> Date: Fri, 24 Dec 2010 16:54:23 -0500 (EST) > From: Ted Unangst <ted.unan...@gmail.com> > > increase the hard limit on i386 max data size to 2GB-1. This will allow > memory hungry processes to potentially use more RAM if you increase data > limits appropriately.
I really think that -1 is odd. Where would those potential overflows be? > Index: vmparam.h > =================================================================== > RCS file: /home/tedu/cvs/src/sys/arch/i386/include/vmparam.h,v > retrieving revision 1.45 > diff -u -r1.45 vmparam.h > --- vmparam.h 15 Dec 2010 05:30:19 -0000 1.45 > +++ vmparam.h 24 Dec 2010 21:52:07 -0000 > @@ -63,7 +63,7 @@ > #define DFLDSIZ (64*1024*1024) /* initial data size > limit */ > #endif > #ifndef MAXDSIZ > -#define MAXDSIZ (1024*1024*1024) /* max data size */ > +#define MAXDSIZ (2UL*1024*1024*1024-1) /* max data size. -1 to > avoid overflow */ > #endif > #ifndef BRKSIZ > #define BRKSIZ (1024*1024*1024) /* heap gap size */
