From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Tue, 10 Jun 2008 12:00:48 -0700 (PDT) From: Christoph Lameter Subject: Re: [patch 7/7] powerpc: lockless get_user_pages_fast In-Reply-To: <20080605094826.128415000@nick.local0.net> Message-ID: References: <20080605094300.295184000@nick.local0.net> <20080605094826.128415000@nick.local0.net> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org Return-Path: To: npiggin@suse.de Cc: akpm@linux-foundation.org, torvalds@linux-foundation.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, benh@kernel.crashing.org, paulus@samba.org List-ID: On Thu, 5 Jun 2008, npiggin@suse.de wrote: > Index: linux-2.6/include/linux/mm.h > =================================================================== > --- linux-2.6.orig/include/linux/mm.h > +++ linux-2.6/include/linux/mm.h > @@ -244,7 +244,7 @@ static inline int put_page_testzero(stru > */ > static inline int get_page_unless_zero(struct page *page) > { > - VM_BUG_ON(PageTail(page)); > + VM_BUG_ON(PageCompound(page)); > return atomic_inc_not_zero(&page->_count); > } This is reversing the modification to make get_page_unless_zero() usable with compound page heads. Will break the slab defrag patchset. -- 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