20 23:44:34 +00:00
Makefile Include sys/xen in cscope tag file generation. 2011-06-10 20:51:41 +00:00