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Date: Wed, 29 Oct 2014 17:35:15 +0100 From: Andrea Arcangeli <aarcange@...hat.com> To: Andrew Morton <akpm@...ux-foundation.org>, linux-kernel@...r.kernel.org, linux-mm@...ck.org Cc: "Kirill A. Shutemov" <kirill@...temov.name>, Michel Lespinasse <walken@...gle.com>, Andrew Jones <drjones@...hat.com>, Hugh Dickins <hughd@...gle.com>, Mel Gorman <mgorman@...e.de>, Andres Lagar-Cavilla <andreslc@...gle.com>, Minchan Kim <minchan@...nel.org>, KOSAKI Motohiro <kosaki.motohiro@...il.com>, "\\\"Dr. David Alan Gilbert\\\"" <dgilbert@...hat.com>, Peter Feiner <pfeiner@...gle.com>, Peter Zijlstra <peterz@...radead.org>, Benjamin Herrenschmidt <benh@...nel.crashing.org>, James Bottomley <James.Bottomley@...senPartnership.com>, David Miller <davem@...emloft.net>, Steve Capper <steve.capper@...aro.org>, Johannes Weiner <jweiner@...hat.com> Subject: [PATCH 0/5] get_user_pages_locked|unlocked v1 This patchset standalone is an optimization leveraging the page fault FAULT_FLAG_ALLOW_RETRY flag which allows the page fault paths to drop the mmap_sem before I/O. For the userfaultfd patchset this patch is instead a dependency as we need that flag always set the first time any thread attempts a page fault, in order to release the mmap_sem before stopping the page fault (while waiting for a later userland wakeup). http://thread.gmane.org/gmane.linux.kernel.mm/123575 Andrea Arcangeli (5): mm: gup: add get_user_pages_locked and get_user_pages_unlocked mm: gup: add __get_user_pages_unlocked to customize gup_flags mm: gup: use get_user_pages_unlocked within get_user_pages_fast mm: gup: use get_user_pages_unlocked mm: gup: kvm use get_user_pages_unlocked arch/mips/mm/gup.c | 8 +- arch/powerpc/mm/gup.c | 6 +- arch/s390/mm/gup.c | 6 +- arch/sh/mm/gup.c | 6 +- arch/sparc/mm/gup.c | 6 +- arch/x86/mm/gup.c | 7 +- drivers/iommu/amd_iommu_v2.c | 6 +- drivers/media/pci/ivtv/ivtv-udma.c | 6 +- drivers/scsi/st.c | 7 +- drivers/video/fbdev/pvr2fb.c | 6 +- include/linux/kvm_host.h | 11 -- include/linux/mm.h | 11 ++ mm/gup.c | 203 ++++++++++++++++++++++++++++++++++--- mm/nommu.c | 33 ++++++ mm/process_vm_access.c | 7 +- mm/util.c | 10 +- net/ceph/pagevec.c | 6 +- virt/kvm/async_pf.c | 2 +- virt/kvm/kvm_main.c | 50 +-------- 19 files changed, 265 insertions(+), 132 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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