From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ob0-f197.google.com (mail-ob0-f197.google.com [209.85.214.197]) by kanga.kvack.org (Postfix) with ESMTP id 000666B007E for ; Tue, 19 Apr 2016 03:45:21 -0400 (EDT) Received: by mail-ob0-f197.google.com with SMTP id jl1so17057584obb.2 for ; Tue, 19 Apr 2016 00:45:21 -0700 (PDT) Received: from lgeamrelo12.lge.com (LGEAMRELO12.lge.com. [156.147.23.52]) by mx.google.com with ESMTP id 85si25862311iot.1.2016.04.19.00.45.20 for ; Tue, 19 Apr 2016 00:45:21 -0700 (PDT) Date: Tue, 19 Apr 2016 16:46:15 +0900 From: Minchan Kim Subject: Re: [PATCH v3 10/16] zsmalloc: factor page chain functionality out Message-ID: <20160419074615.GC18448@bbox> References: <1459321935-3655-1-git-send-email-minchan@kernel.org> <1459321935-3655-11-git-send-email-minchan@kernel.org> <20160418003305.GA5882@swordfish> MIME-Version: 1.0 In-Reply-To: <20160418003305.GA5882@swordfish> Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline Sender: owner-linux-mm@kvack.org List-ID: To: Sergey Senozhatsky Cc: Andrew Morton , linux-kernel@vger.kernel.org, linux-mm@kvack.org, jlayton@poochiereds.net, bfields@fieldses.org, Vlastimil Babka , Joonsoo Kim , koct9i@gmail.com, aquini@redhat.com, virtualization@lists.linux-foundation.org, Mel Gorman , Hugh Dickins , Sergey Senozhatsky , Rik van Riel , rknize@motorola.com, Gioh Kim , Sangseok Lee , Chan Gyun Jeong , Al Viro , YiPing Xu On Mon, Apr 18, 2016 at 09:33:05AM +0900, Sergey Senozhatsky wrote: > Hello, > > On (03/30/16 16:12), Minchan Kim wrote: > > @@ -1421,7 +1434,6 @@ static unsigned long obj_malloc(struct size_class *class, > > unsigned long m_offset; > > void *vaddr; > > > > - handle |= OBJ_ALLOCATED_TAG; > > a nitpick, why did you replace this ALLOCATED_TAG assignment > with 2 'handle | OBJ_ALLOCATED_TAG'? I thought this handle variable in here is pure handle but OBJ_ALLOCATED_TAG should live in head(i.e., link->handle), not pure handle, itself. > > -ss > > > obj = get_freeobj(first_page); > > objidx_to_page_and_offset(class, first_page, obj, > > &m_page, &m_offset); > > @@ -1431,10 +1443,10 @@ static unsigned long obj_malloc(struct size_class *class, > > set_freeobj(first_page, link->next >> OBJ_ALLOCATED_TAG); > > if (!class->huge) > > /* record handle in the header of allocated chunk */ > > - link->handle = handle; > > + link->handle = handle | OBJ_ALLOCATED_TAG; > > else > > /* record handle in first_page->private */ > > - set_page_private(first_page, handle); > > + set_page_private(first_page, handle | OBJ_ALLOCATED_TAG); > > kunmap_atomic(vaddr); > > mod_zspage_inuse(first_page, 1); > > zs_stat_inc(class, OBJ_USED, 1); -- 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