From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Tue, 18 Jul 2006 07:45:21 -0700 (PDT) From: Christoph Lameter Subject: Re: [PATCH] mm: inactive-clean list In-Reply-To: <20060718072545.7cfed5b2.akpm@osdl.org> Message-ID: References: <1153167857.31891.78.camel@lappy> <1153224998.2041.15.camel@lappy> <44BCE86A.4030602@mbligh.org> <20060718072545.7cfed5b2.akpm@osdl.org> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org Return-Path: To: Andrew Morton Cc: mbligh@mbligh.org, a.p.zijlstra@chello.nl, linux-mm@kvack.org, torvalds@osdl.org, linux-kernel@vger.kernel.org List-ID: On Tue, 18 Jul 2006, Andrew Morton wrote: > Christoph Lameter wrote: > > What other types of non freeable pages could exist? > > PageWriteback() pages (potentially all of memory) Doesnt write throttling take care of that? > Pinned pages (various transient conditions, mainly get_user_pages()) Hmm.... > Some pages whose buffers are attached to an ext3 journal. These are just pinned by an increased refcount right? > Possibly NFS unstable pages. These are tracked by NR_NFS_UNSTABLE. Maybe we need a NR_UNSTABLE that includes pinned pages? -- 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