Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756089Ab3ENB51 (ORCPT ); Mon, 13 May 2013 21:57:27 -0400 Received: from fgwmail5.fujitsu.co.jp ([192.51.44.35]:39021 "EHLO fgwmail5.fujitsu.co.jp" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755731Ab3ENB5Z (ORCPT ); Mon, 13 May 2013 21:57:25 -0400 From: HATAYAMA Daisuke Subject: [PATCH v5 3/8] vmalloc: make find_vm_area check in range To: vgoyal@redhat.com, ebiederm@xmission.com, akpm@linux-foundation.org Cc: cpw@sgi.com, kumagai-atsushi@mxc.nes.nec.co.jp, lisa.mitchell@hp.com, kexec@lists.infradead.org, linux-kernel@vger.kernel.org, zhangyanfei@cn.fujitsu.com, jingbai.ma@hp.com, linux-mm@kvack.org Date: Tue, 14 May 2013 10:57:23 +0900 Message-ID: <20130514015723.18697.34468.stgit@localhost6.localdomain6> In-Reply-To: <20130514015622.18697.77191.stgit@localhost6.localdomain6> References: <20130514015622.18697.77191.stgit@localhost6.localdomain6> User-Agent: StGIT/0.14.3 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1299 Lines: 36 Currently, __find_vmap_area searches for the kernel VM area starting at a given address. This patch changes this behavior so that it searches for the kernel VM area to which the address belongs. This change is needed by remap_vmalloc_range_partial to be introduced in later patch that receives any position of kernel VM area as target address. This patch changes the condition (addr > va->va_start) to the equivalent (addr >= va->va_end) by taking advantage of the fact that each kernel VM area is non-overlapping. Signed-off-by: HATAYAMA Daisuke --- mm/vmalloc.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/mm/vmalloc.c b/mm/vmalloc.c index d365724..3875fa2 100644 --- a/mm/vmalloc.c +++ b/mm/vmalloc.c @@ -292,7 +292,7 @@ static struct vmap_area *__find_vmap_area(unsigned long addr) va = rb_entry(n, struct vmap_area, rb_node); if (addr < va->va_start) n = n->rb_left; - else if (addr > va->va_start) + else if (addr >= va->va_end) n = n->rb_right; else return va; -- 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/