| From: |
| "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> |
| To: |
| Andrew Morton <akpm@linux-foundation.org> |
| Subject: |
| [PATCHv2 0/6] Make vma_is_anonymous() reliable |
| Date: |
| Fri, 17 Jul 2015 14:53:07 +0300 |
| Message-ID: |
| <1437133993-91885-1-git-send-email-kirill.shutemov@linux.intel.com> |
| Cc: |
| Oleg Nesterov <oleg@redhat.com>, linux-mm@kvack.org, linux-kernel@vger.kernel.org, "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> |
| Archive‑link: | |
Article |
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.
v2:
- drop broken patch;
- more cleanup for mpx code (Oleg);
- vma_is_anonymous() in create_huge_pmd() and wp_huge_pmd();
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: use vma_is_anonymous() in create_huge_pmd() and wp_huge_pmd()
mm, madvise: use vma_is_anonymous() to check for anon VMA
Oleg Nesterov (1):
mm, mpx: add "vm_flags_t vm_flags" arg to do_mmap_pgoff()
arch/x86/kernel/vsyscall_64.c | 2 +-
arch/x86/mm/mmap.c | 7 +++
arch/x86/mm/mpx.c | 71 +++-----------------------
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 +-
include/linux/mm.h | 12 ++++-
mm/madvise.c | 2 +-
mm/memory.c | 4 +-
mm/mmap.c | 18 ++++---
mm/nommu.c | 15 +++---
security/selinux/selinuxfs.c | 2 +-
24 files changed, 66 insertions(+), 99 deletions(-)
--
2.1.4
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