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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>
This commit is contained in:
Konstantin Khlebnikov 2012-10-08 16:29:02 -07:00 committed by Linus Torvalds
parent 0103bd16fb
commit 314e51b985
70 changed files with 77 additions and 105 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
Documentation/vm/unevictable-lru.txt
View File

@ -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.

2
arch/alpha/kernel/pci-sysfs.c
View File

@ -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,

2
arch/ia64/kernel/perfmon.c
View File

@ -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 */
/*

3
arch/ia64/mm/init.c
View File

@ -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);

2
arch/powerpc/kvm/book3s_hv.c
View File

@ -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;
}

2
arch/sparc/kernel/pci.c
View File

@ -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

2
arch/unicore32/kernel/process.c
View File

@ -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);
}

3
arch/x86/xen/mmu.c
View File

@ -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;

2
drivers/char/mbcs.c
View File

@ -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,

2
drivers/char/mem.c
View File

@ -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,

2
drivers/char/mspec.c
View File

@ -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;

2
drivers/gpu/drm/drm_gem.c
View File

@ -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));

10
drivers/gpu/drm/drm_vm.c
View File

@ -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;

2
drivers/gpu/drm/exynos/exynos_drm_gem.c
View File

@ -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);

3
drivers/gpu/drm/gma500/framebuffer.c
View File

@ -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;
}

4
drivers/gpu/drm/ttm/ttm_bo_vm.c
View File

@ -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);

2
drivers/gpu/drm/udl/udl_fb.c
View File

@ -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;
}

4
drivers/infiniband/hw/ehca/ehca_uverbs.c
View File

@ -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);

2
drivers/infiniband/hw/ipath/ipath_file_ops.c
View File

@ -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:

2
drivers/infiniband/hw/qib/qib_file_ops.c
View File

@ -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:

2
drivers/media/pci/meye/meye.c
View File

@ -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);

2
drivers/media/platform/omap/omap_vout.c
View File

@ -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;

2
drivers/media/platform/vino.c
View File

@ -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;

3
drivers/media/usb/sn9c102/sn9c102_core.c
View File

@ -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 */

3
drivers/media/usb/usbvision/usbvision-video.c
View File

@ -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) {

2
drivers/media/v4l2-core/videobuf-dma-sg.c
View File

@ -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",

2
drivers/media/v4l2-core/videobuf-vmalloc.c
View File

@ -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",

2
drivers/media/v4l2-core/videobuf2-memops.c
View File

@ -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;

2
drivers/misc/carma/carma-fpga.c
View File

@ -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,

5
drivers/misc/sgi-gru/grufile.c
View File

@ -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;

2
drivers/mtd/mtdchar.c
View File

@ -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))

2
drivers/scsi/sg.c
View File

@ -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;

2
drivers/staging/omapdrm/omap_gem_dmabuf.c
View File

@ -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));

2
drivers/staging/tidspbridge/rmgr/drv_interface.c
View File

@ -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 "

4
drivers/uio/uio.c
View File

@ -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;

2
drivers/usb/mon/mon_bin.c
View File

@ -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;

2
drivers/video/68328fb.c
View File

@ -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;

3
drivers/video/aty/atyfb_base.c
View File

@ -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)))

3
drivers/video/fb-puv3.c
View File

@ -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 = {

2
drivers/video/fb_defio.c
View File

@ -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;

3
drivers/video/fbmem.c
View File

@ -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,

2
drivers/video/gbefb.c
View File

@ -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];

2
drivers/video/omap2/omapfb/omapfb-main.c
View File

@ -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;

5
drivers/video/sbuslib.c
View File

@ -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 */

1
drivers/video/smscufx.c
View File

@ -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;
}

1
drivers/video/udlfb.c
View File

@ -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;
}

1
drivers/video/vermilion/vermilion.c
View File

@ -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;

1
drivers/video/vfb.c
View File

@ -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;
}

2
drivers/xen/gntalloc.c
View File

@ -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;

2
drivers/xen/gntdev.c
View File

@ -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;

3
drivers/xen/privcmd.c
View File

@ -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;

2
fs/binfmt_elf.c
View File

@ -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. */

2
fs/binfmt_elf_fdpic.c
View File

@ -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;
}

2
fs/hugetlbfs/inode.c
View File

@ -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))

2
fs/proc/task_mmu.c
View File

@ -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),

2
include/linux/mempolicy.h
View File

@ -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

3
include/linux/mm.h
View File

@ -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

1
include/linux/mm_types.h
View File

@ -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;

2
kernel/events/core.c
View File

@ -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;

3
mm/ksm.c
View File

@ -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

11
mm/memory.c
View File

@ -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;

2
mm/mlock.c
View File

@ -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))) {

2
mm/mmap.c
View File

@ -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 */

2
mm/nommu.c
View File

@ -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);

3
mm/vmalloc.c
View File

@ -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;
}

2
security/selinux/selinuxfs.c
View File

@ -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;

6
sound/core/pcm_native.c
View File

@ -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)

2
sound/usb/usx2y/us122l.c
View File

@ -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:

2
sound/usb/usx2y/usX2Yhwdep.c
View File

@ -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;
}

2
sound/usb/usx2y/usx2yhwdeppcm.c
View File

@ -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;
}