From: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> To: Andrea Arcangeli <aarcange@redhat.com>, Hugh Dickins <hughd@google.com>, Rik van Riel <riel@redhat.com>, Andrew Morton <akpm@linux-foundation.org> Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Subject: [PATCH 00/12] Fix few rmap-related THP bugs Date: Tue, 24 Jan 2017 19:28:12 +0300 [thread overview] Message-ID: <20170124162824.91275-1-kirill.shutemov@linux.intel.com> (raw) The patch fixes handing PTE-mapped THPs in page_referenced() and page_idle_clear_pte_refs(). To achieve that I've intrdocued new helper -- page_check_walk() -- which replaces all page_check_address{,_transhuge}() and covers all THP cases. Patchset overview: - First patch fixes one uprobe bug (unrelated to the rest of the patchset, just spotted it at the same time); - Patches 2-5 fix handling PTE-mapped THPs in page_referenced(), page_idle_clear_pte_refs() and rmap core; - Patches 6-12 convert all page_check_address{,_transhuge}() users (plus remove_migration_pte()) to page_check_walk() and drop unused helpers. I think the fixes are not critical enough for stable@ as they don't lead to crashes or hangs, only suboptimal behaviour. Please review and consider applying. Kirill A. Shutemov (12): uprobes: split THPs before trying replace them mm: introduce page_check_walk() mm: fix handling PTE-mapped THPs in page_referenced() mm: fix handling PTE-mapped THPs in page_idle_clear_pte_refs() mm, rmap: check all VMAs that PTE-mapped THP can be part of mm: convert page_mkclean_one() to page_check_walk() mm: convert try_to_unmap_one() to page_check_walk() mm, ksm: convert write_protect_page() to page_check_walk() mm, uprobes: convert __replace_page() to page_check_walk() mm: convert page_mapped_in_vma() to page_check_walk() mm: drop page_check_address{,_transhuge} mm: convert remove_migration_pte() to page_check_walk() include/linux/rmap.h | 85 ++++--- kernel/events/uprobes.c | 26 ++- mm/Makefile | 6 +- mm/huge_memory.c | 25 +-- mm/internal.h | 9 +- mm/ksm.c | 34 +-- mm/migrate.c | 103 ++++----- mm/page_check.c | 178 +++++++++++++++ mm/page_idle.c | 34 +-- mm/rmap.c | 572 +++++++++++++++++++----------------------------- 10 files changed, 567 insertions(+), 505 deletions(-) create mode 100644 mm/page_check.c -- 2.11.0
WARNING: multiple messages have this Message-ID (diff)
From: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> To: Andrea Arcangeli <aarcange@redhat.com>, Hugh Dickins <hughd@google.com>, Rik van Riel <riel@redhat.com>, Andrew Morton <akpm@linux-foundation.org> Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Subject: [PATCH 00/12] Fix few rmap-related THP bugs Date: Tue, 24 Jan 2017 19:28:12 +0300 [thread overview] Message-ID: <20170124162824.91275-1-kirill.shutemov@linux.intel.com> (raw) The patch fixes handing PTE-mapped THPs in page_referenced() and page_idle_clear_pte_refs(). To achieve that I've intrdocued new helper -- page_check_walk() -- which replaces all page_check_address{,_transhuge}() and covers all THP cases. Patchset overview: - First patch fixes one uprobe bug (unrelated to the rest of the patchset, just spotted it at the same time); - Patches 2-5 fix handling PTE-mapped THPs in page_referenced(), page_idle_clear_pte_refs() and rmap core; - Patches 6-12 convert all page_check_address{,_transhuge}() users (plus remove_migration_pte()) to page_check_walk() and drop unused helpers. I think the fixes are not critical enough for stable@ as they don't lead to crashes or hangs, only suboptimal behaviour. Please review and consider applying. Kirill A. Shutemov (12): uprobes: split THPs before trying replace them mm: introduce page_check_walk() mm: fix handling PTE-mapped THPs in page_referenced() mm: fix handling PTE-mapped THPs in page_idle_clear_pte_refs() mm, rmap: check all VMAs that PTE-mapped THP can be part of mm: convert page_mkclean_one() to page_check_walk() mm: convert try_to_unmap_one() to page_check_walk() mm, ksm: convert write_protect_page() to page_check_walk() mm, uprobes: convert __replace_page() to page_check_walk() mm: convert page_mapped_in_vma() to page_check_walk() mm: drop page_check_address{,_transhuge} mm: convert remove_migration_pte() to page_check_walk() include/linux/rmap.h | 85 ++++--- kernel/events/uprobes.c | 26 ++- mm/Makefile | 6 +- mm/huge_memory.c | 25 +-- mm/internal.h | 9 +- mm/ksm.c | 34 +-- mm/migrate.c | 103 ++++----- mm/page_check.c | 178 +++++++++++++++ mm/page_idle.c | 34 +-- mm/rmap.c | 572 +++++++++++++++++++----------------------------- 10 files changed, 567 insertions(+), 505 deletions(-) create mode 100644 mm/page_check.c -- 2.11.0 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
next reply other threads:[~2017-01-24 16:29 UTC|newest] Thread overview: 71+ messages / expand[flat|nested] mbox.gz Atom feed top 2017-01-24 16:28 Kirill A. Shutemov [this message] 2017-01-24 16:28 ` [PATCH 00/12] Fix few rmap-related THP bugs Kirill A. Shutemov 2017-01-24 16:28 ` [PATCH 01/12] uprobes: split THPs before trying replace them Kirill A. Shutemov 2017-01-24 16:28 ` Kirill A. Shutemov 2017-01-24 18:08 ` Rik van Riel 2017-01-24 18:08 ` Rik van Riel 2017-01-24 21:28 ` Andrew Morton 2017-01-24 21:28 ` Andrew Morton 2017-01-24 22:22 ` Kirill A. Shutemov 2017-01-24 22:22 ` Kirill A. Shutemov 2017-01-24 22:35 ` Andrew Morton 2017-01-24 22:35 ` Andrew Morton 2017-01-24 22:56 ` Kirill A. Shutemov 2017-01-24 22:56 ` Kirill A. Shutemov 2017-01-25 16:55 ` Srikar Dronamraju 2017-01-25 16:55 ` Srikar Dronamraju 2017-01-25 17:44 ` Rik van Riel 2017-01-25 17:44 ` Kirill A. Shutemov 2017-01-25 17:44 ` Kirill A. Shutemov 2017-01-25 18:35 ` Johannes Weiner 2017-01-25 18:35 ` Johannes Weiner 2017-01-25 18:38 ` Kirill A. Shutemov 2017-01-25 18:38 ` Kirill A. Shutemov 2017-01-26 2:54 ` Srikar Dronamraju 2017-01-26 2:54 ` Srikar Dronamraju 2017-01-25 18:22 ` Johannes Weiner 2017-01-25 18:22 ` Johannes Weiner 2017-01-24 16:28 ` [PATCH 02/12] mm: introduce page_check_walk() Kirill A. Shutemov 2017-01-24 16:28 ` Kirill A. Shutemov 2017-01-24 21:41 ` Andrew Morton 2017-01-24 21:41 ` Andrew Morton 2017-01-24 22:50 ` Kirill A. Shutemov 2017-01-24 22:50 ` Kirill A. Shutemov 2017-01-24 22:55 ` Andrew Morton 2017-01-24 22:55 ` Andrew Morton 2017-01-25 17:53 ` Kirill A. Shutemov 2017-01-25 17:53 ` Kirill A. Shutemov 2017-01-25 1:19 ` kbuild test robot 2017-01-25 1:19 ` kbuild test robot 2017-01-25 1:59 ` kbuild test robot 2017-01-25 1:59 ` kbuild test robot 2017-01-24 16:28 ` [PATCH 03/12] mm: fix handling PTE-mapped THPs in page_referenced() Kirill A. Shutemov 2017-01-24 16:28 ` Kirill A. Shutemov 2017-01-24 16:28 ` [PATCH 04/12] mm: fix handling PTE-mapped THPs in page_idle_clear_pte_refs() Kirill A. Shutemov 2017-01-24 16:28 ` Kirill A. Shutemov 2017-01-24 16:28 ` [PATCH 05/12] mm, rmap: check all VMAs that PTE-mapped THP can be part of Kirill A. Shutemov 2017-01-24 16:28 ` Kirill A. Shutemov 2017-01-24 16:28 ` [PATCH 06/12] mm: convert page_mkclean_one() to page_check_walk() Kirill A. Shutemov 2017-01-24 16:28 ` Kirill A. Shutemov 2017-01-25 1:44 ` kbuild test robot 2017-01-25 1:44 ` kbuild test robot 2017-01-25 2:00 ` kbuild test robot 2017-01-25 2:00 ` kbuild test robot 2017-01-24 16:28 ` [PATCH 07/12] mm: convert try_to_unmap_one() " Kirill A. Shutemov 2017-01-24 16:28 ` Kirill A. Shutemov 2017-01-25 3:13 ` kbuild test robot 2017-01-25 3:13 ` kbuild test robot 2017-01-24 16:28 ` [PATCH 08/12] mm, ksm: convert write_protect_page() " Kirill A. Shutemov 2017-01-24 16:28 ` Kirill A. Shutemov 2017-01-24 16:28 ` [PATCH 09/12] mm, uprobes: convert __replace_page() " Kirill A. Shutemov 2017-01-24 16:28 ` Kirill A. Shutemov 2017-01-26 2:58 ` Srikar Dronamraju 2017-01-26 2:58 ` Srikar Dronamraju 2017-01-24 16:28 ` [PATCH 10/12] mm: convert page_mapped_in_vma() " Kirill A. Shutemov 2017-01-24 16:28 ` Kirill A. Shutemov 2017-01-24 16:28 ` [PATCH 11/12] mm: drop page_check_address{,_transhuge} Kirill A. Shutemov 2017-01-24 16:28 ` Kirill A. Shutemov 2017-01-24 16:28 ` [PATCH 12/12] mm: convert remove_migration_pte() to page_check_walk() Kirill A. Shutemov 2017-01-24 16:28 ` Kirill A. Shutemov 2017-01-25 1:54 ` kbuild test robot 2017-01-25 1:54 ` kbuild test robot
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