From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752789AbYDXGhQ (ORCPT ); Thu, 24 Apr 2008 02:37:16 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751110AbYDXGhF (ORCPT ); Thu, 24 Apr 2008 02:37:05 -0400 Received: from rv-out-0708.google.com ([209.85.198.250]:6790 "EHLO rv-out-0506.google.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751056AbYDXGhE (ORCPT ); Thu, 24 Apr 2008 02:37:04 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=date:message-id:to:cc:subject:from:x-mailer:mime-version:content-type:content-transfer-encoding; b=bpMqPuy9R0ikI8umemWwlmKIS0nrrrbn2Yi73dmO/SMz0PSzVYL5BCLE3T1LZGL3+k0trCzOFV/XzHASrB0dty18tJ0MNwTs1hWCrbhchsxFSTP16E3nkkSJwjbb33aqNzIpSkSfc/ofl3w6qXYiJfmKlhRVWfFAGgGi4FP3JmY= Date: Thu, 24 Apr 2008 14:36:25 +0800 (CST) Message-Id: <20080424.143625.40747652.xiyou.wangcong@gmail.com> To: linux-kernel@vger.kernel.org Cc: akpm@osdl.org, jdike@addtoit.com, user-mode-linux-devel@lists.sourceforge.net Subject: [Patch] arch/um/kernel/mem.c: remove arch_validate() From: WANG Cong X-Mailer: Mew version 5.2 on Emacs 22.1 / Mule 5.0 (SAKAKI) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Remove arch_validate(), because no one uses it. Remove useless macro HAVE_ARCH_VALIDATE. Make the variable 'empty_bad_page' static. Compile testing passed. Cc: Jeff Dike Signed-off-by: WANG Cong --- arch/um/kernel/ksyms.c | 1 - arch/um/kernel/mem.c | 33 +-------------------------------- include/asm-um/page.h | 3 --- 3 files changed, 1 insertions(+), 36 deletions(-) diff --git a/arch/um/kernel/ksyms.c b/arch/um/kernel/ksyms.c index 66e2a30..cc1b5f1 100644 --- a/arch/um/kernel/ksyms.c +++ b/arch/um/kernel/ksyms.c @@ -18,7 +18,6 @@ EXPORT_SYMBOL(get_signals); EXPORT_SYMBOL(kernel_thread); EXPORT_SYMBOL(sys_waitpid); EXPORT_SYMBOL(flush_tlb_range); -EXPORT_SYMBOL(arch_validate); EXPORT_SYMBOL(high_physmem); EXPORT_SYMBOL(empty_zero_page); diff --git a/arch/um/kernel/mem.c b/arch/um/kernel/mem.c index 2eea1ff..88fc1c8 100644 --- a/arch/um/kernel/mem.c +++ b/arch/um/kernel/mem.c @@ -21,7 +21,7 @@ /* allocated in paging_init, zeroed in mem_init, and unchanged thereafter */ unsigned long *empty_zero_page = NULL; /* allocated in paging_init and unchanged thereafter */ -unsigned long *empty_bad_page = NULL; +static unsigned long *empty_bad_page = NULL; /* * Initialized during boot, and readonly for initializing page tables @@ -240,37 +240,6 @@ void __init paging_init(void) #endif } -struct page *arch_validate(struct page *page, gfp_t mask, int order) -{ - unsigned long addr, zero = 0; - int i; - - again: - if (page == NULL) - return page; - if (PageHighMem(page)) - return page; - - addr = (unsigned long) page_address(page); - for (i = 0; i < (1 << order); i++) { - current->thread.fault_addr = (void *) addr; - if (__do_copy_to_user((void __user *) addr, &zero, - sizeof(zero), - ¤t->thread.fault_addr, - ¤t->thread.fault_catcher)) { - if (!(mask & __GFP_WAIT)) - return NULL; - else break; - } - addr += PAGE_SIZE; - } - - if (i == (1 << order)) - return page; - page = alloc_pages(mask, order); - goto again; -} - /* * This can't do anything because nothing in the kernel image can be freed * since it's not in kernel physical memory. diff --git a/include/asm-um/page.h b/include/asm-um/page.h index 381f96b..4b489e3 100644 --- a/include/asm-um/page.h +++ b/include/asm-um/page.h @@ -114,9 +114,6 @@ extern unsigned long uml_physmem; #define pfn_valid(pfn) ((pfn) < max_mapnr) #define virt_addr_valid(v) pfn_valid(phys_to_pfn(__pa(v))) -extern struct page *arch_validate(struct page *page, gfp_t mask, int order); -#define HAVE_ARCH_VALIDATE - #include #include -- 1.5.2.4