Date: Mon, 23 Nov 2009 23:23:05 +0000 (UTC) From: Marcel Moolenaar <marcel@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r199723 - head/sys/sys Message-ID: <200911232323.nANNN5gl084110@svn.freebsd.org>
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Author: marcel Date: Mon Nov 23 23:23:05 2009 New Revision: 199723 URL: http://svn.freebsd.org/changeset/base/199723 Log: Don't make MJUMPAGESIZE equal to PAGE_SIZE unconditionally. When PAGE_SIZE is 16K, MJUMPAGESIZE equals MJUM16BYTES and causes build breakages. For PAGE_SIZE < 2K, define MJUMPAGESIZE as MCLBYTES. For PAGE_SIZE > 8K, define MJUMPAGESIZE as 8K. Everywhere inbetween, define MJUMPAGESIZE as PAGE_SIZE. Thus MCLBYTES <= MJUMPAGESIZE <= 8KB. Modified: head/sys/sys/param.h Modified: head/sys/sys/param.h ============================================================================== --- head/sys/sys/param.h Mon Nov 23 22:28:15 2009 (r199722) +++ head/sys/sys/param.h Mon Nov 23 23:23:05 2009 (r199723) @@ -144,7 +144,14 @@ #define MCLBYTES (1 << MCLSHIFT) /* size of an mbuf cluster */ -#define MJUMPAGESIZE PAGE_SIZE /* jumbo cluster 4k */ +#if PAGE_SIZE < 2048 +#define MJUMPAGESIZE MCLBYTES +#elif PAGE_SIZE <= 8192 +#define MJUMPAGESIZE PAGE_SIZE +#else +#define MJUMPAGESIZE (8 * 1024) +#endif + #define MJUM9BYTES (9 * 1024) /* jumbo cluster 9k */ #define MJUM16BYTES (16 * 1024) /* jumbo cluster 16k */
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