linux/drivers
Andy Whitcroft 540557b943 sparsemem: record when a section has a valid mem_map
We have flags to indicate whether a section actually has a valid mem_map
associated with it.  This is never set and we rely solely on the present bit
to indicate a section is valid.  By definition a section is not valid if it
has no mem_map and there is a window during init where the present bit is set
but there is no mem_map, during which pfn_valid() will return true
incorrectly.

Use the existing SECTION_HAS_MEM_MAP flag to indicate the presence of a valid
mem_map.  Switch valid_section{,_nr} and pfn_valid() to this bit.  Add a new
present_section{,_nr} and pfn_present() interfaces for those users who care to
know that a section is going to be valid.

[akpm@linux-foundation.org: coding-syle fixes]
Signed-off-by: Andy Whitcroft <apw@shadowen.org>
Acked-by: Mel Gorman <mel@csn.ul.ie>
Cc: Christoph Lameter <clameter@sgi.com>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Andi Kleen <ak@suse.de>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-16 09:42:51 -07:00
..
acorn/char
acpi more trivial signedness fixes in drivers 2007-10-14 12:41:52 -07:00
amba Driver core: change add_uevent_var to use a struct 2007-10-12 14:51:01 -07:00
ata docbook: fix libata content 2007-10-15 17:56:36 -07:00
atm more trivial signedness fixes in drivers 2007-10-14 12:41:52 -07:00
auxdisplay
base sparsemem: record when a section has a valid mem_map 2007-10-16 09:42:51 -07:00
block more trivial signedness fixes in drivers 2007-10-14 12:41:52 -07:00
bluetooth
cdrom [POWERPC] iSeries: Move detection of virtual cdroms 2007-10-11 20:40:47 +10:00
char Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2007-10-15 13:41:39 -07:00
clocksource
connector [NET]: make netlink user -> kernel interface synchronious 2007-10-10 21:15:29 -07:00
cpufreq Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/driver-2.6 2007-10-12 15:49:37 -07:00
crypto [CRYPTO] sha: Add header file for SHA definitions 2007-10-10 16:55:50 -07:00
dio
dma
edac Drivers: clean up direct setting of the name of a kset 2007-10-12 14:51:02 -07:00
eisa signedness: module_param_array nump argument 2007-10-14 12:41:52 -07:00
fc4 Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6 2007-10-15 08:19:33 -07:00
firewire fw-cdev __user annotations 2007-10-14 12:41:51 -07:00
firmware Driver core: rename ktype_edd and ktype_efivar 2007-10-12 14:51:12 -07:00
hid HID: fix HIDIOCGRDESC memory access in hidraw 2007-10-15 08:12:00 -07:00
hwmon Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2007-10-15 13:41:39 -07:00
i2c Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm 2007-10-15 16:08:50 -07:00
ide alim15x3: remove redundant m5229_revision check 2007-10-13 17:47:53 +02:00
ieee1394 Driver core: change add_uevent_var to use a struct 2007-10-12 14:51:01 -07:00
infiniband IB/ipoib: Verify address handle validity on send 2007-10-15 14:20:45 -04:00
input Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm 2007-10-15 16:08:50 -07:00
isdn [ISDN]: Fix compile with CONFIG_ISDN_X25 disabled. 2007-10-15 12:52:20 -07:00
kvm sched: guest CPU accounting: maintain guest state in KVM 2007-10-15 17:00:19 +02:00
leds [ARM] 4576/1: CM-X270 machine support 2007-10-15 18:53:57 +01:00
lguest
macintosh Merge master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6 2007-10-12 21:27:47 -04:00
mca
md dm: emc_endio returns void 2007-10-13 09:41:03 -07:00
media signedness: module_param_array nump argument 2007-10-14 12:41:52 -07:00
message docbook: fix kernel-api content 2007-10-15 17:56:36 -07:00
mfd
misc Map volume and brightness events on thinkpads 2007-10-15 13:54:40 -07:00
mmc Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm 2007-10-15 16:08:50 -07:00
mtd Reinstate lost flush_ioremap_region() fix to pxa2xx-flash driver 2007-10-15 12:55:20 -07:00
net Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm 2007-10-15 16:08:50 -07:00
nubus
of
oprofile
parisc
parport
pci Get rid of unused variable warning in drivers/pci/hotplug/pci_hotplug_core.c 2007-10-15 09:07:58 -07:00
pcmcia pcmcia: use DMA_MASK_NONE for the default for all pcmcia devices 2007-10-16 09:42:50 -07:00
pnp
power Driver core: change add_uevent_var to use a struct 2007-10-12 14:51:01 -07:00
ps3
rapidio
rtc
s390 Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6 2007-10-15 08:19:33 -07:00
sbus
scsi scsi/gdth: fix crash in gdth_timeout if no gdth controllers found 2007-10-15 12:46:16 -07:00
serial Add support for Wacom WACF007 and WACF008 to serial pnp driver 2007-10-16 09:42:50 -07:00
sh
sn
spi Driver core: change add_uevent_var to use a struct 2007-10-12 14:51:01 -07:00
ssb missing include in ssb 2007-10-14 08:53:33 -07:00
tc
telephony
uio
usb docbook: fix usb content 2007-10-15 17:56:36 -07:00
video Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm 2007-10-15 16:08:50 -07:00
w1 Driver core: change add_uevent_var to use a struct 2007-10-12 14:51:01 -07:00
xen
zorro
Kconfig
Makefile