From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Fri, 9 Jun 2006 19:42:36 -0700 From: Andrew Morton Subject: Re: [PATCH]: Adding a counter in vma to indicate the number of physical pages backing it Message-Id: <20060609194236.4b997b9a.akpm@osdl.org> In-Reply-To: <1149903235.31417.84.camel@galaxy.corp.google.com> References: <1149903235.31417.84.camel@galaxy.corp.google.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: rohitseth@google.com Cc: Linux-mm@kvack.org, Linux-kernel@vger.kernel.org List-ID: On Fri, 09 Jun 2006 18:33:55 -0700 Rohit Seth wrote: > Below is a patch that adds number of physical pages that each vma is > using in a process. Exporting this information to user space > using /proc//maps interface. Ouch, that's an awful lot of open-coded incs and decs. Isn't there some more centralised place we can do this? What locking protects vma.nphys (can we call this nr_present or something?) Will this patch do the right thing with weird vmas such as the gate vma and mmaps of device memory, etc? -- 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