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We want to shorten the seqcount write hold time. So split the seqlock into a lock and a seqcount. Open code the seqwrite_lock in the places which matter and drop the sequence counter update where it's pointless. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> [jstultz: Merge fixups from CLOCK_TAI collisions] Signed-off-by: John Stultz <john.stultz@linaro.org>