Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758029Ab3EOJGI (ORCPT ); Wed, 15 May 2013 05:06:08 -0400 Received: from fgwmail6.fujitsu.co.jp ([192.51.44.36]:58404 "EHLO fgwmail6.fujitsu.co.jp" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756677Ab3EOJGF (ORCPT ); Wed, 15 May 2013 05:06:05 -0400 From: HATAYAMA Daisuke Subject: [PATCH v6 4/8] 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, riel@redhat.com, walken@google.com, hughd@google.com, kosaki.motohiro@jp.fujitsu.com Date: Wed, 15 May 2013 18:06:03 +0900 Message-ID: <20130515090602.28109.90142.stgit@localhost6.localdomain6> In-Reply-To: <20130515090507.28109.28956.stgit@localhost6.localdomain6> References: <20130515090507.28109.28956.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/