From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx138.postini.com [74.125.245.138]) by kanga.kvack.org (Postfix) with SMTP id 73FA86B0071 for ; Wed, 7 Aug 2013 03:17:23 -0400 (EDT) Date: Wed, 7 Aug 2013 16:17:26 +0900 From: Joonsoo Kim Subject: Re: [PATCH 2/4] mm, rmap: allocate anon_vma_chain before starting to link anon_vma_chain Message-ID: <20130807071726.GB32449@lge.com> References: <1375778620-31593-1-git-send-email-iamjoonsoo.kim@lge.com> <1375778620-31593-2-git-send-email-iamjoonsoo.kim@lge.com> <20130807060803.GJ1845@cmpxchg.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20130807060803.GJ1845@cmpxchg.org> Sender: owner-linux-mm@kvack.org List-ID: To: Johannes Weiner Cc: Andrew Morton , linux-mm@kvack.org, linux-kernel@vger.kernel.org, Minchan Kim , Mel Gorman , Rik van Riel , Michel Lespinasse On Wed, Aug 07, 2013 at 02:08:03AM -0400, Johannes Weiner wrote: > > > > list_for_each_entry_reverse(pavc, &src->anon_vma_chain, same_vma) { > > struct anon_vma *anon_vma; > > > > - avc = anon_vma_chain_alloc(GFP_NOWAIT | __GFP_NOWARN); > > - if (unlikely(!avc)) { > > - unlock_anon_vma_root(root); > > - root = NULL; > > - avc = anon_vma_chain_alloc(GFP_KERNEL); > > - if (!avc) > > - goto enomem_failure; > > - } > > + avc = list_entry((&avc_list)->next, typeof(*avc), same_vma); > > list_first_entry() please Okay. I will send next version soon. > > > + list_del(&avc->same_vma); > > anon_vma = pavc->anon_vma; > > root = lock_anon_vma_root(root, anon_vma); > > anon_vma_chain_link(dst, avc, anon_vma); > > @@ -259,8 +262,11 @@ int anon_vma_clone(struct vm_area_struct *dst, struct vm_area_struct *src) > > unlock_anon_vma_root(root); > > return 0; > > > > - enomem_failure: > > - unlink_anon_vmas(dst); > > +enomem_failure: > > + list_for_each_entry_safe(avc, pavc, &avc_list, same_vma) { > > + list_del(&avc->same_vma); > > + anon_vma_chain_free(avc); > > + } > > return -ENOMEM; > > } > > Otherwise, looks good. Thank you! -- 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