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Message-ID: <20230125233554.153109-1-surenb@google.com>
Date: Wed, 25 Jan 2023 15:35:47 -0800
From: Suren Baghdasaryan <surenb@...gle.com>
To: akpm@...ux-foundation.org
Cc: michel@...pinasse.org, jglisse@...gle.com, mhocko@...e.com,
vbabka@...e.cz, hannes@...xchg.org, mgorman@...hsingularity.net,
dave@...olabs.net, willy@...radead.org, liam.howlett@...cle.com,
peterz@...radead.org, ldufour@...ux.ibm.com, paulmck@...nel.org,
mingo@...hat.com, will@...nel.org, luto@...nel.org,
songliubraving@...com, peterx@...hat.com, david@...hat.com,
dhowells@...hat.com, hughd@...gle.com, bigeasy@...utronix.de,
kent.overstreet@...ux.dev, punit.agrawal@...edance.com,
lstoakes@...il.com, peterjung1337@...il.com, rientjes@...gle.com,
axelrasmussen@...gle.com, joelaf@...gle.com, minchan@...gle.com,
jannh@...gle.com, shakeelb@...gle.com, tatashin@...gle.com,
edumazet@...gle.com, gthelen@...gle.com, gurua@...gle.com,
arjunroy@...gle.com, soheil@...gle.com, hughlynch@...gle.com,
leewalsh@...gle.com, posk@...gle.com, linux-mm@...ck.org,
linux-arm-kernel@...ts.infradead.org,
linuxppc-dev@...ts.ozlabs.org, x86@...nel.org,
linux-kernel@...r.kernel.org, kernel-team@...roid.com,
surenb@...gle.com
Subject: [PATCH v3 0/7] introduce vm_flags modifier functions
This patchset was originally published as a part of per-VMA locking [1] and
was split after suggestion that it's viable on its own and to facilitate
the review process. It is now a preprequisite for the next version of per-VMA
lock patchset, which reuses vm_flags modifier functions to lock the VMA when
vm_flags are being updated.
VMA vm_flags modifications are usually done under exclusive mmap_lock
protection because this attrubute affects other decisions like VMA merging
or splitting and races should be prevented. Introduce vm_flags modifier
functions to enforce correct locking.
The patchset applies cleanly over mm-unstable branch of mm tree.
My apologies for an extremely large distribution list. The patch touches
lots of files and many are in arch/ and drivers/.
Changes since v2 [2]
- Add an additional patch to convert vma assignment to a memcpy.
- Change vm_flags to a union of __private and const fields,
per Peter Zijlstra and Matthew Wilcox.
- Changed vm_flags type to vm_flags_t, per Matthew Wilcox.
- Removed unnecessary BUG_ON's from ksm_madvise and hugepage_madvise,
per Michal Hocko.
- Documented mod_vm_flags_nolock usage, per Michal Hocko.
[1] https://lore.kernel.org/all/20230109205336.3665937-1-surenb@google.com/
[2] https://lore.kernel.org/lkml/20230125083851.27759-1-surenb@google.com/
Suren Baghdasaryan (7):
kernel/fork: convert vma assignment to a memcpy
mm: introduce vma->vm_flags wrapper functions
mm: replace VM_LOCKED_CLEAR_MASK with VM_LOCKED_MASK
mm: replace vma->vm_flags direct modifications with modifier calls
mm: replace vma->vm_flags indirect modification in ksm_madvise
mm: introduce mod_vm_flags_nolock and use it in untrack_pfn
mm: export dump_mm()
arch/arm/kernel/process.c | 2 +-
arch/ia64/mm/init.c | 8 +--
arch/loongarch/include/asm/tlb.h | 2 +-
arch/powerpc/kvm/book3s_hv_uvmem.c | 5 +-
arch/powerpc/kvm/book3s_xive_native.c | 2 +-
arch/powerpc/mm/book3s64/subpage_prot.c | 2 +-
arch/powerpc/platforms/book3s/vas-api.c | 2 +-
arch/powerpc/platforms/cell/spufs/file.c | 14 ++---
arch/s390/mm/gmap.c | 8 ++-
arch/x86/entry/vsyscall/vsyscall_64.c | 2 +-
arch/x86/kernel/cpu/sgx/driver.c | 2 +-
arch/x86/kernel/cpu/sgx/virt.c | 2 +-
arch/x86/mm/pat/memtype.c | 14 +++--
arch/x86/um/mem_32.c | 2 +-
drivers/acpi/pfr_telemetry.c | 2 +-
drivers/android/binder.c | 3 +-
drivers/char/mspec.c | 2 +-
drivers/crypto/hisilicon/qm.c | 2 +-
drivers/dax/device.c | 2 +-
drivers/dma/idxd/cdev.c | 2 +-
drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c | 2 +-
drivers/gpu/drm/amd/amdkfd/kfd_chardev.c | 4 +-
drivers/gpu/drm/amd/amdkfd/kfd_doorbell.c | 4 +-
drivers/gpu/drm/amd/amdkfd/kfd_events.c | 4 +-
drivers/gpu/drm/amd/amdkfd/kfd_process.c | 4 +-
drivers/gpu/drm/drm_gem.c | 2 +-
drivers/gpu/drm/drm_gem_dma_helper.c | 3 +-
drivers/gpu/drm/drm_gem_shmem_helper.c | 2 +-
drivers/gpu/drm/drm_vm.c | 8 +--
drivers/gpu/drm/etnaviv/etnaviv_gem.c | 2 +-
drivers/gpu/drm/exynos/exynos_drm_gem.c | 4 +-
drivers/gpu/drm/gma500/framebuffer.c | 2 +-
drivers/gpu/drm/i810/i810_dma.c | 2 +-
drivers/gpu/drm/i915/gem/i915_gem_mman.c | 4 +-
drivers/gpu/drm/mediatek/mtk_drm_gem.c | 2 +-
drivers/gpu/drm/msm/msm_gem.c | 2 +-
drivers/gpu/drm/omapdrm/omap_gem.c | 3 +-
drivers/gpu/drm/rockchip/rockchip_drm_gem.c | 3 +-
drivers/gpu/drm/tegra/gem.c | 5 +-
drivers/gpu/drm/ttm/ttm_bo_vm.c | 3 +-
drivers/gpu/drm/virtio/virtgpu_vram.c | 2 +-
drivers/gpu/drm/vmwgfx/vmwgfx_ttm_glue.c | 2 +-
drivers/gpu/drm/xen/xen_drm_front_gem.c | 3 +-
drivers/hsi/clients/cmt_speech.c | 2 +-
drivers/hwtracing/intel_th/msu.c | 2 +-
drivers/hwtracing/stm/core.c | 2 +-
drivers/infiniband/hw/hfi1/file_ops.c | 4 +-
drivers/infiniband/hw/mlx5/main.c | 4 +-
drivers/infiniband/hw/qib/qib_file_ops.c | 13 ++---
drivers/infiniband/hw/usnic/usnic_ib_verbs.c | 2 +-
.../infiniband/hw/vmw_pvrdma/pvrdma_verbs.c | 2 +-
.../common/videobuf2/videobuf2-dma-contig.c | 2 +-
.../common/videobuf2/videobuf2-vmalloc.c | 2 +-
drivers/media/v4l2-core/videobuf-dma-contig.c | 2 +-
drivers/media/v4l2-core/videobuf-dma-sg.c | 4 +-
drivers/media/v4l2-core/videobuf-vmalloc.c | 2 +-
drivers/misc/cxl/context.c | 2 +-
drivers/misc/habanalabs/common/memory.c | 2 +-
drivers/misc/habanalabs/gaudi/gaudi.c | 4 +-
drivers/misc/habanalabs/gaudi2/gaudi2.c | 8 +--
drivers/misc/habanalabs/goya/goya.c | 4 +-
drivers/misc/ocxl/context.c | 4 +-
drivers/misc/ocxl/sysfs.c | 2 +-
drivers/misc/open-dice.c | 4 +-
drivers/misc/sgi-gru/grufile.c | 4 +-
drivers/misc/uacce/uacce.c | 2 +-
drivers/sbus/char/oradax.c | 2 +-
drivers/scsi/cxlflash/ocxl_hw.c | 2 +-
drivers/scsi/sg.c | 2 +-
.../staging/media/atomisp/pci/hmm/hmm_bo.c | 2 +-
drivers/staging/media/deprecated/meye/meye.c | 4 +-
.../media/deprecated/stkwebcam/stk-webcam.c | 2 +-
drivers/target/target_core_user.c | 2 +-
drivers/uio/uio.c | 2 +-
drivers/usb/core/devio.c | 3 +-
drivers/usb/mon/mon_bin.c | 3 +-
drivers/vdpa/vdpa_user/iova_domain.c | 2 +-
drivers/vfio/pci/vfio_pci_core.c | 2 +-
drivers/vhost/vdpa.c | 2 +-
drivers/video/fbdev/68328fb.c | 2 +-
drivers/video/fbdev/core/fb_defio.c | 4 +-
drivers/xen/gntalloc.c | 2 +-
drivers/xen/gntdev.c | 4 +-
drivers/xen/privcmd-buf.c | 2 +-
drivers/xen/privcmd.c | 4 +-
fs/aio.c | 2 +-
fs/cramfs/inode.c | 2 +-
fs/erofs/data.c | 2 +-
fs/exec.c | 4 +-
fs/ext4/file.c | 2 +-
fs/fuse/dax.c | 2 +-
fs/hugetlbfs/inode.c | 4 +-
fs/orangefs/file.c | 3 +-
fs/proc/task_mmu.c | 2 +-
fs/proc/vmcore.c | 3 +-
fs/userfaultfd.c | 2 +-
fs/xfs/xfs_file.c | 2 +-
include/linux/mm.h | 55 +++++++++++++++++--
include/linux/mm_types.h | 10 +++-
include/linux/pgtable.h | 5 +-
kernel/bpf/ringbuf.c | 4 +-
kernel/bpf/syscall.c | 4 +-
kernel/events/core.c | 2 +-
kernel/fork.c | 4 +-
kernel/kcov.c | 2 +-
kernel/relay.c | 2 +-
mm/debug.c | 1 +
mm/hugetlb.c | 4 +-
mm/madvise.c | 2 +-
mm/memory.c | 19 ++++---
mm/memremap.c | 4 +-
mm/mlock.c | 12 ++--
mm/mmap.c | 32 ++++++-----
mm/mprotect.c | 2 +-
mm/mremap.c | 8 +--
mm/nommu.c | 11 ++--
mm/secretmem.c | 2 +-
mm/shmem.c | 2 +-
mm/vmalloc.c | 2 +-
net/ipv4/tcp.c | 4 +-
security/selinux/selinuxfs.c | 6 +-
sound/core/oss/pcm_oss.c | 2 +-
sound/core/pcm_native.c | 9 +--
sound/soc/pxa/mmp-sspa.c | 2 +-
sound/usb/usx2y/us122l.c | 4 +-
sound/usb/usx2y/usX2Yhwdep.c | 2 +-
sound/usb/usx2y/usx2yhwdeppcm.c | 2 +-
127 files changed, 295 insertions(+), 234 deletions(-)
--
2.39.1
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