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Fixed minor faults. More progress on vma merge.

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More to be done about vm object flags, page refcounts etc.
This commit is contained in:
Bahadir Balban
2008-03-11 01:07:44 +00:00
parent e8561aa541
commit 8447cd6ce3
4 changed files with 56 additions and 32 deletions
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14
tasks/mm0/include/vm_area.h
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@@ -1,7 +1,7 @@
/*
* Virtual memory area descriptors.
*
* Copyright (C) 2007 Bahadir Balban
* Copyright (C) 2007, 2008 Bahadir Balban
*/
#ifndef __VM_AREA_H__
#define __VM_AREA_H__
@@ -41,7 +41,7 @@ struct devpage {
};
struct page {
int count; /* Refcount */
int refcnt; /* Refcount */
struct spinlock lock; /* Page lock. */
struct list_head list; /* For list of a vm_object's in-memory pages */
struct vm_object *owner;/* The vm_object the page belongs to */
@@ -68,8 +68,11 @@ struct fault_data {
};
struct vm_pager_ops {
struct page *(*page_in)(struct vm_object *vm_obj, unsigned long pfn_offset);
struct page *(*page_out)(struct vm_object *vm_obj, unsigned long pfn_offset);
struct page *(*page_in)(struct vm_object *vm_obj,
unsigned long pfn_offset);
struct page *(*page_out)(struct vm_object *vm_obj,
unsigned long pfn_offset);
int (*release_pages)(struct vm_object *vm_obj);
};
/* Describes the pager task that handles a vm_area. */
@@ -115,7 +118,8 @@ struct vm_object {
unsigned int flags; /* Defines the type and flags of the object */
struct list_head list; /* List of all vm objects in memory */
struct vm_pager *pager; /* The pager for this object */
struct list_head page_cache; /* List of in-memory pages */
struct list_head page_cache;/* List of in-memory pages */
struct vm_object_ops ops; /* Operations on the object */
};
/* In memory representation of either a vfs file, a device. */