Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761653Ab2EQKzM (ORCPT ); Thu, 17 May 2012 06:55:12 -0400 Received: from mailout1.w1.samsung.com ([210.118.77.11]:60161 "EHLO mailout1.w1.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1760405Ab2EQKzI (ORCPT ); Thu, 17 May 2012 06:55:08 -0400 Date: Thu, 17 May 2012 12:54:44 +0200 From: Marek Szyprowski Subject: [PATCHv2 3/4] mm: vmalloc: add VM_DMA flag to indicate areas used by dma-mapping framework In-reply-to: <1337252085-22039-1-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: <1337252085-22039-4-git-send-email-m.szyprowski@samsung.com> MIME-version: 1.0 X-Mailer: git-send-email 1.7.10.1 Content-type: TEXT/PLAIN Content-transfer-encoding: 7BIT References: <1337252085-22039-1-git-send-email-m.szyprowski@samsung.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1520 Lines: 44 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(+) 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"); -- 1.7.10.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/