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    SubjectRe: [PATCH] shrink_dcache_parent() races against shrink_dcache_memory()
    > No, the fast path (more frequent) is s_prunes == 0.
    > sb->s_prunes--;
    > if (likely(!sb->s_prunes))
    > wake_up(&sb->s_wait_prunes);
    > This is only optimizing a rare case ... and unmounting isn't very time
    > critical.
    Yeah, you are right. I was thinking about 2 things at the same time and
    was wrong :)


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