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    SubjectRe: [PATCH v5 01/10] mmap locking API: initial implementation as rwsem wrappers
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    On 4/22/20 2:14 AM, Michel Lespinasse wrote:
    > This change wraps the existing mmap_sem related rwsem calls into a new
    > mmap locking API. There are two justifications for the new API:
    >
    > - At first, it provides an easy hooking point to instrument mmap_sem
    > locking latencies independently of any other rwsems.
    >
    > - In the future, it may be a starting point for replacing the rwsem
    > implementation with a different one, such as range locks.
    >
    > Signed-off-by: Michel Lespinasse <walken@google.com>
    > Reviewed-by: Daniel Jordan <daniel.m.jordan@oracle.com>
    > Reviewed-by: Davidlohr Bueso <dbueso@suse.de>

    Reviewed-by: Vlastimil Babka <vbabka@suse.cz>

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