Konstantin Weitz 45961722f8 mm: add support for discard of unused ptes ... In a virtualized environment and given an appropriate interface the guest can mark pages as unused while they are free (for the s390 implementation see git commit 45e576b1c3 "guest page hinting light"). For the host the unused state is a property of the pte. This patch adds the primitive 'pte_unused' and code to the host swap out handler so that pages marked as unused by all mappers are not swapped out but discarded instead, thus saving one IO for swap out and potentially another one for swap in. [ Martin Schwidefsky: patch reordering and simplification ] Signed-off-by: Konstantin Weitz <konstantin.weitz@gmail.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>		2014-02-21 08:50:18 +01:00
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acpi	Merge branches 'acpi-processor', 'acpi-hotplug', 'acpi-init', 'acpi-pm' and 'acpica'	2014-01-29 11:47:18 +01:00
asm-generic	mm: add support for discard of unused ptes	2014-02-21 08:50:18 +01:00
clocksource	…
crypto	…
drm	Merge tag 'ttm-fixes-3.14-2014-02-18' of git://people.freedesktop.org/~thomash/linux into drm-fixes	2014-02-19 08:21:26 +10:00
dt-bindings	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc	2014-01-30 17:07:18 -08:00
keys	…
kvm	…
linux	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2014-02-18 15:52:43 -08:00
math-emu	…
media	…
memory	…
misc	…
net	net: sctp: Fix a_rwnd/rwnd management to reflect real state of the receiver's buffer	2014-02-17 00:16:56 -05:00
pcmcia	…
ras	…
rdma	IB: Report using RoCE IP based gids in port caps	2014-02-13 14:46:03 -08:00
rxrpc	…
scsi	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending	2014-01-31 15:31:23 -08:00
sound	…
target	target: Simplify command completion by removing CMD_T_FAILED flag	2014-02-12 15:14:30 -08:00
trace	intel_pstate: Remove energy reporting from pstate_sample tracepoint	2014-02-13 02:11:18 +01:00
uapi	Merge tag 'vmwgfx-fixes-3.14-2014-02-18' of git://people.freedesktop.org/~thomash/linux into drm-fixes	2014-02-19 08:21:02 +10:00
video	…
xen	Merge branch 'for-linus' of git://git.kernel.dk/linux-block	2014-02-14 10:45:18 -08:00
Kbuild	…