From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751697AbXCSUFV (ORCPT ); Mon, 19 Mar 2007 16:05:21 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751744AbXCSUFV (ORCPT ); Mon, 19 Mar 2007 16:05:21 -0400 Received: from e1.ny.us.ibm.com ([32.97.182.141]:55280 "EHLO e1.ny.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751691AbXCSUFS (ORCPT ); Mon, 19 Mar 2007 16:05:18 -0400 From: Adam Litke Subject: [PATCH 1/7] Introduce the pagetable_operations and associated helper macros. Date: Mon, 19 Mar 2007 13:05:13 -0700 To: Andrew Morton Cc: Adam Litke , Arjan van de Ven , William Lee Irwin III , Christoph Hellwig , Ken Chen , linux-mm@kvack.org, linux-kernel@vger.kernel.org Message-Id: <20070319200513.17168.52238.stgit@localhost.localdomain> In-Reply-To: <20070319200502.17168.17175.stgit@localhost.localdomain> References: <20070319200502.17168.17175.stgit@localhost.localdomain> Content-Type: text/plain; charset=utf-8; format=fixed Content-Transfer-Encoding: 8bit User-Agent: StGIT/0.11 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Signed-off-by: Adam Litke --- include/linux/mm.h | 25 +++++++++++++++++++++++++ 1 files changed, 25 insertions(+), 0 deletions(-) diff --git a/include/linux/mm.h b/include/linux/mm.h index 60e0e4a..7089323 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -98,6 +98,7 @@ struct vm_area_struct { /* Function pointers to deal with this struct. */ struct vm_operations_struct * vm_ops; + const struct pagetable_operations_struct * pagetable_ops; /* Information about our backing store: */ unsigned long vm_pgoff; /* Offset (within vm_file) in PAGE_SIZE @@ -218,6 +219,30 @@ struct vm_operations_struct { }; struct mmu_gather; + +struct pagetable_operations_struct { + int (*fault)(struct mm_struct *mm, + struct vm_area_struct *vma, + unsigned long address, int write_access); + int (*copy_vma)(struct mm_struct *dst, struct mm_struct *src, + struct vm_area_struct *vma); + int (*pin_pages)(struct mm_struct *mm, struct vm_area_struct *vma, + struct page **pages, struct vm_area_struct **vmas, + unsigned long *position, int *length, int i); + void (*change_protection)(struct vm_area_struct *vma, + unsigned long address, unsigned long end, pgprot_t newprot); + unsigned long (*unmap_page_range)(struct vm_area_struct *vma, + unsigned long address, unsigned long end, long *zap_work); + void (*free_pgtable_range)(struct mmu_gather **tlb, + unsigned long addr, unsigned long end, + unsigned long floor, unsigned long ceiling); +}; + +#define has_pt_op(vma, op) \ + ((vma)->pagetable_ops && (vma)->pagetable_ops->op) +#define pt_op(vma, call) \ + ((vma)->pagetable_ops->call) + struct inode; #define page_private(page) ((page)->private)