From: ira.weiny@intel.com
To: linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org,
kvm-ppc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,
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Cc: "Ira Weiny" <ira.weiny@intel.com>,
"John Hubbard" <jhubbard@nvidia.com>,
"David Hildenbrand" <david@redhat.com>,
"Cornelia Huck" <cohuck@redhat.com>,
"Yoshinori Sato" <ysato@users.sourceforge.jp>,
"Rich Felker" <dalias@libc.org>,
"David S. Miller" <davem@davemloft.net>,
"Thomas Gleixner" <tglx@linutronix.de>,
"Ingo Molnar" <mingo@redhat.com>,
"Borislav Petkov" <bp@alien8.de>,
"Joerg Roedel" <joro@8bytes.org>, "Wu Hao" <hao.wu@intel.com>,
"Alan Tull" <atull@kernel.org>, "Moritz Fischer" <mdf@kernel.org>,
"David Airlie" <airlied@linux.ie>,
"Daniel Vetter" <daniel@ffwll.ch>,
"Jason Gunthorpe" <jgg@ziepe.ca>,
"Dennis Dalessandro" <dennis.dalessandro@intel.com>,
"Christian Benvenuti" <benve@cisco.com>,
"Mauro Carvalho Chehab" <mchehab@kernel.org>,
"Matt Porter" <mporter@kernel.crashing.org>,
"Alexandre Bounine" <alex.bou9@gmail.com>,
"Kai Mäkisara" <Kai.Makisara@kolumbus.fi>,
"James E.J. Bottomley" <jejb@linux.ibm.com>,
"Martin K. Petersen" <martin.petersen@oracle.com>,
"Rob Springer" <rspringer@google.com>,
"Todd Poynor" <toddpoynor@google.com>,
"Ben Chan" <benchan@chromium.org>,
"Jens Wiklander" <jens.wiklander@linaro.org>,
"Alex Williamson" <alex.williamson@redhat.com>,
"Michael S. Tsirkin" <mst@redhat.com>,
"Jason Wang" <jasowang@redhat.com>,
"Bartlomiej Zolnierkiewicz" <b.zolnierkie@samsung.com>,
"Stefano Stabellini" <sstabellini@kernel.org>,
"Martin Brandenburg" <martin@omnibond.com>,
"Peter Zijlstra" <peterz@infradead.org>,
"Alexander Viro" <viro@zeniv.linux.org.uk>,
"Andrew Morton" <akpm@linux-foundation.org>,
"Michal Hocko" <mhocko@suse.com>,
"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Subject: [PATCH V2 0/7] Add FOLL_LONGTERM to GUP fast and use it
Date: Wed, 13 Feb 2019 15:04:48 -0800 [thread overview]
Message-ID: <20190213230455.5605-1-ira.weiny@intel.com> (raw)
In-Reply-To: <20190211201643.7599-1-ira.weiny@intel.com>
From: Ira Weiny <ira.weiny@intel.com>
NOTE: This series depends on my clean up patch to remove the write parameter
from gup_fast_permitted()[1]
HFI1, qib, and mthca, use get_user_pages_fast() due to it performance
advantages. These pages can be held for a significant time. But
get_user_pages_fast() does not protect against mapping of FS DAX pages.
Introduce FOLL_LONGTERM and use this flag in get_user_pages_fast() which
retains the performance while also adding the FS DAX checks. XDP has also
shown interest in using this functionality.[2]
In addition we change get_user_pages() to use the new FOLL_LONGTERM flag and
remove the specialized get_user_pages_longterm call.
[1] https://lkml.org/lkml/2019/2/11/237
[2] https://lkml.org/lkml/2019/2/11/1789
Ira Weiny (7):
mm/gup: Replace get_user_pages_longterm() with FOLL_LONGTERM
mm/gup: Change write parameter to flags in fast walk
mm/gup: Change GUP fast to use flags rather than a write 'bool'
mm/gup: Add FOLL_LONGTERM capability to GUP fast
IB/hfi1: Use the new FOLL_LONGTERM flag to get_user_pages_fast()
IB/qib: Use the new FOLL_LONGTERM flag to get_user_pages_fast()
IB/mthca: Use the new FOLL_LONGTERM flag to get_user_pages_fast()
arch/mips/mm/gup.c | 11 +-
arch/powerpc/kvm/book3s_64_mmu_hv.c | 4 +-
arch/powerpc/kvm/e500_mmu.c | 2 +-
arch/powerpc/mm/mmu_context_iommu.c | 4 +-
arch/s390/kvm/interrupt.c | 2 +-
arch/s390/mm/gup.c | 12 +-
arch/sh/mm/gup.c | 11 +-
arch/sparc/mm/gup.c | 9 +-
arch/x86/kvm/paging_tmpl.h | 2 +-
arch/x86/kvm/svm.c | 2 +-
drivers/fpga/dfl-afu-dma-region.c | 2 +-
drivers/gpu/drm/via/via_dmablit.c | 3 +-
drivers/infiniband/core/umem.c | 5 +-
drivers/infiniband/hw/hfi1/user_pages.c | 5 +-
drivers/infiniband/hw/mthca/mthca_memfree.c | 3 +-
drivers/infiniband/hw/qib/qib_user_pages.c | 8 +-
drivers/infiniband/hw/qib/qib_user_sdma.c | 2 +-
drivers/infiniband/hw/usnic/usnic_uiom.c | 9 +-
drivers/media/v4l2-core/videobuf-dma-sg.c | 6 +-
drivers/misc/genwqe/card_utils.c | 2 +-
drivers/misc/vmw_vmci/vmci_host.c | 2 +-
drivers/misc/vmw_vmci/vmci_queue_pair.c | 6 +-
drivers/platform/goldfish/goldfish_pipe.c | 3 +-
drivers/rapidio/devices/rio_mport_cdev.c | 4 +-
drivers/sbus/char/oradax.c | 2 +-
drivers/scsi/st.c | 3 +-
drivers/staging/gasket/gasket_page_table.c | 4 +-
drivers/tee/tee_shm.c | 2 +-
drivers/vfio/vfio_iommu_spapr_tce.c | 3 +-
drivers/vfio/vfio_iommu_type1.c | 3 +-
drivers/vhost/vhost.c | 2 +-
drivers/video/fbdev/pvr2fb.c | 2 +-
drivers/virt/fsl_hypervisor.c | 2 +-
drivers/xen/gntdev.c | 2 +-
fs/orangefs/orangefs-bufmap.c | 2 +-
include/linux/mm.h | 17 +-
kernel/futex.c | 2 +-
lib/iov_iter.c | 7 +-
mm/gup.c | 220 ++++++++++++--------
mm/gup_benchmark.c | 5 +-
mm/util.c | 8 +-
net/ceph/pagevec.c | 2 +-
net/rds/info.c | 2 +-
net/rds/rdma.c | 3 +-
44 files changed, 232 insertions(+), 180 deletions(-)
--
2.20.1
next prev parent reply other threads:[~2019-02-13 23:05 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-11 20:16 [PATCH 0/3] Add gup fast + longterm and use it in HFI1 ira.weiny
2019-02-11 20:16 ` [PATCH 1/3] mm/gup: Change "write" parameter to flags ira.weiny
2019-02-11 20:16 ` [PATCH 2/3] mm/gup: Introduce get_user_pages_fast_longterm() ira.weiny
2019-02-11 20:39 ` Jason Gunthorpe
2019-02-11 21:13 ` John Hubbard
2019-02-11 21:26 ` Ira Weiny
2019-02-11 21:39 ` John Hubbard
2019-02-11 21:45 ` Dan Williams
2019-02-11 21:52 ` Ira Weiny
2019-02-11 22:01 ` John Hubbard
2019-02-11 22:06 ` Jason Gunthorpe
2019-02-11 22:55 ` Dan Williams
2019-02-11 23:04 ` Weiny, Ira
2019-02-11 23:25 ` Jason Gunthorpe
2019-02-12 0:08 ` Ira Weiny
2019-02-11 20:16 ` [PATCH 3/3] IB/HFI1: Use new get_user_pages_fast_longterm() ira.weiny
2019-02-11 20:34 ` [PATCH 0/3] Add gup fast + longterm and use it in HFI1 Davidlohr Bueso
2019-02-11 20:47 ` Jason Gunthorpe
2019-02-11 21:42 ` Ira Weiny
2019-02-11 22:22 ` Jason Gunthorpe
2019-02-11 22:40 ` Weiny, Ira
2019-02-11 22:50 ` Jason Gunthorpe
2019-02-11 21:29 ` Ira Weiny
2019-02-11 20:40 ` Jason Gunthorpe
2019-02-11 21:14 ` Weiny, Ira
2019-02-11 22:23 ` Jason Gunthorpe
2019-02-13 23:04 ` ira.weiny [this message]
2019-02-13 23:04 ` [PATCH V2 1/7] mm/gup: Replace get_user_pages_longterm() with FOLL_LONGTERM ira.weiny
2019-02-13 23:04 ` [PATCH V2 2/7] mm/gup: Change write parameter to flags in fast walk ira.weiny
2019-02-13 23:04 ` [PATCH V2 3/7] mm/gup: Change GUP fast to use flags rather than a write 'bool' ira.weiny
2019-02-13 23:04 ` [PATCH V2 4/7] mm/gup: Add FOLL_LONGTERM capability to GUP fast ira.weiny
2019-02-13 23:04 ` [PATCH V2 5/7] IB/hfi1: Use the new FOLL_LONGTERM flag to get_user_pages_fast() ira.weiny
2019-02-13 23:04 ` [PATCH V2 6/7] IB/qib: " ira.weiny
2019-02-13 23:04 ` [PATCH V2 7/7] IB/mthca: " ira.weiny
2019-02-15 18:29 [PATCH V2 0/7] Add FOLL_LONGTERM to GUP fast and use it Ira Weiny
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