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Date: Wed, 13 Feb 2019 15:04:48 -0800
From: ira.weiny@...el.com
To: linux-mips@...r.kernel.org, linux-kernel@...r.kernel.org,
kvm-ppc@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
linux-s390@...r.kernel.org, linux-sh@...r.kernel.org,
sparclinux@...r.kernel.org, kvm@...r.kernel.org,
linux-fpga@...r.kernel.org, dri-devel@...ts.freedesktop.org,
linux-rdma@...r.kernel.org, linux-media@...r.kernel.org,
linux-scsi@...r.kernel.org, devel@...verdev.osuosl.org,
virtualization@...ts.linux-foundation.org, netdev@...r.kernel.org,
linux-fbdev@...r.kernel.org, xen-devel@...ts.xenproject.org,
devel@...ts.orangefs.org, linux-mm@...ck.org,
ceph-devel@...r.kernel.org, rds-devel@....oracle.com
Cc: Ira Weiny <ira.weiny@...el.com>,
John Hubbard <jhubbard@...dia.com>,
David Hildenbrand <david@...hat.com>,
Cornelia Huck <cohuck@...hat.com>,
Yoshinori Sato <ysato@...rs.sourceforge.jp>,
Rich Felker <dalias@...c.org>,
"David S. Miller" <davem@...emloft.net>,
Thomas Gleixner <tglx@...utronix.de>,
Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
Joerg Roedel <joro@...tes.org>, Wu Hao <hao.wu@...el.com>,
Alan Tull <atull@...nel.org>, Moritz Fischer <mdf@...nel.org>,
David Airlie <airlied@...ux.ie>,
Daniel Vetter <daniel@...ll.ch>,
Jason Gunthorpe <jgg@...pe.ca>,
Dennis Dalessandro <dennis.dalessandro@...el.com>,
Christian Benvenuti <benve@...co.com>,
Mauro Carvalho Chehab <mchehab@...nel.org>,
Matt Porter <mporter@...nel.crashing.org>,
Alexandre Bounine <alex.bou9@...il.com>,
Kai Mäkisara <Kai.Makisara@...umbus.fi>,
"James E.J. Bottomley" <jejb@...ux.ibm.com>,
"Martin K. Petersen" <martin.petersen@...cle.com>,
Rob Springer <rspringer@...gle.com>,
Todd Poynor <toddpoynor@...gle.com>,
Ben Chan <benchan@...omium.org>,
Jens Wiklander <jens.wiklander@...aro.org>,
Alex Williamson <alex.williamson@...hat.com>,
"Michael S. Tsirkin" <mst@...hat.com>,
Jason Wang <jasowang@...hat.com>,
Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
Stefano Stabellini <sstabellini@...nel.org>,
Martin Brandenburg <martin@...ibond.com>,
Peter Zijlstra <peterz@...radead.org>,
Alexander Viro <viro@...iv.linux.org.uk>,
Andrew Morton <akpm@...ux-foundation.org>,
Michal Hocko <mhocko@...e.com>,
"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
Subject: [PATCH V2 0/7] Add FOLL_LONGTERM to GUP fast and use it
From: Ira Weiny <ira.weiny@...el.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
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