Acmcl2.516
net.unix-wizards
utcsrgv!utzoo!decvax!duke!chico!harpo!floyd!cmcl2!salkind
Thu Feb 18 17:34:19 1982
Just curious - bio.c query
In both physio() and swap(), the test

       if (bp->b_flags&B_WANTED)
               wakeup((caddr_t)bp);

runs at spl6().  Why does it have to run at spl6()?  In brelse() and
iodone() the same test does not run at spl6().

                                       Thanks in advance,
                                       Lou Salkind

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