Re: [PATCH 1/3] hugetlbfs: use i_mmap_rwsem for more pmd sharing synchronization

From: Sasha Levin <sashal@kernel.org>
To: Sasha Levin <sashal@kernel.org>,
	Mike Kravetz <mike.kravetz@oracle.com>,
	linux-mm@kvack.org, linux-kernel@vger.kernel.org
Cc: Michal Hocko <mhocko@kernel.org>, Hugh Dickins <hughd@google.com>,
	stable@vger.kernel.orgstable@vger.kernel.org
Subject: Re: [PATCH 1/3] hugetlbfs: use i_mmap_rwsem for more pmd sharing synchronization
Date: Tue, 04 Dec 2018 13:54:54 +0000	[thread overview]
Message-ID: <20181204135454.C6C01206B7@mail.kernel.org> (raw)
In-Reply-To: <20181203200850.6460-2-mike.kravetz@oracle.com>

Hi,

[This is an automated email]

This commit has been processed because it contains a "Fixes:" tag,
fixing commit: 39dde65c9940 [PATCH] shared page table for hugetlb page.

The bot has tested the following trees: v4.19.6, v4.14.85, v4.9.142, v4.4.166, v3.18.128.

v4.19.6: Build OK!
v4.14.85: Failed to apply! Possible dependencies:
    285b8dcaacfc ("mm, hugetlbfs: pass fault address to no page handler")

v4.9.142: Failed to apply! Possible dependencies:
    1a1aad8a9b7b ("userfaultfd: hugetlbfs: add userfaultfd hugetlb hook")
    369cd2121be4 ("userfaultfd: hugetlbfs: userfaultfd_huge_must_wait for hugepmd ranges")
    7868a2087ec1 ("mm/hugetlb: add size parameter to huge_pte_offset()")
    82b0f8c39a38 ("mm: join struct fault_env and vm_fault")
    8fb5debc5fcd ("userfaultfd: hugetlbfs: add hugetlb_mcopy_atomic_pte for userfaultfd support")
    953c66c2b22a ("mm: THP page cache support for ppc64")
    ace71a19cec5 ("mm: introduce page_vma_mapped_walk()")
    fd60775aea80 ("mm, thp: avoid unlikely branches for split_huge_pmd")

v4.4.166: Failed to apply! Possible dependencies:
    01c8f1c44b83 ("mm, dax, gpu: convert vm_insert_mixed to pfn_t")
    0e749e54244e ("dax: increase granularity of dax_clear_blocks() operations")
    34c0fd540e79 ("mm, dax, pmem: introduce pfn_t")
    369cd2121be4 ("userfaultfd: hugetlbfs: userfaultfd_huge_must_wait for hugepmd ranges")
    52db400fcd50 ("pmem, dax: clean up clear_pmem()")
    66b3923a1a0f ("arm64: hugetlb: add support for PTE contiguous bit")
    7868a2087ec1 ("mm/hugetlb: add size parameter to huge_pte_offset()")
    82b0f8c39a38 ("mm: join struct fault_env and vm_fault")
    9973c98ecfda ("dax: add support for fsync/sync")
    ac401cc78242 ("dax: New fault locking")
    b2e0d1625e19 ("dax: fix lifetime of in-kernel dax mappings with dax_map_atomic()")
    bae473a423f6 ("mm: introduce fault_env")
    bc2466e42573 ("dax: Use radix tree entry lock to protect cow faults")
    e4b274915863 ("DAX: move RADIX_DAX_ definitions to dax.c")
    f9fe48bece3a ("dax: support dirty DAX entries in radix tree")

v3.18.128: Failed to apply! Possible dependencies:
    1038628d80e9 ("userfaultfd: uAPI")
    15b726ef048b ("userfaultfd: optimize read() and poll() to be O(1)")
    25edd8bffd0f ("userfaultfd: linux/Documentation/vm/userfaultfd.txt")
    2f4b829c625e ("arm64: Add support for hardware updates of the access and dirty pte bits")
    369cd2121be4 ("userfaultfd: hugetlbfs: userfaultfd_huge_must_wait for hugepmd ranges")
    3f602d2724b1 ("userfaultfd: Rename uffd_api.bits into .features")
    66b3923a1a0f ("arm64: hugetlb: add support for PTE contiguous bit")
    6910fa16dbe1 ("arm64: enable PTE type bit in the mask for pte_modify")
    736d2169338a ("parisc: Add Huge Page and HUGETLBFS support")
    7868a2087ec1 ("mm/hugetlb: add size parameter to huge_pte_offset()")
    82b0f8c39a38 ("mm: join struct fault_env and vm_fault")
    83cde9e8ba95 ("mm: use new helper functions around the i_mmap_mutex")
    86039bd3b4e6 ("userfaultfd: add new syscall to provide memory externalization")
    874bfcaf79e3 ("mm/xip: share the i_mmap_rwsem")
    8d2afd96c203 ("userfaultfd: solve the race between UFFDIO_COPY|ZEROPAGE and read")
    93ef666a094f ("arm64: Macros to check/set/unset the contiguous bit")
    a9b85f9415fd ("userfaultfd: change the read API to return a uffd_msg")
    ac401cc78242 ("dax: New fault locking")
    ba85c702e4b2 ("userfaultfd: wake pending userfaults")
    bae473a423f6 ("mm: introduce fault_env")
    bc2466e42573 ("dax: Use radix tree entry lock to protect cow faults")
    d475c6346a38 ("dax,ext2: replace XIP read and write with DAX I/O")
    de1414a654e6 ("fs: export inode_to_bdi and use it in favor of mapping->backing_dev_info")
    dfa37dc3fc1f ("userfaultfd: allow signals to interrupt a userfault")
    e4b274915863 ("DAX: move RADIX_DAX_ definitions to dax.c")
    ecf35a237a85 ("arm64: PTE/PMD contiguous bit definition")
    f24ffde43237 ("parisc: expose number of page table levels on Kconfig level")

How should we proceed with this patch?

--
Thanks,
Sasha