From: Eric Dumazet <eric.dumazet@gmail.com>
To: Konstantin Khlebnikov <khlebnikov@openvz.org>,
Alex Williamson <alex.williamson@redhat.com>
Cc: linux-mm@kvack.org, Andrew Morton <akpm@linux-foundation.org>,
linux-kernel@vger.kernel.org, Hugh Dickins <hughd@google.com>,
Linus Torvalds <torvalds@linux-foundation.org>,
Nick Piggin <npiggin@kernel.dk>
Subject: Re: [PATCH v3 10/10] mm: kill vma flag VM_RESERVED and mm->reserved_vm counter
Date: Tue, 09 Oct 2012 12:02:01 +0200 [thread overview]
Message-ID: <1349776921.21172.4091.camel@edumazet-glaptop> (raw)
In-Reply-To: <20120731104239.20515.702.stgit@zurg>
On Tue, 2012-07-31 at 14:42 +0400, Konstantin Khlebnikov wrote:
> 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.
>
> Signed-off-by: Konstantin Khlebnikov <khlebnikov@openvz.org>
> Cc: Nick Piggin <npiggin@kernel.dk>
> Cc: Hugh Dickins <hughd@google.com>
> ---
> Documentation/vm/unevictable-lru.txt | 4 ++--
> arch/alpha/kernel/pci-sysfs.c | 2 +-
> arch/ia64/kernel/perfmon.c | 2 +-
> arch/ia64/mm/init.c | 3 ++-
> arch/powerpc/kvm/book3s_hv.c | 2 +-
> arch/sparc/kernel/pci.c | 2 +-
> arch/unicore32/kernel/process.c | 2 +-
> arch/x86/xen/mmu.c | 3 +--
> drivers/char/mbcs.c | 2 +-
> drivers/char/mem.c | 2 +-
> drivers/char/mspec.c | 2 +-
> drivers/gpu/drm/drm_gem.c | 2 +-
> drivers/gpu/drm/drm_vm.c | 10 ++--------
> drivers/gpu/drm/exynos/exynos_drm_gem.c | 2 +-
> drivers/gpu/drm/gma500/framebuffer.c | 3 +--
> drivers/gpu/drm/ttm/ttm_bo_vm.c | 4 ++--
> drivers/gpu/drm/udl/udl_fb.c | 2 +-
> drivers/infiniband/hw/ehca/ehca_uverbs.c | 4 ++--
> drivers/infiniband/hw/ipath/ipath_file_ops.c | 2 +-
> drivers/infiniband/hw/qib/qib_file_ops.c | 2 +-
> drivers/media/video/meye.c | 2 +-
> drivers/media/video/omap/omap_vout.c | 2 +-
> drivers/media/video/sn9c102/sn9c102_core.c | 3 +--
> drivers/media/video/usbvision/usbvision-video.c | 3 +--
> drivers/media/video/videobuf-dma-sg.c | 2 +-
> drivers/media/video/videobuf-vmalloc.c | 2 +-
> drivers/media/video/videobuf2-memops.c | 2 +-
> drivers/media/video/vino.c | 2 +-
> drivers/misc/carma/carma-fpga.c | 2 --
> drivers/misc/sgi-gru/grufile.c | 5 ++---
> drivers/mtd/mtdchar.c | 2 +-
> drivers/scsi/sg.c | 2 +-
> drivers/staging/media/easycap/easycap_main.c | 2 +-
> drivers/staging/omapdrm/omap_gem_dmabuf.c | 2 +-
> drivers/staging/tidspbridge/rmgr/drv_interface.c | 2 +-
> drivers/uio/uio.c | 4 +---
> drivers/usb/mon/mon_bin.c | 2 +-
> drivers/video/68328fb.c | 2 +-
> drivers/video/aty/atyfb_base.c | 3 +--
> drivers/video/fb-puv3.c | 3 +--
> drivers/video/fb_defio.c | 2 +-
> drivers/video/fbmem.c | 3 +--
> drivers/video/gbefb.c | 2 +-
> drivers/video/omap2/omapfb/omapfb-main.c | 2 +-
> drivers/video/sbuslib.c | 5 ++---
> drivers/video/smscufx.c | 1 -
> drivers/video/udlfb.c | 1 -
> drivers/video/vermilion/vermilion.c | 1 -
> drivers/video/vfb.c | 1 -
> drivers/xen/gntalloc.c | 2 +-
> drivers/xen/gntdev.c | 2 +-
> drivers/xen/privcmd.c | 3 ++-
> fs/binfmt_elf.c | 2 +-
> fs/binfmt_elf_fdpic.c | 2 +-
> fs/hugetlbfs/inode.c | 2 +-
> fs/proc/task_mmu.c | 2 +-
> include/linux/mempolicy.h | 2 +-
> include/linux/mm.h | 3 +--
> include/linux/mm_types.h | 1 -
> kernel/events/core.c | 2 +-
> mm/ksm.c | 3 +--
> mm/memory.c | 11 +++++------
> mm/mlock.c | 2 +-
> mm/mmap.c | 2 --
> mm/nommu.c | 2 +-
> mm/vmalloc.c | 3 +--
> security/selinux/selinuxfs.c | 2 +-
> sound/core/pcm_native.c | 6 +++---
> sound/usb/usx2y/us122l.c | 2 +-
> sound/usb/usx2y/usX2Yhwdep.c | 2 +-
> sound/usb/usx2y/usx2yhwdeppcm.c | 2 +-
> 71 files changed, 78 insertions(+), 106 deletions(-)
It seems drivers/vfio/pci/vfio_pci.c uses VM_RESERVED
CC [M] drivers/watchdog/advantechwdt.o
drivers/vfio/pci/vfio_pci.c: In function a??vfio_pci_mmapa??:
drivers/vfio/pci/vfio_pci.c:464:28: erreur: a??VM_RESERVEDa?? undeclared (first use in this function)
drivers/vfio/pci/vfio_pci.c:464:28: note: each undeclared identifier is reported only once for each function it appears in
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next prev parent reply other threads:[~2012-10-09 10:02 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-31 10:41 [PATCH RESEND v3 00/10] mm: vma->vm_flags diet Konstantin Khlebnikov
2012-07-31 10:41 ` [PATCH v3 01/10] x86, pat: remove the dependency on 'vm_pgoff' in track/untrack pfn vma routines Konstantin Khlebnikov
2012-07-31 10:42 ` [PATCH v3 02/10] x86, pat: separate the pfn attribute tracking for remap_pfn_range and vm_insert_pfn Konstantin Khlebnikov
2012-07-31 10:42 ` [PATCH v3 03/10] mm, x86, pat: rework linear pfn-mmap tracking Konstantin Khlebnikov
2012-07-31 10:42 ` [PATCH v3 04/10] mm: introduce arch-specific vma flag VM_ARCH_1 Konstantin Khlebnikov
2012-07-31 10:42 ` [PATCH v3 05/10] mm: kill vma flag VM_INSERTPAGE Konstantin Khlebnikov
2012-07-31 10:42 ` [PATCH v3 06/10] mm: kill vma flag VM_CAN_NONLINEAR Konstantin Khlebnikov
2012-10-09 23:01 ` Sasha Levin
2012-07-31 10:42 ` [PATCH v3 07/10] mm: use mm->exe_file instead of first VM_EXECUTABLE vma->vm_file Konstantin Khlebnikov
2012-08-01 1:34 ` James Morris
2012-07-31 10:42 ` [PATCH v3 08/10] mm: kill vma flag VM_EXECUTABLE and mm->num_exe_file_vmas Konstantin Khlebnikov
2012-07-31 10:42 ` [PATCH v3 09/10] mm: prepare VM_DONTDUMP for using in drivers Konstantin Khlebnikov
2012-07-31 10:42 ` [PATCH v3 10/10] mm: kill vma flag VM_RESERVED and mm->reserved_vm counter Konstantin Khlebnikov
2012-10-09 10:02 ` Eric Dumazet [this message]
2012-10-09 12:12 ` Linus Torvalds
2012-10-09 14:21 ` Alex Williamson
2012-10-09 23:00 ` Alex Williamson
2012-10-10 4:06 ` Alex Williamson
2012-07-31 16:31 ` [PATCH RESEND v3 00/10] mm: vma->vm_flags diet Linus Torvalds
-- strict thread matches above, loose matches on Subject: below --
2012-07-31 10:34 [PATCH " Konstantin Khlebnikov
2012-07-31 10:35 ` [PATCH v3 10/10] mm: kill vma flag VM_RESERVED and mm->reserved_vm counter Konstantin Khlebnikov
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