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>

70 files changed, 77 insertions, 105 deletions

diff --git a/Documentation/vm/unevictable-lru.txt b/Documentation/vm/unevictable-lru.txt
index fa206cccf89f..323ff5dba1cc 100644
--- a/Documentation/vm/unevictable-lru.txt
+++ b/Documentation/vm/unevictable-lru.txt
@@ -371,8 +371,8 @@ mlock_fixup() filters several classes of "special" VMAs:
    mlock_fixup() will call make_pages_present() in the hugetlbfs VMA range to
    allocate the huge pages and populate the ptes.
 
-3) VMAs with VM_DONTEXPAND or VM_RESERVED are generally userspace mappings of
-   kernel pages, such as the VDSO page, relay channel pages, etc.  These pages
+3) VMAs with VM_DONTEXPAND are generally userspace mappings of kernel pages,
+   such as the VDSO page, relay channel pages, etc. These pages
    are inherently unevictable and are not managed on the LRU lists.
    mlock_fixup() treats these VMAs the same as hugetlbfs VMAs.  It calls
    make_pages_present() to populate the ptes.
diff --git a/arch/alpha/kernel/pci-sysfs.c b/arch/alpha/kernel/pci-sysfs.c
index 53649c7d0068..b51f7b4818cd 100644
--- a/arch/alpha/kernel/pci-sysfs.c
+++ b/arch/alpha/kernel/pci-sysfs.c
@@ -26,7 +26,7 @@ static int hose_mmap_page_range(struct pci_controller *hose,
                 base = sparse ? hose->sparse_io_base : hose->dense_io_base;
 
         vma->vm_pgoff += base >> PAGE_SHIFT;
-        vma->vm_flags |= (VM_IO | VM_RESERVED);
+        vma->vm_flags |= VM_IO | VM_DONTEXPAND | VM_DONTDUMP;
 
         return io_remap_pfn_range(vma, vma->vm_start, vma->vm_pgoff,
                                   vma->vm_end - vma->vm_start,
diff --git a/arch/ia64/kernel/perfmon.c b/arch/ia64/kernel/perfmon.c
index f388b4e18a37..ea39eba61ef5 100644
--- a/arch/ia64/kernel/perfmon.c
+++ b/arch/ia64/kernel/perfmon.c
@@ -2307,7 +2307,7 @@ pfm_smpl_buffer_alloc(struct task_struct *task, struct file *filp, pfm_context_t
          */
         vma->vm_mm           = mm;
         vma->vm_file         = get_file(filp);
-        vma->vm_flags        = VM_READ| VM_MAYREAD |VM_RESERVED;
+        vma->vm_flags        = VM_READ|VM_MAYREAD|VM_DONTEXPAND|VM_DONTDUMP;
         vma->vm_page_prot    = PAGE_READONLY; /* XXX may need to change */
 
         /*
diff --git a/arch/ia64/mm/init.c b/arch/ia64/mm/init.c
index 0eab454867a2..082e383c1b6f 100644
--- a/arch/ia64/mm/init.c
+++ b/arch/ia64/mm/init.c
@@ -138,7 +138,8 @@ ia64_init_addr_space (void)
                         vma->vm_mm = current->mm;
                         vma->vm_end = PAGE_SIZE;
                         vma->vm_page_prot = __pgprot(pgprot_val(PAGE_READONLY) | _PAGE_MA_NAT);
-                        vma->vm_flags = VM_READ | VM_MAYREAD | VM_IO | VM_RESERVED;
+                        vma->vm_flags = VM_READ | VM_MAYREAD | VM_IO |
+                                        VM_DONTEXPAND | VM_DONTDUMP;
                         down_write(&current->mm->mmap_sem);
                         if (insert_vm_struct(current->mm, vma)) {
                                 up_write(&current->mm->mmap_sem);
diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c
index 83e929e66f9d..721d4603a235 100644
--- a/arch/powerpc/kvm/book3s_hv.c
+++ b/arch/powerpc/kvm/book3s_hv.c
@@ -1183,7 +1183,7 @@ static const struct vm_operations_struct kvm_rma_vm_ops = {
 
 static int kvm_rma_mmap(struct file *file, struct vm_area_struct *vma)
 {
-        vma->vm_flags |= VM_RESERVED;
+        vma->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP;
         vma->vm_ops = &kvm_rma_vm_ops;
         return 0;
 }
diff --git a/arch/sparc/kernel/pci.c b/arch/sparc/kernel/pci.c
index acc8c838ff72..75b31bcdeadf 100644
--- a/arch/sparc/kernel/pci.c
+++ b/arch/sparc/kernel/pci.c
@@ -779,7 +779,7 @@ static int __pci_mmap_make_offset(struct pci_dev *pdev,
 static void __pci_mmap_set_flags(struct pci_dev *dev, struct vm_area_struct *vma,
                                             enum pci_mmap_state mmap_state)
 {
-        vma->vm_flags |= (VM_IO | VM_RESERVED);
+        vma->vm_flags |= VM_IO | VM_DONTEXPAND | VM_DONTDUMP;
 }
 
 /* Set vm_page_prot of VMA, as appropriate for this architecture, for a pci
diff --git a/arch/unicore32/kernel/process.c b/arch/unicore32/kernel/process.c
index b6f0458c3143..b008586dad75 100644
--- a/arch/unicore32/kernel/process.c
+++ b/arch/unicore32/kernel/process.c
@@ -380,7 +380,7 @@ int vectors_user_mapping(void)
         return install_special_mapping(mm, 0xffff0000, PAGE_SIZE,
                                        VM_READ | VM_EXEC |
                                        VM_MAYREAD | VM_MAYEXEC |
-                                       VM_RESERVED,
+                                       VM_DONTEXPAND | VM_DONTDUMP,
                                        NULL);
 }
 
diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c
index 5a16824cc2b3..fd28d86fe3d2 100644
--- a/arch/x86/xen/mmu.c
+++ b/arch/x86/xen/mmu.c
@@ -2451,8 +2451,7 @@ int xen_remap_domain_mfn_range(struct vm_area_struct *vma,
 
         prot = __pgprot(pgprot_val(prot) | _PAGE_IOMAP);
 
-        BUG_ON(!((vma->vm_flags & (VM_PFNMAP | VM_RESERVED | VM_IO)) ==
-                                (VM_PFNMAP | VM_RESERVED | VM_IO)));
+        BUG_ON(!((vma->vm_flags & (VM_PFNMAP | VM_IO)) == (VM_PFNMAP | VM_IO)));
 
         rmd.mfn = mfn;
         rmd.prot = prot;
diff --git a/drivers/char/mbcs.c b/drivers/char/mbcs.c
index 0c7d340b9ab9..f74e892711dd 100644
--- a/drivers/char/mbcs.c
+++ b/drivers/char/mbcs.c
@@ -507,7 +507,7 @@ static int mbcs_gscr_mmap(struct file *fp, struct vm_area_struct *vma)
 
         vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 
-        /* Remap-pfn-range will mark the range VM_IO and VM_RESERVED */
+        /* Remap-pfn-range will mark the range VM_IO */
         if (remap_pfn_range(vma,
                             vma->vm_start,
                             __pa(soft->gscr_addr) >> PAGE_SHIFT,
diff --git a/drivers/char/mem.c b/drivers/char/mem.c
index e5eedfa24c91..0537903c985b 100644
--- a/drivers/char/mem.c
+++ b/drivers/char/mem.c
@@ -322,7 +322,7 @@ static int mmap_mem(struct file *file, struct vm_area_struct *vma)
 
         vma->vm_ops = &mmap_mem_ops;
 
-        /* Remap-pfn-range will mark the range VM_IO and VM_RESERVED */
+        /* Remap-pfn-range will mark the range VM_IO */
         if (remap_pfn_range(vma,
                             vma->vm_start,
                             vma->vm_pgoff,
diff --git a/drivers/char/mspec.c b/drivers/char/mspec.c
index 845f97fd1832..e1f60f968fdd 100644
--- a/drivers/char/mspec.c
+++ b/drivers/char/mspec.c
@@ -286,7 +286,7 @@ mspec_mmap(struct file *file, struct vm_area_struct *vma,
         atomic_set(&vdata->refcnt, 1);
         vma->vm_private_data = vdata;
 
-        vma->vm_flags |= (VM_IO | VM_RESERVED | VM_PFNMAP | VM_DONTEXPAND);
+        vma->vm_flags |= VM_IO | VM_PFNMAP | VM_DONTEXPAND | VM_DONTDUMP;
         if (vdata->type == MSPEC_FETCHOP || vdata->type == MSPEC_UNCACHED)
                 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
         vma->vm_ops = &mspec_vm_ops;
diff --git a/drivers/gpu/drm/drm_gem.c b/drivers/gpu/drm/drm_gem.c
index 92177d5aedee..24efae464e2c 100644
--- a/drivers/gpu/drm/drm_gem.c
+++ b/drivers/gpu/drm/drm_gem.c
@@ -706,7 +706,7 @@ int drm_gem_mmap(struct file *filp, struct vm_area_struct *vma)
                 goto out_unlock;
         }
 
-        vma->vm_flags |= VM_RESERVED | VM_IO | VM_PFNMAP | VM_DONTEXPAND;
+        vma->vm_flags |= VM_IO | VM_PFNMAP | VM_DONTEXPAND | VM_DONTDUMP;
         vma->vm_ops = obj->dev->driver->gem_vm_ops;
         vma->vm_private_data = map->handle;
         vma->vm_page_prot =  pgprot_writecombine(vm_get_page_prot(vma->vm_flags));
diff --git a/drivers/gpu/drm/drm_vm.c b/drivers/gpu/drm/drm_vm.c
index 23a824e6a22a..db7bd292410b 100644
--- a/drivers/gpu/drm/drm_vm.c
+++ b/drivers/gpu/drm/drm_vm.c
@@ -514,8 +514,7 @@ static int drm_mmap_dma(struct file *filp, struct vm_area_struct *vma)
 
         vma->vm_ops = &drm_vm_dma_ops;
 
-        vma->vm_flags |= VM_RESERVED;   /* Don't swap */
-        vma->vm_flags |= VM_DONTEXPAND;
+        vma->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP;
 
         drm_vm_open_locked(dev, vma);
         return 0;
@@ -643,21 +642,16 @@ int drm_mmap_locked(struct file *filp, struct vm_area_struct *vma)
         case _DRM_SHM:
                 vma->vm_ops = &drm_vm_shm_ops;
                 vma->vm_private_data = (void *)map;
-                /* Don't let this area swap.  Change when
-                   DRM_KERNEL advisory is supported. */
-                vma->vm_flags |= VM_RESERVED;
                 break;
         case _DRM_SCATTER_GATHER:
                 vma->vm_ops = &drm_vm_sg_ops;
                 vma->vm_private_data = (void *)map;
-                vma->vm_flags |= VM_RESERVED;
                 vma->vm_page_prot = drm_dma_prot(map->type, vma);
                 break;
         default:
                 return -EINVAL; /* This should never happen. */
         }
-        vma->vm_flags |= VM_RESERVED;   /* Don't swap */
-        vma->vm_flags |= VM_DONTEXPAND;
+        vma->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP;
 
         drm_vm_open_locked(dev, vma);
         return 0;
diff --git a/drivers/gpu/drm/exynos/exynos_drm_gem.c b/drivers/gpu/drm/exynos/exynos_drm_gem.c
index fcdbe46914f7..d2545560664f 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_gem.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_gem.c
@@ -500,7 +500,7 @@ static int exynos_drm_gem_mmap_buffer(struct file *filp,
 
         DRM_DEBUG_KMS("%s\n", __FILE__);
 
-        vma->vm_flags |= (VM_IO | VM_RESERVED);
+        vma->vm_flags |= VM_IO | VM_DONTEXPAND | VM_DONTDUMP;
 
         update_vm_cache_attr(exynos_gem_obj, vma);
 
diff --git a/drivers/gpu/drm/gma500/framebuffer.c b/drivers/gpu/drm/gma500/framebuffer.c
index 884ba73ac6ce..afded54dbb10 100644
--- a/drivers/gpu/drm/gma500/framebuffer.c
+++ b/drivers/gpu/drm/gma500/framebuffer.c
@@ -178,8 +178,7 @@ static int psbfb_mmap(struct fb_info *info, struct vm_area_struct *vma)
          */
         vma->vm_ops = &psbfb_vm_ops;
         vma->vm_private_data = (void *)psbfb;
-        vma->vm_flags |= VM_RESERVED | VM_IO |
-                                        VM_MIXEDMAP | VM_DONTEXPAND;
+        vma->vm_flags |= VM_IO | VM_MIXEDMAP | VM_DONTEXPAND | VM_DONTDUMP;
         return 0;
 }
 
diff --git a/drivers/gpu/drm/ttm/ttm_bo_vm.c b/drivers/gpu/drm/ttm/ttm_bo_vm.c
index a877813571a4..3ba72dbdc4bd 100644
--- a/drivers/gpu/drm/ttm/ttm_bo_vm.c
+++ b/drivers/gpu/drm/ttm/ttm_bo_vm.c
@@ -285,7 +285,7 @@ int ttm_bo_mmap(struct file *filp, struct vm_area_struct *vma,
          */
 
         vma->vm_private_data = bo;
-        vma->vm_flags |= VM_RESERVED | VM_IO | VM_MIXEDMAP | VM_DONTEXPAND;
+        vma->vm_flags |= VM_IO | VM_MIXEDMAP | VM_DONTEXPAND | VM_DONTDUMP;
         return 0;
 out_unref:
         ttm_bo_unref(&bo);
@@ -300,7 +300,7 @@ int ttm_fbdev_mmap(struct vm_area_struct *vma, struct ttm_buffer_object *bo)
 
         vma->vm_ops = &ttm_bo_vm_ops;
         vma->vm_private_data = ttm_bo_reference(bo);
-        vma->vm_flags |= VM_RESERVED | VM_IO | VM_MIXEDMAP | VM_DONTEXPAND;
+        vma->vm_flags |= VM_IO | VM_MIXEDMAP | VM_DONTEXPAND;
         return 0;
 }
 EXPORT_SYMBOL(ttm_fbdev_mmap);
diff --git a/drivers/gpu/drm/udl/udl_fb.c b/drivers/gpu/drm/udl/udl_fb.c
index 67df842fbb33..69a2b16f42a6 100644
--- a/drivers/gpu/drm/udl/udl_fb.c
+++ b/drivers/gpu/drm/udl/udl_fb.c
@@ -243,7 +243,7 @@ static int udl_fb_mmap(struct fb_info *info, struct vm_area_struct *vma)
                         size = 0;
         }
 
-        vma->vm_flags |= VM_RESERVED;   /* avoid to swap out this VMA */
+        /* VM_IO | VM_DONTEXPAND | VM_DONTDUMP are set by remap_pfn_range() */
         return 0;
 }
 
diff --git a/drivers/infiniband/hw/ehca/ehca_uverbs.c b/drivers/infiniband/hw/ehca/ehca_uverbs.c
index 45ee89b65c23..1a1d5d99fcf9 100644
--- a/drivers/infiniband/hw/ehca/ehca_uverbs.c
+++ b/drivers/infiniband/hw/ehca/ehca_uverbs.c
@@ -117,7 +117,7 @@ static int ehca_mmap_fw(struct vm_area_struct *vma, struct h_galpas *galpas,
         physical = galpas->user.fw_handle;
         vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
         ehca_gen_dbg("vsize=%llx physical=%llx", vsize, physical);
-        /* VM_IO | VM_RESERVED are set by remap_pfn_range() */
+        /* VM_IO | VM_DONTEXPAND | VM_DONTDUMP are set by remap_pfn_range() */
         ret = remap_4k_pfn(vma, vma->vm_start, physical >> EHCA_PAGESHIFT,
                            vma->vm_page_prot);
         if (unlikely(ret)) {
@@ -139,7 +139,7 @@ static int ehca_mmap_queue(struct vm_area_struct *vma, struct ipz_queue *queue,
         u64 start, ofs;
         struct page *page;
 
-        vma->vm_flags |= VM_RESERVED;
+        vma->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP;
         start = vma->vm_start;
         for (ofs = 0; ofs < queue->queue_length; ofs += PAGE_SIZE) {
                 u64 virt_addr = (u64)ipz_qeit_calc(queue, ofs);
diff --git a/drivers/infiniband/hw/ipath/ipath_file_ops.c b/drivers/infiniband/hw/ipath/ipath_file_ops.c
index 736d9edbdbe7..3eb7e454849b 100644
--- a/drivers/infiniband/hw/ipath/ipath_file_ops.c
+++ b/drivers/infiniband/hw/ipath/ipath_file_ops.c
@@ -1225,7 +1225,7 @@ static int mmap_kvaddr(struct vm_area_struct *vma, u64 pgaddr,
 
         vma->vm_pgoff = (unsigned long) addr >> PAGE_SHIFT;
         vma->vm_ops = &ipath_file_vm_ops;
-        vma->vm_flags |= VM_RESERVED | VM_DONTEXPAND;
+        vma->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP;
         ret = 1;
 
 bail:
diff --git a/drivers/infiniband/hw/qib/qib_file_ops.c b/drivers/infiniband/hw/qib/qib_file_ops.c
index faa44cb08071..959a5c4ff812 100644
--- a/drivers/infiniband/hw/qib/qib_file_ops.c
+++ b/drivers/infiniband/hw/qib/qib_file_ops.c
@@ -971,7 +971,7 @@ static int mmap_kvaddr(struct vm_area_struct *vma, u64 pgaddr,
 
         vma->vm_pgoff = (unsigned long) addr >> PAGE_SHIFT;
         vma->vm_ops = &qib_file_vm_ops;
-        vma->vm_flags |= VM_RESERVED | VM_DONTEXPAND;
+        vma->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP;
         ret = 1;
 
 bail:
diff --git a/drivers/media/pci/meye/meye.c b/drivers/media/pci/meye/meye.c
index 7bc775219f97..e5a76da86081 100644
--- a/drivers/media/pci/meye/meye.c
+++ b/drivers/media/pci/meye/meye.c
@@ -1647,7 +1647,7 @@ static int meye_mmap(struct file *file, struct vm_area_struct *vma)
 
         vma->vm_ops = &meye_vm_ops;
         vma->vm_flags &= ~VM_IO;        /* not I/O memory */
-        vma->vm_flags |= VM_RESERVED;   /* avoid to swap out this VMA */
+        vma->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP;
         vma->vm_private_data = (void *) (offset / gbufsize);
         meye_vm_open(vma);
 
diff --git a/drivers/media/platform/omap/omap_vout.c b/drivers/media/platform/omap/omap_vout.c
index 66ac21d466af..134016f0e660 100644
--- a/drivers/media/platform/omap/omap_vout.c
+++ b/drivers/media/platform/omap/omap_vout.c
@@ -911,7 +911,7 @@ static int omap_vout_mmap(struct file *file, struct vm_area_struct *vma)
 
         q->bufs[i]->baddr = vma->vm_start;
 
-        vma->vm_flags |= VM_RESERVED;
+        vma->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP;
         vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
         vma->vm_ops = &omap_vout_vm_ops;
         vma->vm_private_data = (void *) vout;
diff --git a/drivers/media/platform/vino.c b/drivers/media/platform/vino.c
index 790d96cffeea..70b0bf4b2900 100644
--- a/drivers/media/platform/vino.c
+++ b/drivers/media/platform/vino.c
@@ -3950,7 +3950,7 @@ found:
 
         fb->map_count = 1;
 
-        vma->vm_flags |= VM_DONTEXPAND | VM_RESERVED;
+        vma->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP;
         vma->vm_flags &= ~VM_IO;
         vma->vm_private_data = fb;
         vma->vm_file = file;
diff --git a/drivers/media/usb/sn9c102/sn9c102_core.c b/drivers/media/usb/sn9c102/sn9c102_core.c
index 19ea780b16ff..5bfc8e2f018f 100644
--- a/drivers/media/usb/sn9c102/sn9c102_core.c
+++ b/drivers/media/usb/sn9c102/sn9c102_core.c
@@ -2126,8 +2126,7 @@ static int sn9c102_mmap(struct file* filp, struct vm_area_struct *vma)
                 return -EINVAL;
         }
 
-        vma->vm_flags |= VM_IO;
-        vma->vm_flags |= VM_RESERVED;
+        vma->vm_flags |= VM_IO | VM_DONTEXPAND | VM_DONTDUMP;
 
         pos = cam->frame[i].bufmem;
         while (size > 0) { /* size is page-aligned */
diff --git a/drivers/media/usb/usbvision/usbvision-video.c b/drivers/media/usb/usbvision/usbvision-video.c
index f67018ed3795..5c36a57e6590 100644
--- a/drivers/media/usb/usbvision/usbvision-video.c
+++ b/drivers/media/usb/usbvision/usbvision-video.c
@@ -1108,8 +1108,7 @@ static int usbvision_mmap(struct file *file, struct vm_area_struct *vma)
         }
 
         /* VM_IO is eventually going to replace PageReserved altogether */
-        vma->vm_flags |= VM_IO;
-        vma->vm_flags |= VM_RESERVED;   /* avoid to swap out this VMA */
+        vma->vm_flags |= VM_IO | VM_DONTEXPAND | VM_DONTDUMP;
 
         pos = usbvision->frame[i].data;
         while (size > 0) {
diff --git a/drivers/media/v4l2-core/videobuf-dma-sg.c b/drivers/media/v4l2-core/videobuf-dma-sg.c
index f300deafd268..828e7c10bd70 100644
--- a/drivers/media/v4l2-core/videobuf-dma-sg.c
+++ b/drivers/media/v4l2-core/videobuf-dma-sg.c
@@ -582,7 +582,7 @@ static int __videobuf_mmap_mapper(struct videobuf_queue *q,
         map->count    = 1;
         map->q        = q;
         vma->vm_ops   = &videobuf_vm_ops;
-        vma->vm_flags |= VM_DONTEXPAND | VM_RESERVED;
+        vma->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP;
         vma->vm_flags &= ~VM_IO; /* using shared anonymous pages */
         vma->vm_private_data = map;
         dprintk(1, "mmap %p: q=%p %08lx-%08lx pgoff %08lx bufs %d-%d\n",
diff --git a/drivers/media/v4l2-core/videobuf-vmalloc.c b/drivers/media/v4l2-core/videobuf-vmalloc.c
index df142580e44c..2ff7fcc77b11 100644
--- a/drivers/media/v4l2-core/videobuf-vmalloc.c
+++ b/drivers/media/v4l2-core/videobuf-vmalloc.c
@@ -270,7 +270,7 @@ static int __videobuf_mmap_mapper(struct videobuf_queue *q,
         }
 
         vma->vm_ops          = &videobuf_vm_ops;
-        vma->vm_flags       |= VM_DONTEXPAND | VM_RESERVED;
+        vma->vm_flags       |= VM_DONTEXPAND | VM_DONTDUMP;
         vma->vm_private_data = map;
 
         dprintk(1, "mmap %p: q=%p %08lx-%08lx (%lx) pgoff %08lx buf %d\n",
diff --git a/drivers/media/v4l2-core/videobuf2-memops.c b/drivers/media/v4l2-core/videobuf2-memops.c
index 504cd4cbe29e..051ea3571b20 100644
--- a/drivers/media/v4l2-core/videobuf2-memops.c
+++ b/drivers/media/v4l2-core/videobuf2-memops.c
@@ -163,7 +163,7 @@ int vb2_mmap_pfn_range(struct vm_area_struct *vma, unsigned long paddr,
                 return ret;
         }
 
-        vma->vm_flags           |= VM_DONTEXPAND | VM_RESERVED;
+        vma->vm_flags           |= VM_DONTEXPAND | VM_DONTDUMP;
         vma->vm_private_data    = priv;
         vma->vm_ops             = vm_ops;
 
diff --git a/drivers/misc/carma/carma-fpga.c b/drivers/misc/carma/carma-fpga.c
index 0c43297ed9ac..8835eabb3b87 100644
--- a/drivers/misc/carma/carma-fpga.c
+++ b/drivers/misc/carma/carma-fpga.c
@@ -1243,8 +1243,6 @@ static int data_mmap(struct file *filp, struct vm_area_struct *vma)
                 return -EINVAL;
         }
 
-        /* IO memory (stop cacheing) */
-        vma->vm_flags |= VM_IO | VM_RESERVED;
         vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 
         return io_remap_pfn_range(vma, vma->vm_start, addr, vsize,
diff --git a/drivers/misc/sgi-gru/grufile.c b/drivers/misc/sgi-gru/grufile.c
index ecafa4ba238b..492c8cac69ac 100644
--- a/drivers/misc/sgi-gru/grufile.c
+++ b/drivers/misc/sgi-gru/grufile.c
@@ -108,9 +108,8 @@ static int gru_file_mmap(struct file *file, struct vm_area_struct *vma)
                                 vma->vm_end & (GRU_GSEG_PAGESIZE - 1))
                 return -EINVAL;
 
-        vma->vm_flags |=
-            (VM_IO | VM_DONTCOPY | VM_LOCKED | VM_DONTEXPAND | VM_PFNMAP |
-                        VM_RESERVED);
+        vma->vm_flags |= VM_IO | VM_PFNMAP | VM_LOCKED |
+                         VM_DONTCOPY | VM_DONTEXPAND | VM_DONTDUMP;
         vma->vm_page_prot = PAGE_SHARED;
         vma->vm_ops = &gru_vm_ops;
 
diff --git a/drivers/mtd/mtdchar.c b/drivers/mtd/mtdchar.c
index a6e74514e662..73ae81a629f2 100644
--- a/drivers/mtd/mtdchar.c
+++ b/drivers/mtd/mtdchar.c
@@ -1182,7 +1182,7 @@ static int mtdchar_mmap(struct file *file, struct vm_area_struct *vma)
                         return -EINVAL;
                 if (set_vm_offset(vma, off) < 0)
                         return -EINVAL;
-                vma->vm_flags |= VM_IO | VM_RESERVED;
+                vma->vm_flags |= VM_IO | VM_DONTEXPAND | VM_DONTDUMP;
 
 #ifdef pgprot_noncached
                 if (file->f_flags & O_DSYNC || off >= __pa(high_memory))
diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c
index 9c5c5f2b3962..be2c9a6561ff 100644
--- a/drivers/scsi/sg.c
+++ b/drivers/scsi/sg.c
@@ -1257,7 +1257,7 @@ sg_mmap(struct file *filp, struct vm_area_struct *vma)
         }
 
         sfp->mmap_called = 1;
-        vma->vm_flags |= VM_RESERVED;
+        vma->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP;
         vma->vm_private_data = sfp;
         vma->vm_ops = &sg_mmap_vm_ops;
         return 0;
diff --git a/drivers/staging/omapdrm/omap_gem_dmabuf.c b/drivers/staging/omapdrm/omap_gem_dmabuf.c
index 42728e0cc194..c6f3ef6f57b9 100644
--- a/drivers/staging/omapdrm/omap_gem_dmabuf.c
+++ b/drivers/staging/omapdrm/omap_gem_dmabuf.c
@@ -160,7 +160,7 @@ static int omap_gem_dmabuf_mmap(struct dma_buf *buffer,
                 goto out_unlock;
         }
 
-        vma->vm_flags |= VM_RESERVED | VM_IO | VM_PFNMAP | VM_DONTEXPAND;
+        vma->vm_flags |= VM_IO | VM_PFNMAP | VM_DONTEXPAND | VM_DONTDUMP;
         vma->vm_ops = obj->dev->driver->gem_vm_ops;
         vma->vm_private_data = obj;
         vma->vm_page_prot =  pgprot_writecombine(vm_get_page_prot(vma->vm_flags));
diff --git a/drivers/staging/tidspbridge/rmgr/drv_interface.c b/drivers/staging/tidspbridge/rmgr/drv_interface.c
index bddea1d3b2c3..701a11ac676d 100644
--- a/drivers/staging/tidspbridge/rmgr/drv_interface.c
+++ b/drivers/staging/tidspbridge/rmgr/drv_interface.c
@@ -261,7 +261,7 @@ static int bridge_mmap(struct file *filp, struct vm_area_struct *vma)
 {
         u32 status;
 
-        vma->vm_flags |= VM_RESERVED | VM_IO;
+        /* VM_IO | VM_DONTEXPAND | VM_DONTDUMP are set by remap_pfn_range() */
         vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 
         dev_dbg(bridge, "%s: vm filp %p start %lx end %lx page_prot %ulx "
diff --git a/drivers/uio/uio.c b/drivers/uio/uio.c
index a783d533a1a6..5110f367f1f1 100644
--- a/drivers/uio/uio.c
+++ b/drivers/uio/uio.c
@@ -653,8 +653,6 @@ static int uio_mmap_physical(struct vm_area_struct *vma)
         if (mi < 0)
                 return -EINVAL;
 
-        vma->vm_flags |= VM_IO | VM_RESERVED;
-
         vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 
         return remap_pfn_range(vma,
@@ -666,7 +664,7 @@ static int uio_mmap_physical(struct vm_area_struct *vma)
 
 static int uio_mmap_logical(struct vm_area_struct *vma)
 {
-        vma->vm_flags |= VM_RESERVED;
+        vma->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP;
         vma->vm_ops = &uio_vm_ops;
         uio_vma_open(vma);
         return 0;
diff --git a/drivers/usb/mon/mon_bin.c b/drivers/usb/mon/mon_bin.c
index 91cd85076a44..9a62e89d6dc0 100644
--- a/drivers/usb/mon/mon_bin.c
+++ b/drivers/usb/mon/mon_bin.c
@@ -1247,7 +1247,7 @@ static int mon_bin_mmap(struct file *filp, struct vm_area_struct *vma)
 {
         /* don't do anything here: "fault" will set up page table entries */
         vma->vm_ops = &mon_bin_vm_ops;
-        vma->vm_flags |= VM_RESERVED;
+        vma->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP;
         vma->vm_private_data = filp->private_data;
         mon_bin_vma_open(vma);
         return 0;
diff --git a/drivers/video/68328fb.c b/drivers/video/68328fb.c
index a425d65d5ba2..fa44fbed397d 100644
--- a/drivers/video/68328fb.c
+++ b/drivers/video/68328fb.c
@@ -400,7 +400,7 @@ static int mc68x328fb_mmap(struct fb_info *info, struct vm_area_struct *vma)
 #ifndef MMU
         /* this is uClinux (no MMU) specific code */
 
-        vma->vm_flags |= VM_RESERVED;
+        vma->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP;
         vma->vm_start = videomemory;
 
         return 0;
diff --git a/drivers/video/aty/atyfb_base.c b/drivers/video/aty/atyfb_base.c
index 3f2e8c13f1ca..868932f904ef 100644
--- a/drivers/video/aty/atyfb_base.c
+++ b/drivers/video/aty/atyfb_base.c
@@ -1942,8 +1942,7 @@ static int atyfb_mmap(struct fb_info *info, struct vm_area_struct *vma)
         off = vma->vm_pgoff << PAGE_SHIFT;
         size = vma->vm_end - vma->vm_start;
 
-        /* To stop the swapper from even considering these pages. */
-        vma->vm_flags |= (VM_IO | VM_RESERVED);
+        /* VM_IO | VM_DONTEXPAND | VM_DONTDUMP are set by remap_pfn_range() */
 
         if (((vma->vm_pgoff == 0) && (size == info->fix.smem_len)) ||
             ((off == info->fix.smem_len) && (size == PAGE_SIZE)))
diff --git a/drivers/video/fb-puv3.c b/drivers/video/fb-puv3.c
index 60a787fa32cf..7d106f1f4906 100644
--- a/drivers/video/fb-puv3.c
+++ b/drivers/video/fb-puv3.c
@@ -653,9 +653,8 @@ int unifb_mmap(struct fb_info *info,
                                 vma->vm_page_prot))
                 return -EAGAIN;
 
-        vma->vm_flags |= VM_RESERVED;   /* avoid to swap out this VMA */
+        /* VM_IO | VM_DONTEXPAND | VM_DONTDUMP are set by remap_pfn_range() */
         return 0;
-
 }
 
 static struct fb_ops unifb_ops = {
diff --git a/drivers/video/fb_defio.c b/drivers/video/fb_defio.c
index 64cda560c488..88cad6b8b479 100644
--- a/drivers/video/fb_defio.c
+++ b/drivers/video/fb_defio.c
@@ -166,7 +166,7 @@ static const struct address_space_operations fb_deferred_io_aops = {
 static int fb_deferred_io_mmap(struct fb_info *info, struct vm_area_struct *vma)
 {
         vma->vm_ops = &fb_deferred_io_vm_ops;
-        vma->vm_flags |= ( VM_RESERVED | VM_DONTEXPAND );
+        vma->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP;
         if (!(info->flags & FBINFO_VIRTFB))
                 vma->vm_flags |= VM_IO;
         vma->vm_private_data = info;
diff --git a/drivers/video/fbmem.c b/drivers/video/fbmem.c
index 0dff12a1daef..3ff0105a496a 100644
--- a/drivers/video/fbmem.c
+++ b/drivers/video/fbmem.c
@@ -1410,8 +1410,7 @@ fb_mmap(struct file *file, struct vm_area_struct * vma)
                 return -EINVAL;
         off += start;
         vma->vm_pgoff = off >> PAGE_SHIFT;
-        /* This is an IO map - tell maydump to skip this VMA */
-        vma->vm_flags |= VM_IO | VM_RESERVED;
+        /* VM_IO | VM_DONTEXPAND | VM_DONTDUMP are set by io_remap_pfn_range()*/
         vma->vm_page_prot = vm_get_page_prot(vma->vm_flags);
         fb_pgprotect(file, vma, off);
         if (io_remap_pfn_range(vma, vma->vm_start, off >> PAGE_SHIFT,
diff --git a/drivers/video/gbefb.c b/drivers/video/gbefb.c
index 7e7b7a9ba274..05e2a8a99d8f 100644
--- a/drivers/video/gbefb.c
+++ b/drivers/video/gbefb.c
@@ -1024,7 +1024,7 @@ static int gbefb_mmap(struct fb_info *info,
         pgprot_val(vma->vm_page_prot) =
                 pgprot_fb(pgprot_val(vma->vm_page_prot));
 
-        vma->vm_flags |= VM_IO | VM_RESERVED;
+        /* VM_IO | VM_DONTEXPAND | VM_DONTDUMP are set by remap_pfn_range() */
 
         /* look for the starting tile */
         tile = &gbe_tiles.cpu[offset >> TILE_SHIFT];
diff --git a/drivers/video/omap2/omapfb/omapfb-main.c b/drivers/video/omap2/omapfb/omapfb-main.c
index 3c39aa8de928..15373f4aee19 100644
--- a/drivers/video/omap2/omapfb/omapfb-main.c
+++ b/drivers/video/omap2/omapfb/omapfb-main.c
@@ -1128,7 +1128,7 @@ static int omapfb_mmap(struct fb_info *fbi, struct vm_area_struct *vma)
         DBG("user mmap region start %lx, len %d, off %lx\n", start, len, off);
 
         vma->vm_pgoff = off >> PAGE_SHIFT;
-        vma->vm_flags |= VM_IO | VM_RESERVED;
+        /* VM_IO | VM_DONTEXPAND | VM_DONTDUMP are set by remap_pfn_range() */
         vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
         vma->vm_ops = &mmap_user_ops;
         vma->vm_private_data = rg;
diff --git a/drivers/video/sbuslib.c b/drivers/video/sbuslib.c
index 3c1de981a18c..296afae442f4 100644
--- a/drivers/video/sbuslib.c
+++ b/drivers/video/sbuslib.c
@@ -57,9 +57,8 @@ int sbusfb_mmap_helper(struct sbus_mmap_map *map,
 
         off = vma->vm_pgoff << PAGE_SHIFT;
 
-        /* To stop the swapper from even considering these pages */
-        vma->vm_flags |= (VM_IO | VM_RESERVED);
-        
+        /* VM_IO | VM_DONTEXPAND | VM_DONTDUMP are set by remap_pfn_range() */
+
         vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 
         /* Each page, see which map applies */
diff --git a/drivers/video/smscufx.c b/drivers/video/smscufx.c
index 5533a32c6ca1..97bd6620c364 100644
--- a/drivers/video/smscufx.c
+++ b/drivers/video/smscufx.c
@@ -803,7 +803,6 @@ static int ufx_ops_mmap(struct fb_info *info, struct vm_area_struct *vma)
                         size = 0;
         }
 
-        vma->vm_flags |= VM_RESERVED;   /* avoid to swap out this VMA */
         return 0;
 }
 
diff --git a/drivers/video/udlfb.c b/drivers/video/udlfb.c
index 8af64148294b..f45eba3d6150 100644
--- a/drivers/video/udlfb.c
+++ b/drivers/video/udlfb.c
@@ -345,7 +345,6 @@ static int dlfb_ops_mmap(struct fb_info *info, struct vm_area_struct *vma)
                         size = 0;
         }
 
-        vma->vm_flags |= VM_RESERVED;   /* avoid to swap out this VMA */
         return 0;
 }
 
diff --git a/drivers/video/vermilion/vermilion.c b/drivers/video/vermilion/vermilion.c
index 970e43d13f52..89aef343e295 100644
--- a/drivers/video/vermilion/vermilion.c
+++ b/drivers/video/vermilion/vermilion.c
@@ -1018,7 +1018,6 @@ static int vmlfb_mmap(struct fb_info *info, struct vm_area_struct *vma)
         offset += vinfo->vram_start;
         pgprot_val(vma->vm_page_prot) |= _PAGE_PCD;
         pgprot_val(vma->vm_page_prot) &= ~_PAGE_PWT;
-        vma->vm_flags |= VM_RESERVED | VM_IO;
         if (remap_pfn_range(vma, vma->vm_start, offset >> PAGE_SHIFT,
                                                 size, vma->vm_page_prot))
                 return -EAGAIN;
diff --git a/drivers/video/vfb.c b/drivers/video/vfb.c
index 501a922aa9dc..c7f692525b88 100644
--- a/drivers/video/vfb.c
+++ b/drivers/video/vfb.c
@@ -439,7 +439,6 @@ static int vfb_mmap(struct fb_info *info,
                         size = 0;
         }
 
-        vma->vm_flags |= VM_RESERVED;   /* avoid to swap out this VMA */
         return 0;
 
 }
diff --git a/drivers/xen/gntalloc.c b/drivers/xen/gntalloc.c
index 934985d14c24..4097987b330e 100644
--- a/drivers/xen/gntalloc.c
+++ b/drivers/xen/gntalloc.c
@@ -535,7 +535,7 @@ static int gntalloc_mmap(struct file *filp, struct vm_area_struct *vma)
 
         vma->vm_private_data = vm_priv;
 
-        vma->vm_flags |= VM_RESERVED | VM_DONTEXPAND;
+        vma->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP;
 
         vma->vm_ops = &gntalloc_vmops;
 
diff --git a/drivers/xen/gntdev.c b/drivers/xen/gntdev.c
index 5df9fd847b2e..610bfc6be177 100644
--- a/drivers/xen/gntdev.c
+++ b/drivers/xen/gntdev.c
@@ -720,7 +720,7 @@ static int gntdev_mmap(struct file *flip, struct vm_area_struct *vma)
 
         vma->vm_ops = &gntdev_vmops;
 
-        vma->vm_flags |= VM_RESERVED|VM_DONTEXPAND;
+        vma->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP;
 
         if (use_ptemod)
                 vma->vm_flags |= VM_DONTCOPY;
diff --git a/drivers/xen/privcmd.c b/drivers/xen/privcmd.c
index ef6389580b8c..8adb9cc267f9 100644
--- a/drivers/xen/privcmd.c
+++ b/drivers/xen/privcmd.c
@@ -455,7 +455,8 @@ static int privcmd_mmap(struct file *file, struct vm_area_struct *vma)
 {
         /* DONTCOPY is essential for Xen because copy_page_range doesn't know
          * how to recreate these mappings */
-        vma->vm_flags |= VM_RESERVED | VM_IO | VM_DONTCOPY | VM_PFNMAP;
+        vma->vm_flags |= VM_IO | VM_PFNMAP | VM_DONTCOPY |
+                         VM_DONTEXPAND | VM_DONTDUMP;
         vma->vm_ops = &privcmd_vm_ops;
         vma->vm_private_data = NULL;
 
diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c
index 2b72d26e2e4b..e800dec958c3 100644
--- a/fs/binfmt_elf.c
+++ b/fs/binfmt_elf.c
@@ -1135,7 +1135,7 @@ static unsigned long vma_dump_size(struct vm_area_struct *vma,
         }
 
         /* Do not dump I/O mapped devices or special mappings */
-        if (vma->vm_flags & (VM_IO | VM_RESERVED))
+        if (vma->vm_flags & VM_IO)
                 return 0;
 
         /* By default, dump shared memory if mapped from an anonymous file. */
diff --git a/fs/binfmt_elf_fdpic.c b/fs/binfmt_elf_fdpic.c
index 08d812b32282..262db114ff01 100644
--- a/fs/binfmt_elf_fdpic.c
+++ b/fs/binfmt_elf_fdpic.c
@@ -1205,7 +1205,7 @@ static int maydump(struct vm_area_struct *vma, unsigned long mm_flags)
         int dump_ok;
 
         /* Do not dump I/O mapped devices or special mappings */
-        if (vma->vm_flags & (VM_IO | VM_RESERVED)) {
+        if (vma->vm_flags & VM_IO) {
                 kdcore("%08lx: %08lx: no (IO)", vma->vm_start, vma->vm_flags);
                 return 0;
         }
diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c
index 9460120a5170..0a0ab8e21b19 100644
--- a/fs/hugetlbfs/inode.c
+++ b/fs/hugetlbfs/inode.c
@@ -110,7 +110,7 @@ static int hugetlbfs_file_mmap(struct file *file, struct vm_area_struct *vma)
          * way when do_mmap_pgoff unwinds (may be important on powerpc
          * and ia64).
          */
-        vma->vm_flags |= VM_HUGETLB | VM_RESERVED;
+        vma->vm_flags |= VM_HUGETLB | VM_DONTEXPAND | VM_DONTDUMP;
         vma->vm_ops = &hugetlb_vm_ops;
 
         if (vma->vm_pgoff & (~huge_page_mask(h) >> PAGE_SHIFT))
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index 4540b8f76f16..79827ce03e3b 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -54,7 +54,7 @@ void task_mem(struct seq_file *m, struct mm_struct *mm)
                 "VmPTE:\t%8lu kB\n"
                 "VmSwap:\t%8lu kB\n",
                 hiwater_vm << (PAGE_SHIFT-10),
-                (total_vm - mm->reserved_vm) << (PAGE_SHIFT-10),
+                total_vm << (PAGE_SHIFT-10),
                 mm->locked_vm << (PAGE_SHIFT-10),
                 mm->pinned_vm << (PAGE_SHIFT-10),
                 hiwater_rss << (PAGE_SHIFT-10),
diff --git a/include/linux/mempolicy.h b/include/linux/mempolicy.h
index 95b738c7abff..ba7a0ff19d39 100644
--- a/include/linux/mempolicy.h
+++ b/include/linux/mempolicy.h
@@ -239,7 +239,7 @@ extern int mpol_to_str(char *buffer, int maxlen, struct mempolicy *pol,
 /* Check if a vma is migratable */
 static inline int vma_migratable(struct vm_area_struct *vma)
 {
-        if (vma->vm_flags & (VM_IO|VM_HUGETLB|VM_PFNMAP|VM_RESERVED))
+        if (vma->vm_flags & (VM_IO | VM_HUGETLB | VM_PFNMAP))
                 return 0;
         /*
          * Migration allocates pages in the highest zone. If we cannot
diff --git a/include/linux/mm.h b/include/linux/mm.h
index dc08d558e058..0514fe9d3c84 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -96,7 +96,6 @@ extern unsigned int kobjsize(const void *objp);
 
 #define VM_DONTCOPY     0x00020000      /* Do not copy this vma on fork */
 #define VM_DONTEXPAND   0x00040000      /* Cannot expand with mremap() */
-#define VM_RESERVED     0x00080000      /* Count as reserved_vm like IO */
 #define VM_ACCOUNT      0x00100000      /* Is a VM accounted object */
 #define VM_NORESERVE    0x00200000      /* should the VM suppress accounting */
 #define VM_HUGETLB      0x00400000      /* Huge TLB Page VM */
@@ -148,7 +147,7 @@ extern unsigned int kobjsize(const void *objp);
  * Special vmas that are non-mergable, non-mlock()able.
  * Note: mm/huge_memory.c VM_NO_THP depends on this definition.
  */
-#define VM_SPECIAL (VM_IO | VM_DONTEXPAND | VM_RESERVED | VM_PFNMAP)
+#define VM_SPECIAL (VM_IO | VM_DONTEXPAND | VM_PFNMAP)
 
 /*
  * mapping from the currently active vm_flags protection bits (the
diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
index 58d3173eb365..a57a43f5ca7c 100644
--- a/include/linux/mm_types.h
+++ b/include/linux/mm_types.h
@@ -349,7 +349,6 @@ struct mm_struct {
         unsigned long shared_vm;        /* Shared pages (files) */
         unsigned long exec_vm;          /* VM_EXEC & ~VM_WRITE */
         unsigned long stack_vm;         /* VM_GROWSUP/DOWN */
-        unsigned long reserved_vm;      /* VM_RESERVED|VM_IO pages */
         unsigned long def_flags;
         unsigned long nr_ptes;          /* Page table pages */
         unsigned long start_code, end_code, start_data, end_data;
diff --git a/kernel/events/core.c b/kernel/events/core.c
index f16f3c58f11a..cda3ebd49e86 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -3671,7 +3671,7 @@ unlock:
                 atomic_inc(&event->mmap_count);
         mutex_unlock(&event->mmap_mutex);
 
-        vma->vm_flags |= VM_RESERVED;
+        vma->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP;
         vma->vm_ops = &perf_mmap_vmops;
 
         return ret;
diff --git a/mm/ksm.c b/mm/ksm.c
index f9ccb16559ee..9638620a7530 100644
--- a/mm/ksm.c
+++ b/mm/ksm.c
@@ -1469,8 +1469,7 @@ int ksm_madvise(struct vm_area_struct *vma, unsigned long start,
                  */
                 if (*vm_flags & (VM_MERGEABLE | VM_SHARED  | VM_MAYSHARE   |
                                  VM_PFNMAP    | VM_IO      | VM_DONTEXPAND |
-                                 VM_RESERVED  | VM_HUGETLB |
-                                 VM_NONLINEAR | VM_MIXEDMAP))
+                                 VM_HUGETLB | VM_NONLINEAR | VM_MIXEDMAP))
                         return 0;               /* just ignore the advice */
 
 #ifdef VM_SAO
diff --git a/mm/memory.c b/mm/memory.c
index 7b1e4feaec06..e09c04813186 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -2297,14 +2297,13 @@ int remap_pfn_range(struct vm_area_struct *vma, unsigned long addr,
          * rest of the world about it:
          *   VM_IO tells people not to look at these pages
          *      (accesses can have side effects).
-         *   VM_RESERVED is specified all over the place, because
-         *      in 2.4 it kept swapout's vma scan off this vma; but
-         *      in 2.6 the LRU scan won't even find its pages, so this
-         *      flag means no more than count its pages in reserved_vm,
-         *      and omit it from core dump, even when VM_IO turned off.
          *   VM_PFNMAP tells the core MM that the base pages are just
          *      raw PFN mappings, and do not have a "struct page" associated
          *      with them.
+         *   VM_DONTEXPAND
+         *      Disable vma merging and expanding with mremap().
+         *   VM_DONTDUMP
+         *      Omit vma from core dump, even when VM_IO turned off.
          *
          * There's a horrible special case to handle copy-on-write
          * behaviour that some programs depend on. We mark the "original"
@@ -2321,7 +2320,7 @@ int remap_pfn_range(struct vm_area_struct *vma, unsigned long addr,
         if (err)
                 return -EINVAL;
 
-        vma->vm_flags |= VM_IO | VM_RESERVED | VM_PFNMAP;
+        vma->vm_flags |= VM_IO | VM_PFNMAP | VM_DONTEXPAND | VM_DONTDUMP;
 
         BUG_ON(addr >= end);
         pfn -= addr >> PAGE_SHIFT;
diff --git a/mm/mlock.c b/mm/mlock.c
index ef726e8aa8e9..a948be4b7ba7 100644
--- a/mm/mlock.c
+++ b/mm/mlock.c
@@ -227,7 +227,7 @@ long mlock_vma_pages_range(struct vm_area_struct *vma,
         if (vma->vm_flags & (VM_IO | VM_PFNMAP))
                 goto no_mlock;
 
-        if (!((vma->vm_flags & (VM_DONTEXPAND | VM_RESERVED)) ||
+        if (!((vma->vm_flags & VM_DONTEXPAND) ||
                         is_vm_hugetlb_page(vma) ||
                         vma == get_gate_vma(current->mm))) {
 
diff --git a/mm/mmap.c b/mm/mmap.c
index c1ad2e78ea58..a76042dc806d 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -945,8 +945,6 @@ void vm_stat_account(struct mm_struct *mm, unsigned long flags,
                         mm->exec_vm += pages;
         } else if (flags & stack_flags)
                 mm->stack_vm += pages;
-        if (flags & (VM_RESERVED|VM_IO))
-                mm->reserved_vm += pages;
 }
 #endif /* CONFIG_PROC_FS */
 
diff --git a/mm/nommu.c b/mm/nommu.c
index 9c4a7b63a4df..12e84e69dd06 100644
--- a/mm/nommu.c
+++ b/mm/nommu.c
@@ -1811,7 +1811,7 @@ int remap_pfn_range(struct vm_area_struct *vma, unsigned long addr,
         if (addr != (pfn << PAGE_SHIFT))
                 return -EINVAL;
 
-        vma->vm_flags |= VM_IO | VM_RESERVED | VM_PFNMAP;
+        vma->vm_flags |= VM_IO | VM_PFNMAP | VM_DONTEXPAND | VM_DONTDUMP;
         return 0;
 }
 EXPORT_SYMBOL(remap_pfn_range);
diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index 2bb90b1d241c..8de704679bfc 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -2163,8 +2163,7 @@ int remap_vmalloc_range(struct vm_area_struct *vma, void *addr,
                 usize -= PAGE_SIZE;
         } while (usize > 0);
 
-        /* Prevent "things" like memory migration? VM_flags need a cleanup... */
-        vma->vm_flags |= VM_RESERVED;
+        vma->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP;
 
         return 0;
 }
diff --git a/security/selinux/selinuxfs.c b/security/selinux/selinuxfs.c
index 55af8c5b57e6..3a6e8731646c 100644
--- a/security/selinux/selinuxfs.c
+++ b/security/selinux/selinuxfs.c
@@ -485,7 +485,7 @@ static int sel_mmap_policy(struct file *filp, struct vm_area_struct *vma)
                         return -EACCES;
         }
 
-        vma->vm_flags |= VM_RESERVED;
+        vma->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP;
         vma->vm_ops = &sel_mmap_policy_ops;
 
         return 0;
diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c
index 20554eff5a21..5e12e5bacbba 100644
--- a/sound/core/pcm_native.c
+++ b/sound/core/pcm_native.c
@@ -3039,7 +3039,7 @@ static int snd_pcm_mmap_status(struct snd_pcm_substream *substream, struct file
                 return -EINVAL;
         area->vm_ops = &snd_pcm_vm_ops_status;
         area->vm_private_data = substream;
-        area->vm_flags |= VM_RESERVED;
+        area->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP;
         return 0;
 }
 
@@ -3076,7 +3076,7 @@ static int snd_pcm_mmap_control(struct snd_pcm_substream *substream, struct file
                 return -EINVAL;
         area->vm_ops = &snd_pcm_vm_ops_control;
         area->vm_private_data = substream;
-        area->vm_flags |= VM_RESERVED;
+        area->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP;
         return 0;
 }
 #else /* ! coherent mmap */
@@ -3170,7 +3170,7 @@ static const struct vm_operations_struct snd_pcm_vm_ops_data_fault = {
 int snd_pcm_lib_default_mmap(struct snd_pcm_substream *substream,
                              struct vm_area_struct *area)
 {
-        area->vm_flags |= VM_RESERVED;
+        area->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP;
 #ifdef ARCH_HAS_DMA_MMAP_COHERENT
         if (!substream->ops->page &&
             substream->dma_buffer.dev.type == SNDRV_DMA_TYPE_DEV)
diff --git a/sound/usb/usx2y/us122l.c b/sound/usb/usx2y/us122l.c
index c4fd3b1d9592..d0323a693ba2 100644
--- a/sound/usb/usx2y/us122l.c
+++ b/sound/usb/usx2y/us122l.c
@@ -262,7 +262,7 @@ static int usb_stream_hwdep_mmap(struct snd_hwdep *hw,
         }
 
         area->vm_ops = &usb_stream_hwdep_vm_ops;
-        area->vm_flags |= VM_RESERVED;
+        area->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP;
         area->vm_private_data = us122l;
         atomic_inc(&us122l->mmap_count);
 out:
diff --git a/sound/usb/usx2y/usX2Yhwdep.c b/sound/usb/usx2y/usX2Yhwdep.c
index 04aafb43a13c..0b34dbc8f302 100644
--- a/sound/usb/usx2y/usX2Yhwdep.c
+++ b/sound/usb/usx2y/usX2Yhwdep.c
@@ -82,7 +82,7 @@ static int snd_us428ctls_mmap(struct snd_hwdep * hw, struct file *filp, struct v
                 us428->us428ctls_sharedmem->CtlSnapShotLast = -2;
         }
         area->vm_ops = &us428ctls_vm_ops;
-        area->vm_flags |= VM_RESERVED | VM_DONTEXPAND;
+        area->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP;
         area->vm_private_data = hw->private_data;
         return 0;
 }
diff --git a/sound/usb/usx2y/usx2yhwdeppcm.c b/sound/usb/usx2y/usx2yhwdeppcm.c
index 8e40b6e67e9e..cc56007791e0 100644
--- a/sound/usb/usx2y/usx2yhwdeppcm.c
+++ b/sound/usb/usx2y/usx2yhwdeppcm.c
@@ -723,7 +723,7 @@ static int snd_usX2Y_hwdep_pcm_mmap(struct snd_hwdep * hw, struct file *filp, st
                 return -ENODEV;
         }
         area->vm_ops = &snd_usX2Y_hwdep_pcm_vm_ops;
-        area->vm_flags |= VM_RESERVED | VM_DONTEXPAND;
+        area->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP;
         area->vm_private_data = hw->private_data;
         return 0;
 }