Date: Tue, 16 Sep 2014 17:41:01 GMT From: John Baldwin <jhb@FreeBSD.org> To: Perforce Change Reviews <perforce@FreeBSD.org> Subject: PERFORCE change 1200321 for review Message-ID: <201409161741.s8GHf1dO059568@skunkworks.freebsd.org>
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http://p4web.freebsd.org/@@1200321?ac=10 Change 1200321 by jhb@jhb_jhbbsd on 2014/09/16 17:40:10 More hacks re: MAP_RENAME and MAP_NORESERVE. Affected files ... .. //depot/projects/smpng/sys/sys/param.h#196 edit .. //depot/projects/smpng/sys/vm/vm_mmap.c#113 edit Differences ... ==== //depot/projects/smpng/sys/sys/param.h#196 (text+ko) ==== @@ -80,6 +80,7 @@ #define P_OSREL_SIGWAIT 700000 #define P_OSREL_SIGSEGV 700004 #define P_OSREL_MAP_ANON 800104 +#define P_OSREL_MAP_RENAME 1100033 #define P_OSREL_MAJOR(x) ((x) / 100000) #endif ==== //depot/projects/smpng/sys/vm/vm_mmap.c#113 (text+ko) ==== @@ -220,6 +220,12 @@ fp = NULL; /* + * Ignore old flags that used to be defined but did not do anything. + */ + if (curproc < P_OSREL_MAP_RENAME) + flags &= ~(MAP_RESERVED0020 | MAP_RESERVED0040); + + /* * Enforce the constraints. * Mapping of length 0 is only allowed for old binaries. * Anonymous mapping shall specify -1 as filedescriptor and
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