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    SubjectRe: [PATCH] vfs: avoid taking locks if inode not in lists
    > Before even taking locks, we can perform an unlocked test to check if
    > inode can possibly be in the lists.
    >
    > On a 2x4x2 machine, a close(socket()) pair can be 200% faster with these
    > changes.

    Great result! Seems simple and obvious to me.

    -Andi



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