cvs commit: src/sys/sys msgbuf.h

[Bruce Evans]

bde         2004/02/17 03:11:10 PST

  FreeBSD src repository

  Modified files:
    sys/sys              msgbuf.h 
  Log:
  Backed out previous commit since it just causes panics unless a special
  value for MSGBUF_SIZE is configured.  MSGBUF_SIZE =
  (32768 * bootverbose ? 2 : 1) is always 1 or 2, so there is not enough space
  in the buffer for metadata, and blindly using the nonexistent space tends
  to cause fatal pagefaults.  I think
  MSGBUF_SIZE = (32768 * (bootverbose ? 2 : 1)) would be always 32768 since
  bootverbose is only statically initialized to 0 early when MSGBUF_SIZE is
  used.  MSGBUF_SIZE = (32768 * ((boothowto & RB_VERBOSE) ? 2 : 1)) should
  work, but this belongs in <sys/msgbuf.h> even less than previous versions.
  MSGBUF_SIZE shouldn't be a macro.
  
  Revision  Changes    Path
  1.23      +1 -1      src/sys/sys/msgbuf.h