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-rw-r--r--fs/yaffs2/yaffs_allocator.c396
1 files changed, 0 insertions, 396 deletions
diff --git a/fs/yaffs2/yaffs_allocator.c b/fs/yaffs2/yaffs_allocator.c
deleted file mode 100644
index f9cd5be..0000000
--- a/fs/yaffs2/yaffs_allocator.c
+++ /dev/null
@@ -1,396 +0,0 @@
-/*
- * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
- *
- * Copyright (C) 2002-2010 Aleph One Ltd.
- * for Toby Churchill Ltd and Brightstar Engineering
- *
- * Created by Charles Manning <charles@aleph1.co.uk>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include "yaffs_allocator.h"
-#include "yaffs_guts.h"
-#include "yaffs_trace.h"
-#include "yportenv.h"
-
-#ifdef CONFIG_YAFFS_KMALLOC_ALLOCATOR
-
-void yaffs_deinit_raw_tnodes_and_objs(struct yaffs_dev *dev)
-{
- dev = dev;
-}
-
-void yaffs_init_raw_tnodes_and_objs(struct yaffs_dev *dev)
-{
- dev = dev;
-}
-
-struct yaffs_tnode *yaffs_alloc_raw_tnode(struct yaffs_dev *dev)
-{
- return (struct yaffs_tnode *)kmalloc(dev->tnode_size, GFP_NOFS);
-}
-
-void yaffs_free_raw_tnode(struct yaffs_dev *dev, struct yaffs_tnode *tn)
-{
- dev = dev;
- kfree(tn);
-}
-
-void yaffs_init_raw_objs(struct yaffs_dev *dev)
-{
- dev = dev;
-}
-
-void yaffs_deinit_raw_objs(struct yaffs_dev *dev)
-{
- dev = dev;
-}
-
-struct yaffs_obj *yaffs_alloc_raw_obj(struct yaffs_dev *dev)
-{
- dev = dev;
- return (struct yaffs_obj *)kmalloc(sizeof(struct yaffs_obj));
-}
-
-void yaffs_free_raw_obj(struct yaffs_dev *dev, struct yaffs_obj *obj)
-{
-
- dev = dev;
- kfree(obj);
-}
-
-#else
-
-struct yaffs_tnode_list {
- struct yaffs_tnode_list *next;
- struct yaffs_tnode *tnodes;
-};
-
-struct yaffs_obj_list {
- struct yaffs_obj_list *next;
- struct yaffs_obj *objects;
-};
-
-struct yaffs_allocator {
- int n_tnodes_created;
- struct yaffs_tnode *free_tnodes;
- int n_free_tnodes;
- struct yaffs_tnode_list *alloc_tnode_list;
-
- int n_obj_created;
- struct yaffs_obj *free_objs;
- int n_free_objects;
-
- struct yaffs_obj_list *allocated_obj_list;
-};
-
-static void yaffs_deinit_raw_tnodes(struct yaffs_dev *dev)
-{
-
- struct yaffs_allocator *allocator =
- (struct yaffs_allocator *)dev->allocator;
-
- struct yaffs_tnode_list *tmp;
-
- if (!allocator) {
- YBUG();
- return;
- }
-
- while (allocator->alloc_tnode_list) {
- tmp = allocator->alloc_tnode_list->next;
-
- kfree(allocator->alloc_tnode_list->tnodes);
- kfree(allocator->alloc_tnode_list);
- allocator->alloc_tnode_list = tmp;
-
- }
-
- allocator->free_tnodes = NULL;
- allocator->n_free_tnodes = 0;
- allocator->n_tnodes_created = 0;
-}
-
-static void yaffs_init_raw_tnodes(struct yaffs_dev *dev)
-{
- struct yaffs_allocator *allocator = dev->allocator;
-
- if (allocator) {
- allocator->alloc_tnode_list = NULL;
- allocator->free_tnodes = NULL;
- allocator->n_free_tnodes = 0;
- allocator->n_tnodes_created = 0;
- } else {
- YBUG();
- }
-}
-
-static int yaffs_create_tnodes(struct yaffs_dev *dev, int n_tnodes)
-{
- struct yaffs_allocator *allocator =
- (struct yaffs_allocator *)dev->allocator;
- int i;
- struct yaffs_tnode *new_tnodes;
- u8 *mem;
- struct yaffs_tnode *curr;
- struct yaffs_tnode *next;
- struct yaffs_tnode_list *tnl;
-
- if (!allocator) {
- YBUG();
- return YAFFS_FAIL;
- }
-
- if (n_tnodes < 1)
- return YAFFS_OK;
-
- /* make these things */
-
- new_tnodes = kmalloc(n_tnodes * dev->tnode_size, GFP_NOFS);
- mem = (u8 *) new_tnodes;
-
- if (!new_tnodes) {
- yaffs_trace(YAFFS_TRACE_ERROR,
- "yaffs: Could not allocate Tnodes");
- return YAFFS_FAIL;
- }
-
- /* New hookup for wide tnodes */
- for (i = 0; i < n_tnodes - 1; i++) {
- curr = (struct yaffs_tnode *)&mem[i * dev->tnode_size];
- next = (struct yaffs_tnode *)&mem[(i + 1) * dev->tnode_size];
- curr->internal[0] = next;
- }
-
- curr = (struct yaffs_tnode *)&mem[(n_tnodes - 1) * dev->tnode_size];
- curr->internal[0] = allocator->free_tnodes;
- allocator->free_tnodes = (struct yaffs_tnode *)mem;
-
- allocator->n_free_tnodes += n_tnodes;
- allocator->n_tnodes_created += n_tnodes;
-
- /* Now add this bunch of tnodes to a list for freeing up.
- * NB If we can't add this to the management list it isn't fatal
- * but it just means we can't free this bunch of tnodes later.
- */
-
- tnl = kmalloc(sizeof(struct yaffs_tnode_list), GFP_NOFS);
- if (!tnl) {
- yaffs_trace(YAFFS_TRACE_ERROR,
- "Could not add tnodes to management list");
- return YAFFS_FAIL;
- } else {
- tnl->tnodes = new_tnodes;
- tnl->next = allocator->alloc_tnode_list;
- allocator->alloc_tnode_list = tnl;
- }
-
- yaffs_trace(YAFFS_TRACE_ALLOCATE,"Tnodes added");
-
- return YAFFS_OK;
-}
-
-struct yaffs_tnode *yaffs_alloc_raw_tnode(struct yaffs_dev *dev)
-{
- struct yaffs_allocator *allocator =
- (struct yaffs_allocator *)dev->allocator;
- struct yaffs_tnode *tn = NULL;
-
- if (!allocator) {
- YBUG();
- return NULL;
- }
-
- /* If there are none left make more */
- if (!allocator->free_tnodes)
- yaffs_create_tnodes(dev, YAFFS_ALLOCATION_NTNODES);
-
- if (allocator->free_tnodes) {
- tn = allocator->free_tnodes;
- allocator->free_tnodes = allocator->free_tnodes->internal[0];
- allocator->n_free_tnodes--;
- }
-
- return tn;
-}
-
-/* FreeTnode frees up a tnode and puts it back on the free list */
-void yaffs_free_raw_tnode(struct yaffs_dev *dev, struct yaffs_tnode *tn)
-{
- struct yaffs_allocator *allocator = dev->allocator;
-
- if (!allocator) {
- YBUG();
- return;
- }
-
- if (tn) {
- tn->internal[0] = allocator->free_tnodes;
- allocator->free_tnodes = tn;
- allocator->n_free_tnodes++;
- }
- dev->checkpoint_blocks_required = 0; /* force recalculation */
-}
-
-static void yaffs_init_raw_objs(struct yaffs_dev *dev)
-{
- struct yaffs_allocator *allocator = dev->allocator;
-
- if (allocator) {
- allocator->allocated_obj_list = NULL;
- allocator->free_objs = NULL;
- allocator->n_free_objects = 0;
- } else {
- YBUG();
- }
-}
-
-static void yaffs_deinit_raw_objs(struct yaffs_dev *dev)
-{
- struct yaffs_allocator *allocator = dev->allocator;
- struct yaffs_obj_list *tmp;
-
- if (!allocator) {
- YBUG();
- return;
- }
-
- while (allocator->allocated_obj_list) {
- tmp = allocator->allocated_obj_list->next;
- kfree(allocator->allocated_obj_list->objects);
- kfree(allocator->allocated_obj_list);
-
- allocator->allocated_obj_list = tmp;
- }
-
- allocator->free_objs = NULL;
- allocator->n_free_objects = 0;
- allocator->n_obj_created = 0;
-}
-
-static int yaffs_create_free_objs(struct yaffs_dev *dev, int n_obj)
-{
- struct yaffs_allocator *allocator = dev->allocator;
-
- int i;
- struct yaffs_obj *new_objs;
- struct yaffs_obj_list *list;
-
- if (!allocator) {
- YBUG();
- return YAFFS_FAIL;
- }
-
- if (n_obj < 1)
- return YAFFS_OK;
-
- /* make these things */
- new_objs = kmalloc(n_obj * sizeof(struct yaffs_obj), GFP_NOFS);
- list = kmalloc(sizeof(struct yaffs_obj_list), GFP_NOFS);
-
- if (!new_objs || !list) {
- if (new_objs) {
- kfree(new_objs);
- new_objs = NULL;
- }
- if (list) {
- kfree(list);
- list = NULL;
- }
- yaffs_trace(YAFFS_TRACE_ALLOCATE,
- "Could not allocate more objects");
- return YAFFS_FAIL;
- }
-
- /* Hook them into the free list */
- for (i = 0; i < n_obj - 1; i++) {
- new_objs[i].siblings.next =
- (struct list_head *)(&new_objs[i + 1]);
- }
-
- new_objs[n_obj - 1].siblings.next = (void *)allocator->free_objs;
- allocator->free_objs = new_objs;
- allocator->n_free_objects += n_obj;
- allocator->n_obj_created += n_obj;
-
- /* Now add this bunch of Objects to a list for freeing up. */
-
- list->objects = new_objs;
- list->next = allocator->allocated_obj_list;
- allocator->allocated_obj_list = list;
-
- return YAFFS_OK;
-}
-
-struct yaffs_obj *yaffs_alloc_raw_obj(struct yaffs_dev *dev)
-{
- struct yaffs_obj *obj = NULL;
- struct yaffs_allocator *allocator = dev->allocator;
-
- if (!allocator) {
- YBUG();
- return obj;
- }
-
- /* If there are none left make more */
- if (!allocator->free_objs)
- yaffs_create_free_objs(dev, YAFFS_ALLOCATION_NOBJECTS);
-
- if (allocator->free_objs) {
- obj = allocator->free_objs;
- allocator->free_objs =
- (struct yaffs_obj *)(allocator->free_objs->siblings.next);
- allocator->n_free_objects--;
- }
-
- return obj;
-}
-
-void yaffs_free_raw_obj(struct yaffs_dev *dev, struct yaffs_obj *obj)
-{
-
- struct yaffs_allocator *allocator = dev->allocator;
-
- if (!allocator)
- YBUG();
- else {
- /* Link into the free list. */
- obj->siblings.next = (struct list_head *)(allocator->free_objs);
- allocator->free_objs = obj;
- allocator->n_free_objects++;
- }
-}
-
-void yaffs_deinit_raw_tnodes_and_objs(struct yaffs_dev *dev)
-{
- if (dev->allocator) {
- yaffs_deinit_raw_tnodes(dev);
- yaffs_deinit_raw_objs(dev);
-
- kfree(dev->allocator);
- dev->allocator = NULL;
- } else {
- YBUG();
- }
-}
-
-void yaffs_init_raw_tnodes_and_objs(struct yaffs_dev *dev)
-{
- struct yaffs_allocator *allocator;
-
- if (!dev->allocator) {
- allocator = kmalloc(sizeof(struct yaffs_allocator), GFP_NOFS);
- if (allocator) {
- dev->allocator = allocator;
- yaffs_init_raw_tnodes(dev);
- yaffs_init_raw_objs(dev);
- }
- } else {
- YBUG();
- }
-}
-
-#endif
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