From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail172.messagelabs.com (mail172.messagelabs.com [216.82.254.3]) by kanga.kvack.org (Postfix) with SMTP id 6AE566B0169 for ; Tue, 23 Aug 2011 10:59:21 -0400 (EDT) Date: Tue, 23 Aug 2011 09:59:18 -0500 (CDT) From: Christoph Lameter Subject: Re: [RFC] mm: Distinguish between mlocked and pinned pages In-Reply-To: <20110817155412.cc302033.akpm@linux-foundation.org> Message-ID: References: <20110817155412.cc302033.akpm@linux-foundation.org> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org List-ID: To: Andrew Morton Cc: linux-mm@kvack.org, linux-rdma@vger.kernel.org, Hugh Dickins On Wed, 17 Aug 2011, Andrew Morton wrote: > This is an obvious place. Could I ask that you split all these up into > one-definition-per-line and we can start in on properly documenting > each field? Subject: mm: Add comments to explain mm_struct fields Explain comments to explain the page statistics field in the mm_struct. Signed-off-by: Christoph Lameter --- include/linux/mm_types.h | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) Index: linux-2.6/include/linux/mm_types.h =================================================================== --- linux-2.6.orig/include/linux/mm_types.h 2011-08-23 09:43:32.000000000 -0500 +++ linux-2.6/include/linux/mm_types.h 2011-08-23 09:52:09.000000000 -0500 @@ -281,8 +281,15 @@ struct mm_struct { unsigned long hiwater_rss; /* High-watermark of RSS usage */ unsigned long hiwater_vm; /* High-water virtual memory usage */ - unsigned long total_vm, locked_vm, pinned_vm, shared_vm, exec_vm; - unsigned long stack_vm, reserved_vm, def_flags, nr_ptes; + unsigned long total_vm; /* Total pages mapped */ + unsigned long locked_vm /* Pages that have PG_mlocked set */ + unsigned long pinned_vm; /* Refcount permanently increased */ + unsigned long shared_vm; /* Shared pages (files) */ + unsigned long exec_vm; /* VM_EXEC & ~VM_WRITE */ + unsigned long stack_vm; /* VM_GROWSUP/DOWN */ + unsigned long reserved_vm; /* VM_RESERVED|VM_IO pages */ + unsigned long def_flags; + unsigned long nr_ptes; /* Page table pages */ unsigned long start_code, end_code, start_data, end_data; unsigned long start_brk, brk, start_stack; unsigned long arg_start, arg_end, env_start, env_end; -- 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/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: email@kvack.org