Date: Fri, 30 Jul 1999 00:05:28 -0500 From: Alan Cox <alc@cs.rice.edu> To: Matthew Dillon <dillon@apollo.backplane.com> Cc: David Greenman <dg@root.com>, hackers@freebsd.org Subject: Re: patch for behavior changes and madvise MADV_DONTNEED Message-ID: <19990730000528.L10860@cs.rice.edu> In-Reply-To: <199907291856.LAA77471@apollo.backplane.com>; from Matthew Dillon on Thu, Jul 29, 1999 at 11:56:07AM -0700 References: <199907162234.PAA21850@apollo.backplane.com> <19990720014804.A21777@cs.rice.edu> <199907291856.LAA77471@apollo.backplane.com>
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Your new "behavior" flag isn't known by vm_map_simply_entry, so map simplification could drop the behavior setting on the floor. I would prefer that the behavior is folded into eflags. Overall, I agree with the direction. Behavior is correctly a map attribute rather than an object attribute. Alan P.S. The MADV_FREE's by malloc/free were disabled by default in -CURRENT and -STABLE prior to the release of 3.2. They were a performance pessimization, slowing down "make world" by ~2%. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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