From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753187Ab2DMOGH (ORCPT ); Fri, 13 Apr 2012 10:06:07 -0400 Received: from mailout4.w1.samsung.com ([210.118.77.14]:62507 "EHLO mailout4.w1.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751523Ab2DMOGF (ORCPT ); Fri, 13 Apr 2012 10:06:05 -0400 MIME-version: 1.0 Content-transfer-encoding: 7BIT Content-type: TEXT/PLAIN Date: Fri, 13 Apr 2012 16:05:49 +0200 From: Marek Szyprowski Subject: [PATCH 3/4] mm: vmalloc: add VM_DMA flag to indicate areas used by dma-mapping framework In-reply-to: <1334325950-7881-1-git-send-email-m.szyprowski@samsung.com> To: linux-arm-kernel@lists.infradead.org, linaro-mm-sig@lists.linaro.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org Cc: Marek Szyprowski , Kyungmin Park , Arnd Bergmann , Russell King - ARM Linux , Chunsang Jeong , Krishna Reddy , Konrad Rzeszutek Wilk , Hiroshi Doyu , Subash Patel Message-id: <1334325950-7881-4-git-send-email-m.szyprowski@samsung.com> X-Mailer: git-send-email 1.7.9.1 References: <1334325950-7881-1-git-send-email-m.szyprowski@samsung.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add new type of vm_area intented to be used for consisten mappings created by dma-mapping framework. Signed-off-by: Marek Szyprowski Reviewed-by: Kyungmin Park --- include/linux/vmalloc.h | 1 + mm/vmalloc.c | 3 +++ 2 files changed, 4 insertions(+), 0 deletions(-) diff --git a/include/linux/vmalloc.h b/include/linux/vmalloc.h index 6071e91..8a9555a 100644 --- a/include/linux/vmalloc.h +++ b/include/linux/vmalloc.h @@ -14,6 +14,7 @@ struct vm_area_struct; /* vma defining user mapping in mm_types.h */ #define VM_USERMAP 0x00000008 /* suitable for remap_vmalloc_range */ #define VM_VPAGES 0x00000010 /* buffer for pages was vmalloc'ed */ #define VM_UNLIST 0x00000020 /* vm_struct is not listed in vmlist */ +#define VM_DMA 0x00000040 /* used by dma-mapping framework */ /* bits [20..32] reserved for arch specific ioremap internals */ /* diff --git a/mm/vmalloc.c b/mm/vmalloc.c index 8cb7f22..9c13bab 100644 --- a/mm/vmalloc.c +++ b/mm/vmalloc.c @@ -2582,6 +2582,9 @@ static int s_show(struct seq_file *m, void *p) if (v->flags & VM_IOREMAP) seq_printf(m, " ioremap"); + if (v->flags & VM_DMA) + seq_printf(m, " dma"); + if (v->flags & VM_ALLOC) seq_printf(m, " vmalloc"); -- 1.7.1.569.g6f426