Pavel Emelyanov 541c237c09 pagemap: prepare to reuse constant bits with page-shift ... In order to reuse bits from pagemap entries gracefully, we leave the entries as is but on pagemap open emit a warning in dmesg, that bits 55-60 are about to change in a couple of releases. Next, if a user issues soft-dirty clear command via the clear_refs file (it was disabled before v3.9) we assume that he's aware of the new pagemap format, note that fact and report the bits in pagemap in the new manner. The "migration strategy" looks like this then: 1. existing users are not affected -- they don't touch soft-dirty feature, thus see old bits in pagemap, but are warned and have time to fix themselves 2. those who use soft-dirty know about new pagemap format 3. some time soon we get rid of any signs of page-shift in pagemap as well as this trick with clear-soft-dirty affecting pagemap format. Signed-off-by: Pavel Emelyanov <xemul@parallels.com> Cc: Matt Mackall <mpm@selenic.com> Cc: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com> Cc: Glauber Costa <glommer@parallels.com> Cc: Marcelo Tosatti <mtosatti@redhat.com> Cc: KOSAKI Motohiro <kosaki.motohiro@gmail.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2013-07-03 16:07:26 -07:00
..
ABI	Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2013-07-02 16:15:23 -07:00
accounting	doc: Remove unnecessary declarations from Documentation/accounting/getdelays.c	2012-11-26 14:22:21 +01:00
acpi	ACPI/APEI: Update einj documentation for param1/param2	2013-06-06 15:28:11 -07:00
aoe	aoe: allow user to disable target failure timeout	2012-12-17 17:15:25 -08:00
arm	ARM SoC late changes	2013-07-02 14:42:51 -07:00
arm64	arm64: KVM: document kernel object mappings in HYP	2013-06-12 16:42:20 +01:00
auxdisplay
backlight	backlight: lp855x: remove duplicate platform data	2013-04-29 18:28:19 -07:00
blackfin
block	Documentation: cfq-iosched: update documentation help for cfq tunables	2013-04-09 14:57:06 +02:00
blockdev	nbd: update documentation and link to mailinglist	2013-02-27 19:10:22 -08:00
bus-devices	ARM: OMAP2+: gpmc: generic timing calculation	2012-11-09 18:07:11 +05:30
cdrom
cgroups	sched: Rename sched.c as sched/core.c in comments and Documentation	2013-06-19 12:58:42 +02:00
connector
console	TTY:console: update document console.txt	2013-05-21 10:21:57 -07:00
cpu-freq	Merge branch 'timers-nohz-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2013-05-05 13:23:27 -07:00
cpuidle	cpuidle: make a single register function for all	2013-04-23 13:45:22 +02:00
cris
crypto	KEYS: Document asymmetric key type	2012-10-08 13:50:12 +10:30
development-process
device-mapper	DM RAID: Add message/status support for changing sync action	2013-04-24 11:42:43 +10:00
devicetree	Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm	2013-07-03 09:46:29 -07:00
DocBook	Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2013-07-02 16:14:35 -07:00
driver-model	lib: devres: Introduce devm_ioremap_resource()	2013-01-22 09:41:43 -08:00
dvb	[media] get_dvb_firmware: Fix the location of firmware for Terratec HTC	2013-01-01 11:18:26 -02:00
early-userspace
EDID	drm: Add 1600x1200 (UXGA) screen resolution to the built-in EDIDs	2013-04-12 14:06:16 +10:00
extcon
fault-injection	doc: fix quite a few typos within Documentation	2012-11-19 14:28:24 +01:00
fb
filesystems	mm: soft-dirty bits for user memory changes tracking	2013-07-03 16:07:26 -07:00
firmware_class	firmware loader: document firmware cache mechanism	2012-11-14 15:07:18 -08:00
fmc	FMC: add a char-device mezzanine driver	2013-06-18 15:42:15 -07:00
frv
hid	HID: remove x bit from sensor doc	2012-12-14 08:48:59 +01:00
hwmon	Finally eradicate CONFIG_HOTPLUG	2013-06-03 14:20:18 -07:00
i2c	i2c: Fix my e-mail address in drivers and documentation	2013-03-22 11:18:34 +01:00
i2o
ia64	Fix example error_injection_tool	2013-04-02 09:39:55 -07:00
ide
infiniband	IB/ipoib: Add rtnl_link_ops support	2012-09-20 16:49:17 -04:00
input	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input	2013-03-11 07:49:37 -07:00
ioctl	USB: cdc-wdm: implement IOCTL_WDM_MAX_COMMAND	2013-03-25 13:32:20 -07:00
isdn
ja_JP
kbuild	Finally eradicate CONFIG_HOTPLUG	2013-06-03 14:20:18 -07:00
kdump	Add size restriction to the kdump documentation	2013-04-02 09:40:03 -07:00
ko_KR
laptops	Documentation/laptops: remove depends on CONFIG_EXPERIMENTAL	2013-01-21 14:52:42 -08:00
leds	leds: lp55xx: configure the clock detection	2013-04-01 11:04:53 -07:00
m68k	block: remove refs to XD disks from documentation	2013-05-17 15:17:12 +02:00
make
memory-devices
metag	metag: Basic documentation	2013-03-02 20:09:50 +00:00
mips
misc-devices	mei: bus: Add device enabling and disabling API	2013-04-08 16:57:15 -07:00
mmc	mmc: core: Add in support to expose PRV for v4 MMCs	2013-03-22 12:10:42 -04:00
mn10300
mtd
namespaces	userns: Recommend use of memory control groups.	2013-01-26 22:20:06 -08:00
netlabel
networking	tcp: doc : fix the syncookies default value	2013-06-24 00:26:26 -07:00
nfc	NFC: Update pn544 documentation	2013-01-10 01:27:46 +01:00
parisc
PCI	PCI/MSI: Enable multiple MSIs with pci_enable_msi_block_auto()	2013-01-24 17:25:13 +01:00
pcmcia
power	PM / hibernate: Correct documentation	2013-05-14 01:58:43 +02:00
powerpc	powerpc/tm: Fix userspace stack corruption on signal delivery for active transactions	2013-06-01 08:29:23 +10:00
pps
prctl	seccomp: Make syscall skipping and nr changes more consistent	2012-10-02 21:14:29 +10:00
pti
ptp
rapidio	rapidio: documentation update for enumeration changes	2013-05-24 16:22:50 -07:00
RCU	Merge branches 'cbnum.2013.06.10a', 'doc.2013.06.10a', 'fixes.2013.06.10a', 'srcu.2013.06.10a' and 'tiny.2013.06.10a' into HEAD	2013-06-10 13:46:44 -07:00
s390	s390/cio: add condev keyword to cio_ignore	2013-05-02 15:50:20 +02:00
scheduler	sched: Rename sched.c as sched/core.c in comments and Documentation	2013-06-19 12:58:42 +02:00
scsi	[SCSI] qla2xxx: Update copyright dates information in LICENSE.qla2xxx file.	2013-04-06 11:31:30 +01:00
security	Smack: add support for modification of existing rules	2013-03-19 14:16:42 -07:00
serial	stallion: final cleanup	2013-06-03 14:31:39 -07:00
sh
sound	ALSA: hda - Add models for Dell headset jacks	2013-06-17 11:15:56 +02:00
spi	Documentation: remove __dev* attributes.	2013-01-03 15:57:16 -08:00
sysctl	perf: Drop sample rate when sampling is too slow	2013-06-23 11:52:57 +02:00
target	target: Simplify fabric sense data length handling	2012-09-17 17:12:58 -07:00
thermal	Thermal: update documentation for thermal_zone_device_register	2013-04-27 09:16:04 +08:00
timers	nohz_full: Document additional restrictions	2013-06-10 13:42:38 -07:00
trace	x86: Add NMI duration tracepoints	2013-06-23 11:52:58 +02:00
usb	Driver core patches for 3.11-rc1	2013-07-02 11:44:19 -07:00
vDSO
video4linux	[media] v4l2: Add a V4L2 driver for SI476X MFD	2013-04-18 21:20:34 -03:00
virtual	Main features:	2013-07-03 10:31:38 -07:00
vm	pagemap: prepare to reuse constant bits with page-shift	2013-07-03 16:07:26 -07:00
w1	w1: add family based automatic module loading	2013-06-03 14:09:14 -07:00
watchdog	watchdog: core: dt: add support for the timeout-sec dt property	2013-03-01 12:48:36 +01:00
wimax
x86	x86, microcode, amd: Early microcode patch loading support for AMD	2013-05-30 20:19:25 -07:00
xtensa	xtensa: document MMUv3 setup sequence	2013-05-09 01:07:09 -07:00
zh_CN	gpio: update gpio Chinese documentation	2013-04-16 18:47:22 +09:00
.gitignore
00-INDEX	FMC: add documentation for the core	2013-06-18 15:41:03 -07:00
applying-patches.txt
atomic_ops.txt	Documentation: Memory barrier semantics of atomic_xchg()	2013-01-08 14:14:55 -08:00
bad_memory.txt
basic_profiling.txt
bcache.txt	bcache: clarify free/available/unused space	2013-05-15 00:42:52 -07:00
binfmt_misc.txt
braille-console.txt
bt8xxgpio.txt
btmrvl.txt
BUG-HUNTING
bus-virt-phys-mapping.txt
cachetlb.txt
Changes
circular-buffers.txt
clk.txt	clk: add clk_ignore_unused option to keep boot clocks on	2013-04-27 23:03:43 -07:00
coccinelle.txt	Coccinelle: Add support to the SPFLAGS variable	2013-04-08 15:42:03 +02:00
CodingStyle	Documentation: remove depends on CONFIG_EXPERIMENTAL	2013-01-11 11:38:03 -08:00
cpu-hotplug.txt	Finally eradicate CONFIG_HOTPLUG	2013-06-03 14:20:18 -07:00
cpu-load.txt
cputopology.txt
crc32.txt
dcdbas.txt
debugging-modules.txt
debugging-via-ohci1394.txt
dell_rbu.txt
devices.txt	block: remove refs to XD disks from documentation	2013-05-17 15:17:12 +02:00
digsig.txt
DMA-API-HOWTO.txt	Documentation/DMA-API-HOWTO.txt: fix typo	2013-02-27 19:10:23 -08:00
DMA-API.txt	dma-debug: New interfaces to debug dma mapping errors	2012-10-24 17:06:43 +02:00
DMA-attributes.txt	common: DMA-mapping: add DMA_ATTR_FORCE_CONTIGUOUS attribute	2012-11-29 03:30:34 -08:00
dma-buf-sharing.txt	dma-buf: replace dma_buf_export() with dma_buf_export_named()	2013-05-01 16:35:36 +05:30
DMA-ISA-LPC.txt
dmaengine.txt
dmatest.txt	dmatest: do not allow to interrupt ongoing tests	2013-06-08 02:13:44 +05:30
dontdiff	x86: remove offsets.h from .gitignore and dontdiff	2012-11-19 14:10:53 +01:00
dynamic-debug-howto.txt	dynamic_debug: dynamic hex dump	2013-01-17 12:19:09 -08:00
edac.txt	Merge branch 'devel'	2012-07-29 21:11:05 -03:00
eisa.txt
email-clients.txt
flexible-arrays.txt
futex-requeue-pi.txt
gcov.txt
gpio.txt	Remove GENERIC_GPIO config option	2013-04-16 18:47:19 +09:00
highuid.txt
HOWTO	Documentation: Updated broken link in HOWTO	2013-06-03 14:22:57 -07:00
hw_random.txt	hwrng: Fix a wrong comment in Documentation/hw_random.txt	2013-03-10 18:16:36 +08:00
hwspinlock.txt
init.txt
initrd.txt
Intel-IOMMU.txt
intel_txt.txt	Documentation: remove depends on CONFIG_EXPERIMENTAL	2013-01-11 11:38:03 -08:00
io-mapping.txt
io_ordering.txt
iostats.txt	iostats.txt: add easy-to-find description for field 6	2013-04-29 15:18:50 +02:00
IPMI.txt	ipmi: add options to disable openfirmware and PCI scanning	2013-02-27 19:10:21 -08:00
IRQ-affinity.txt
IRQ-domain.txt	irqdomain: update documentation	2012-12-05 23:52:10 +00:00
IRQ.txt
irqflags-tracing.txt
isapnp.txt
java.txt
kernel-doc-nano-HOWTO.txt	Kernel-doc: Convention: Use a "Return" section to describe return values	2012-11-27 21:08:57 +01:00
kernel-docs.txt
kernel-parameters.txt	Merge branch 'for-3.11' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq	2013-07-02 19:53:30 -07:00
kernel-per-CPU-kthreads.txt	kthread: Add kworker kthreads to OS-jitter documentation	2013-06-10 13:42:38 -07:00
kmemcheck.txt
kmemleak.txt
kobject.txt	Documentation: Fix "struct kobj_type" to include newer members.	2012-09-04 16:06:34 -07:00
kprobes.txt
kref.txt	kref: Add kref_get_unless_zero documentation	2012-11-28 18:36:06 +10:00
ldm.txt
local_ops.txt
lockdep-design.txt
lockstat.txt	locking/stat: Fix a typo	2013-02-19 08:42:37 +01:00
lockup-watchdogs.txt
logo.gif
logo.txt
magic-number.txt	wanrouter: completely decouple obsolete code from kernel.	2013-01-31 19:20:33 -05:00
Makefile
ManagementStyle
md.txt	MD: Fix typos in MD documentation	2013-04-24 11:42:42 +10:00
media-framework.txt	[media] Documentation/media-framework.txt: fix a sentence	2013-02-08 13:27:13 -02:00
memory-barriers.txt	Documentation: Memory barrier semantics of atomic_xchg()	2013-01-08 14:14:55 -08:00
memory-hotplug.txt	hotplug: update nodemasks management	2012-12-12 17:38:33 -08:00
mono.txt
mutex-design.txt
nommu-mmap.txt
numastat.txt
oops-tracing.txt
padata.txt
parport-lowlevel.txt
parport.txt
percpu-rw-semaphore.txt	percpu-rw-semaphore: fix documentation typos	2012-09-26 19:56:15 +02:00
pi-futex.txt
pinctrl.txt	pinctrl: document the "GPIO mode" pitfall	2013-03-18 11:03:29 +01:00
pnp.txt
preempt-locking.txt
printk-formats.txt	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2013-04-30 13:47:37 -07:00
pwm.txt	pwm: add devm_pwm_get() and devm_pwm_put()	2012-09-10 17:05:45 +02:00
ramoops.txt	pstore/ftrace: Convert to its own enable/disable debugfs knob	2012-09-06 22:16:58 -07:00
rbtree.txt	rbtree: move augmented rbtree functionality to rbtree_augmented.h	2012-10-09 16:22:40 +09:00
remoteproc.txt	remoteproc: add rproc_report_crash function to notify rproc crashes	2012-09-18 12:53:22 +03:00
rfkill.txt
robust-futex-ABI.txt
robust-futexes.txt
rpmsg.txt	Documentation: remove __dev* attributes.	2013-01-03 15:57:16 -08:00
rt-mutex-design.txt	sched: Rename sched.c as sched/core.c in comments and Documentation	2013-06-19 12:58:42 +02:00
rt-mutex.txt
rtc.txt	rtc-proc: permit the /proc/driver/rtc device to use other devices	2012-10-06 03:05:01 +09:00
SAK.txt
SecurityBugs
serial-console.txt
sgi-ioc4.txt
sgi-visws.txt
SM501.txt
smsc_ece1099.txt	mfd: smsc: Add support for smsc gpio io/keypad driver	2012-10-01 15:27:48 +02:00
sparse.txt	Documentation/sparse.txt: document context annotations for lock checking	2012-12-17 17:15:23 -08:00
spinlocks.txt	sched: Rename sched.c as sched/core.c in comments and Documentation	2013-06-19 12:58:42 +02:00
stable_api_nonsense.txt
stable_kernel_rules.txt
static-keys.txt
SubmitChecklist	Finally eradicate CONFIG_HOTPLUG	2013-06-03 14:20:18 -07:00
SubmittingDrivers
SubmittingPatches	checkpatch: add Suggested-by as a standard signature	2013-04-29 18:28:20 -07:00
svga.txt
sysfs-rules.txt
sysrq.txt	Documentation/sysrq: fix inconstistent help message of sysrq key	2013-04-30 17:04:10 -07:00
this_cpu_ops.txt	percpu: add documentation on this_cpu operations	2013-04-04 10:24:53 -07:00
unaligned-memory-access.txt
unicode.txt
unshare.txt
vfio.txt	vfio: Trivial Documentation correction	2012-09-21 10:48:03 -06:00
VGA-softcursor.txt
vgaarbiter.txt
video-output.txt
vme_api.txt
volatile-considered-harmful.txt
workqueue.txt
ww-mutex-design.txt	mutex: Add support for wound/wait style locks	2013-06-26 12:10:56 +02:00
xz.txt
zorro.txt