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kern_physio.c, bufcache_lock and spl

in physio(), there is a comment:
/* [raise the processor priority level to splbio;] */
followed by

but bufcache_lock is at IPL_NONE these days. Is the comment wrong, or
should we some something more than mutex_enter() here ?

Manuel Bouyer, LIP6, Universite Paris VI.  
     NetBSD: 26 ans d'experience feront toujours la difference

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