linux/include
Christoph Lameter 7ea1530ab3 Memoryless nodes: introduce mask of nodes with memory
It is necessary to know if nodes have memory since we have recently begun to
add support for memoryless nodes.  For that purpose we introduce a two new
node states: N_HIGH_MEMORY and N_NORMAL_MEMORY.

A node has its bit in N_HIGH_MEMORY set if it has any memory regardless of the
type of mmemory.  If a node has memory then it has at least one zone defined
in its pgdat structure that is located in the pgdat itself.

A node has its bit in N_NORMAL_MEMORY set if it has a lower zone than
ZONE_HIGHMEM.  This means it is possible to allocate memory that is not
subject to kmap.

N_HIGH_MEMORY and N_NORMAL_MEMORY can then be used in various places to insure
that we do the right thing when we encounter a memoryless node.

[akpm@linux-foundation.org: build fix]
[Lee.Schermerhorn@hp.com: update N_HIGH_MEMORY node state for memory hotadd]
[y-goto@jp.fujitsu.com: Fix memory hotplug + sparsemem build]
Signed-off-by: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com>
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Acked-by: Bob Picco <bob.picco@hp.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Mel Gorman <mel@skynet.ie>
Signed-off-by: Yasunori Goto <y-goto@jp.fujitsu.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-16 09:42:58 -07:00
..
acpi ACPI: CONFIG_ACPI_SLEEP=n power off regression in 2.6.23-rc8 (NOT in rc7) 2007-09-25 17:58:52 -04:00
asm-alpha
asm-arm Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm 2007-10-15 16:08:50 -07:00
asm-avr32 x86: optimize page faults like all other achitectures and kill notifier cruft 2007-10-16 09:42:50 -07:00
asm-blackfin Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2007-10-15 13:41:39 -07:00
asm-cris
asm-frv frv: missing casts in cmpxchg() 2007-10-14 12:41:51 -07:00
asm-generic Generic Virtual Memmap support for SPARSEMEM 2007-10-16 09:42:51 -07:00
asm-h8300 Binfmt_flat: Add minimum support for the Blackfin relocations 2007-10-03 23:41:43 +08:00
asm-ia64 IA64: SPARSEMEM_VMEMMAP 16K page size support 2007-10-16 09:42:51 -07:00
asm-m32r Binfmt_flat: Add minimum support for the Blackfin relocations 2007-10-03 23:41:43 +08:00
asm-m68k m68k: Export cachectl.h 2007-10-13 09:41:03 -07:00
asm-m68knommu Binfmt_flat: Add minimum support for the Blackfin relocations 2007-10-03 23:41:43 +08:00
asm-mips move a few definitions to au1000_xxs1500.c 2007-10-16 09:42:50 -07:00
asm-parisc
asm-powerpc ppc64: SPARSEMEM_VMEMMAP support 2007-10-16 09:42:51 -07:00
asm-ppc [POWERPC] Prevent direct inclusion of <asm/rwsem.h>. 2007-09-22 14:49:21 +10:00
asm-s390 x86: optimize page faults like all other achitectures and kill notifier cruft 2007-10-16 09:42:50 -07:00
asm-sh x86: optimize page faults like all other achitectures and kill notifier cruft 2007-10-16 09:42:50 -07:00
asm-sh64 Merge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh64-2.6 2007-10-13 09:50:26 -07:00
asm-sparc [SPARC32]: Add irqflags.h to sparc32 and use it from generic code. 2007-10-13 21:53:11 -07:00
asm-sparc64 SPARC64: SPARSEMEM_VMEMMAP support 2007-10-16 09:42:51 -07:00
asm-um
asm-v850 Binfmt_flat: Add minimum support for the Blackfin relocations 2007-10-03 23:41:43 +08:00
asm-x86 x86_64: SPARSEMEM_VMEMMAP 2M page size support 2007-10-16 09:42:51 -07:00
asm-xtensa
crypto [CRYPTO] sha: Add header file for SHA definitions 2007-10-10 16:55:50 -07:00
keys
linux Memoryless nodes: introduce mask of nodes with memory 2007-10-16 09:42:58 -07:00
math-emu
media v4l: copy_to_user() is not a good method name 2007-10-13 09:58:59 -07:00
mtd
net [IPV6]: Replace sk_buff ** with sk_buff * in input handlers 2007-10-15 12:50:28 -07:00
pcmcia pcmcia: use DMA_MASK_NONE for the default for all pcmcia devices 2007-10-16 09:42:50 -07:00
rdma IB/cm: Modify interface to send MRAs in response to duplicate messages 2007-10-09 19:59:17 -07:00
rxrpc
scsi Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6 2007-10-15 08:19:33 -07:00
sound
video
xen
Kbuild