From mboxrd@z Thu Jan 1 00:00:00 1970 From: akpm@linux-foundation.org (Andrew Morton) Date: Fri, 5 Dec 2014 14:31:34 -0800 Subject: [RFC] mm:add KPF_ZERO_PAGE flag for /proc/kpageflags In-Reply-To: <35FD53F367049845BC99AC72306C23D103E688B313F2@CNBJMBX05.corpusers.net> References: <35FD53F367049845BC99AC72306C23D103E688B313EE@CNBJMBX05.corpusers.net> <35FD53F367049845BC99AC72306C23D103E688B313F2@CNBJMBX05.corpusers.net> Message-ID: <20141205143134.37139da2208c654a0d3cd942@linux-foundation.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Fri, 5 Dec 2014 18:22:33 +0800 "Wang, Yalin" wrote: > > -----Original Message----- > > From: Konstantin Khlebnikov [mailto:koct9i at gmail.com] > > Sent: Friday, December 05, 2014 5:21 PM > > To: Wang, Yalin > > Cc: linux-kernel at vger.kernel.org; linux-mm at kvack.org; linux-arm- > > kernel at lists.infradead.org; akpm at linux-foundation.org; n- > > horiguchi at ah.jp.nec.com > > Subject: Re: [RFC] mm:add KPF_ZERO_PAGE flag for /proc/kpageflags > > > > On Fri, Dec 5, 2014 at 11:57 AM, Wang, Yalin > > wrote: > > > This patch add KPF_ZERO_PAGE flag for zero_page, so that userspace > > > process can notice zero_page from /proc/kpageflags, and then do memory > > > analysis more accurately. > > > > It would be nice to mark also huge_zero_page. See (completely > > untested) patch in attachment. > > > Got it, > Thanks for your patch. Documentation/vm/pagemap.txt will need updating please.