linux/include
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
..
acpi
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
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 atomic: use <linux/atomic.h> 2011-07-26 16:49:47 -07:00
scsi
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