From: ira.weiny@intel.com
To: Andrew Morton <akpm@linux-foundation.org>,
John Hubbard <jhubbard@nvidia.com>,
Michal Hocko <mhocko@suse.com>,
"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
Peter Zijlstra <peterz@infradead.org>,
Jason Gunthorpe <jgg@ziepe.ca>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Paul Mackerras <paulus@samba.org>,
"David S. Miller" <davem@davemloft.net>,
Martin Schwidefsky <schwidefsky@de.ibm.com>,
Heiko Carstens <heiko.carstens@de.ibm.com>,
Rich Felker <dalias@libc.org>,
Yoshinori Sato <ysato@users.sourceforge.jp>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
Ralf Baechle <ralf@linux-mips.org>,
James Hogan <jhogan@kernel.org>
Cc: Ira Weiny <ira.weiny@intel.com>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
linux-mips@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,
linux-s390@vger.kernel.org, linux-sh@vger.kernel.org,
sparclinux@vger.kernel.org, linux-rdma@vger.kernel.org,
netdev@vger.kernel.org
Subject: [RESEND PATCH 0/7] Add FOLL_LONGTERM to GUP fast and use it
Date: Sun, 17 Mar 2019 11:34:31 -0700 [thread overview]
Message-ID: <20190317183438.2057-1-ira.weiny@intel.com> (raw)
From: Ira Weiny <ira.weiny@intel.com>
Resending after rebasing to the latest mm tree.
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 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.[1]
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/2019/2/11/1789
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 | 3 +-
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/io_uring.c | 5 +-
fs/orangefs/orangefs-bufmap.c | 2 +-
include/linux/mm.h | 18 +-
kernel/futex.c | 2 +-
lib/iov_iter.c | 7 +-
mm/gup.c | 258 ++++++++++++--------
mm/gup_benchmark.c | 5 +-
mm/util.c | 8 +-
net/ceph/pagevec.c | 2 +-
net/rds/info.c | 2 +-
net/rds/rdma.c | 3 +-
net/xdp/xdp_umem.c | 4 +-
46 files changed, 262 insertions(+), 197 deletions(-)
--
2.20.1
next reply other threads:[~2019-03-18 2:36 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-17 18:34 ira.weiny [this message]
2019-03-17 18:34 ` [RESEND 1/7] mm/gup: Replace get_user_pages_longterm() with FOLL_LONGTERM ira.weiny
2019-03-22 21:24 ` Dan Williams
2019-03-25 6:19 ` Ira Weiny
2019-03-25 16:45 ` Dan Williams
2019-03-25 8:46 ` Ira Weiny
2019-03-25 10:27 ` Ira Weiny
2019-03-17 18:34 ` [RESEND 2/7] mm/gup: Change write parameter to flags in fast walk ira.weiny
2019-03-22 21:30 ` Dan Williams
2019-03-17 18:34 ` [RESEND 3/7] mm/gup: Change GUP fast to use flags rather than a write 'bool' ira.weiny
2019-03-22 22:05 ` Dan Williams
2019-03-25 8:26 ` Ira Weiny
2019-03-17 18:34 ` [RESEND 4/7] mm/gup: Add FOLL_LONGTERM capability to GUP fast ira.weiny
2019-03-22 22:12 ` Dan Williams
2019-03-25 8:42 ` Ira Weiny
2019-03-25 16:47 ` Jason Gunthorpe
2019-03-25 9:23 ` Ira Weiny
2019-03-25 17:51 ` Jason Gunthorpe
2019-03-25 14:21 ` Ira Weiny
2019-03-25 22:36 ` Dan Williams
2019-03-25 14:54 ` Ira Weiny
2019-03-17 18:34 ` [RESEND 5/7] IB/hfi1: Use the new FOLL_LONGTERM flag to get_user_pages_fast() ira.weiny
2019-03-22 22:14 ` Dan Williams
2019-03-25 8:43 ` Ira Weiny
2019-03-17 18:34 ` [RESEND 6/7] IB/qib: " ira.weiny
2019-03-22 22:15 ` Dan Williams
2019-03-17 18:34 ` [RESEND 7/7] IB/mthca: " ira.weiny
2019-03-19 22:19 ` [RESEND PATCH 0/7] Add FOLL_LONGTERM to GUP fast and use it Andrew Morton
2019-03-21 8:40 ` Ira Weiny
-- strict thread matches above, loose matches on Subject: below --
2019-02-20 5:30 ira.weiny
2019-02-20 15:19 ` Christoph Hellwig
2019-02-20 18:02 ` Ira Weiny
2019-02-27 19:14 ` Ira Weiny
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