From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rob Landley Subject: Re: [Lhms-devel] [PATCH 0/7] Fragmentation Avoidance V19 Date: Fri, 4 Nov 2005 20:48:57 -0600 References: <20051104210418.BC56F184739@thermo.lanl.gov> In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200511042048.59310.rob@landley.net> Sender: owner-linux-mm@kvack.org Return-Path: To: Linus Torvalds Cc: Andy Nelson , mingo@elte.hu, akpm@osdl.org, arjan@infradead.org, arjanv@infradead.org, haveblue@us.ibm.com, kravetz@us.ibm.com, lhms-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org, linux-mm@kvack.org, mbligh@mbligh.org, mel@csn.ul.ie, nickpiggin@yahoo.com.au List-ID: On Friday 04 November 2005 15:22, Linus Torvalds wrote: > Now, if you want _most_ of memory to be available for hugepages, you > really will always require a special boot option, and a friendly machine > maintainer. Limiting things like inodes, process descriptors etc to a > smallish percentage of memory would not be acceptable in general. But it might make it a lot easier for User Mode Linux to give unused memory back to the host system via madvise(DONT_NEED). (Assuming there's some way to beat the page cache into submission and actually free up space. If there was an option to tell the page cache to stay the heck out of the hugepage zone, it would be just about perfect...) Rob -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org