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linux/drivers/xen
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Konstantin Khlebnikov 314e51b985 mm: kill vma flag VM_RESERVED and mm->reserved_vm counter 
A long time ago, in v2.4, VM_RESERVED kept swapout process off VMA,
currently it lost original meaning but still has some effects:

 | effect                 | alternative flags
-+------------------------+---------------------------------------------
1| account as reserved_vm | VM_IO
2| skip in core dump      | VM_IO, VM_DONTDUMP
3| do not merge or expand | VM_IO, VM_DONTEXPAND, VM_HUGETLB, VM_PFNMAP
4| do not mlock           | VM_IO, VM_DONTEXPAND, VM_HUGETLB, VM_PFNMAP

This patch removes reserved_vm counter from mm_struct.  Seems like nobody
cares about it, it does not exported into userspace directly, it only
reduces total_vm showed in proc.

Thus VM_RESERVED can be replaced with VM_IO or pair VM_DONTEXPAND | VM_DONTDUMP.

remap_pfn_range() and io_remap_pfn_range() set VM_IO|VM_DONTEXPAND|VM_DONTDUMP.
remap_vmalloc_range() set VM_DONTEXPAND | VM_DONTDUMP.

[akpm@linux-foundation.org: drivers/vfio/pci/vfio_pci.c fixup]
Signed-off-by: Konstantin Khlebnikov <khlebnikov@openvz.org>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Carsten Otte <cotte@de.ibm.com>
Cc: Chris Metcalf <cmetcalf@tilera.com>
Cc: Cyrill Gorcunov <gorcunov@openvz.org>
Cc: Eric Paris <eparis@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Morris <james.l.morris@oracle.com>
Cc: Jason Baron <jbaron@redhat.com>
Cc: Kentaro Takeda <takedakn@nttdata.co.jp>
Cc: Matt Helsley <matthltc@us.ibm.com>
Cc: Nick Piggin <npiggin@kernel.dk>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Robert Richter <robert.richter@amd.com>
Cc: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Cc: Venkatesh Pallipadi <venki@google.com>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-10-09 16:22:19 +09:00
..
xen-pciback Features: 2012-10-02 22:09:10 -07:00
xenbus xen/gndev: Xen backend support for paged out grant targets V4. 2012-09-21 09:23:51 -04:00
xenfs userns: Convert xenfs to use kuid and kgid where appropriate 2012-09-21 03:13:06 -07:00
acpi.c xen/acpi/sleep: Enable ACPI sleep via the __acpi_os_prepare_sleep 2012-05-07 15:33:18 -04:00
balloon.c xen/balloon: Avoid OOM when requesting highmem 2011-11-16 12:13:43 -05:00
biomerge.c xen: using EXPORT_SYMBOL requires including export.h 2012-01-18 15:37:49 -08:00
cpu_hotplug.c xen/bootup: During bootup suppress XENBUS: Unable to read cpu state 2012-02-03 16:05:30 -05:00
dbgp.c USB EHCI/Xen: propagate controller reset information to hypervisor 2012-09-18 17:20:48 +01:00
events.c xen: mark xen_init_IRQ __init 2012-10-02 12:34:56 -04:00
evtchn.c xen/event: Add reference counting to event channels 2011-11-21 17:14:48 -05:00
features.c
gntalloc.c mm: kill vma flag VM_RESERVED and mm->reserved_vm counter 2012-10-09 16:22:19 +09:00
gntdev.c mm: kill vma flag VM_RESERVED and mm->reserved_vm counter 2012-10-09 16:22:19 +09:00
grant-table.c Features: 2012-10-02 22:09:10 -07:00
Kconfig xen/mce: Add mcelog support for Xen platform 2012-07-19 15:51:36 -04:00
Makefile Features: 2012-10-07 07:13:01 +09:00
manage.c xen/resume: Fix compile warnings. 2012-04-19 15:12:49 -04:00
mcelog.c xen/mce: add .poll method for mcelog device driver 2012-07-19 15:51:41 -04:00
pci.c xen/pci: Check for PCI bridge before using it. 2012-05-30 10:16:35 -04:00
pcpu.c xen/pcpu: Xen physical cpus online/offline sys interface 2012-07-19 15:51:39 -04:00
platform-pci.c Revert "xen PVonHVM: move shared_info to MMIO before kexec" 2012-08-16 13:05:25 -04:00
privcmd.c mm: kill vma flag VM_RESERVED and mm->reserved_vm counter 2012-10-09 16:22:19 +09:00
privcmd.h xen: Add privcmd device driver 2011-12-16 13:29:31 -05:00
swiotlb-xen.c Merge branch 'stable/late-swiotlb.v3.3' into stable/for-linus-3.7 2012-09-22 20:01:24 -04:00
sys-hypervisor.c xen/sysfs: Use XENVER_guest_handle to query UUID 2012-08-23 10:16:18 -04:00
tmem.c xen/apic/xenbus/swiotlb/pcifront/grant/tmem: Make functions or variables static. 2012-08-21 14:50:03 -04:00
xen-acpi-processor.c cpuidle / ACPI : remove power from acpi_processor_cx structure 2012-09-05 15:13:48 +02:00
xen-balloon.c Features: 2012-03-22 20:16:14 -07:00
xen-selfballoon.c xen: Add selfballoning memory reservation tunable. 2012-05-21 10:52:53 -04:00
xencomm.c