Add temporary workaround for PR kern/36019 (panic on sun2 and sun3).
Ok'ed by yamt.
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@ -1,4 +1,4 @@
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/* $NetBSD: uvm_readahead.c,v 1.3 2007/03/12 18:18:39 ad Exp $ */
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/* $NetBSD: uvm_readahead.c,v 1.4 2007/05/11 12:11:09 tsutsui Exp $ */
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/*-
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/*-
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* Copyright (c)2003, 2005 YAMAMOTO Takashi,
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* Copyright (c)2003, 2005 YAMAMOTO Takashi,
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@ -40,7 +40,7 @@
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*/
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*/
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#include <sys/cdefs.h>
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: uvm_readahead.c,v 1.3 2007/03/12 18:18:39 ad Exp $");
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__KERNEL_RCSID(0, "$NetBSD: uvm_readahead.c,v 1.4 2007/05/11 12:11:09 tsutsui Exp $");
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#include <sys/param.h>
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#include <sys/param.h>
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#include <sys/pool.h>
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#include <sys/pool.h>
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@ -66,6 +66,12 @@ struct uvm_ractx {
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off_t ra_next; /* next offset to read-ahead */
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off_t ra_next; /* next offset to read-ahead */
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};
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};
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#if defined(sun2) || (defined(sun3) && defined(_SUN3_))
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/* XXX: on sun2 and sun3 (but not sun3x) MAXPHYS is 0xe000 */
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#undef MAXPHYS
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#define MAXPHYS 0x8000 /* XXX */
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#endif
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#define RA_WINSIZE_INIT MAXPHYS /* initial window size */
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#define RA_WINSIZE_INIT MAXPHYS /* initial window size */
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#define RA_WINSIZE_MAX (MAXPHYS * 8) /* max window size */
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#define RA_WINSIZE_MAX (MAXPHYS * 8) /* max window size */
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#define RA_WINSIZE_SEQENTIAL RA_WINSIZE_MAX /* fixed window size used for
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#define RA_WINSIZE_SEQENTIAL RA_WINSIZE_MAX /* fixed window size used for
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