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    SubjectRe: [PATCH 00/28] mm: preemptibility -v3
    Peter Zijlstra <> writes:

    > This patch-set makes part of the mm a lot more preemptible. It converts
    > i_mmap_lock and anon_vma->lock to mutexes and makes mmu_gather fully
    > preemptible.

    How about performance measurements? mutexes still behave quite
    differently from spinlocks, especially under contention.


    -- -- Speaking for myself only.

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