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Subject[PATCH 0/5] Make vma_is_anonymous() reliable
Date
We rely on ->vm_ops == NULL to detect anonymous VMA but this check is not
always reliable:

- MPX sets ->vm_ops on anonymous VMA;

- many drivers don't set ->vm_ops. See for instance hpet_mmap().

This patchset makes vma_is_anonymous() more reliable and makes few
cleanups around the code.

Kirill A. Shutemov (5):
mm: mark most vm_operations_struct const
x86, mpx: do not set ->vm_ops on mpx VMAs
mm: make sure all file VMAs have ->vm_ops set
mm, madvise: use vma_is_anonymous() to check for anon VMA
mm, memcontrol: use vma_is_anonymous() to check for anon VMA

arch/x86/kernel/vsyscall_64.c | 2 +-
arch/x86/mm/mmap.c | 7 +++++++
arch/x86/mm/mpx.c | 20 +-------------------
drivers/android/binder.c | 2 +-
drivers/gpu/drm/vgem/vgem_drv.c | 2 +-
drivers/hsi/clients/cmt_speech.c | 2 +-
drivers/infiniband/hw/qib/qib_file_ops.c | 2 +-
drivers/infiniband/hw/qib/qib_mmap.c | 2 +-
drivers/media/platform/omap/omap_vout.c | 2 +-
drivers/misc/genwqe/card_dev.c | 2 +-
drivers/staging/android/ion/ion.c | 2 +-
drivers/staging/comedi/comedi_fops.c | 2 +-
drivers/video/fbdev/omap2/omapfb/omapfb-main.c | 2 +-
drivers/xen/gntalloc.c | 2 +-
drivers/xen/gntdev.c | 2 +-
drivers/xen/privcmd.c | 4 ++--
fs/ceph/addr.c | 2 +-
fs/cifs/file.c | 2 +-
mm/madvise.c | 2 +-
mm/memcontrol.c | 2 +-
mm/mmap.c | 8 ++++++++
security/selinux/selinuxfs.c | 2 +-
22 files changed, 36 insertions(+), 39 deletions(-)

--
2.1.4



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