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![Linus Torvalds](/assets/img/avatar_default.png)
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
205 lines
5.5 KiB
C
205 lines
5.5 KiB
C
/*
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* JFFS2 -- Journalling Flash File System, Version 2.
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*
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* Copyright (C) 2001-2003 Red Hat, Inc.
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*
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* Created by David Woodhouse <dwmw2@infradead.org>
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*
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* For licensing information, see the file 'LICENCE' in this directory.
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*
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* $Id: malloc.c,v 1.28 2004/11/16 20:36:11 dwmw2 Exp $
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*
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*/
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#include <linux/kernel.h>
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#include <linux/slab.h>
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#include <linux/init.h>
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#include <linux/jffs2.h>
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#include "nodelist.h"
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#if 0
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#define JFFS2_SLAB_POISON SLAB_POISON
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#else
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#define JFFS2_SLAB_POISON 0
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#endif
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// replace this by #define D3 (x) x for cache debugging
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#define D3(x)
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/* These are initialised to NULL in the kernel startup code.
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If you're porting to other operating systems, beware */
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static kmem_cache_t *full_dnode_slab;
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static kmem_cache_t *raw_dirent_slab;
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static kmem_cache_t *raw_inode_slab;
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static kmem_cache_t *tmp_dnode_info_slab;
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static kmem_cache_t *raw_node_ref_slab;
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static kmem_cache_t *node_frag_slab;
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static kmem_cache_t *inode_cache_slab;
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int __init jffs2_create_slab_caches(void)
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{
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full_dnode_slab = kmem_cache_create("jffs2_full_dnode",
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sizeof(struct jffs2_full_dnode),
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0, JFFS2_SLAB_POISON, NULL, NULL);
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if (!full_dnode_slab)
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goto err;
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raw_dirent_slab = kmem_cache_create("jffs2_raw_dirent",
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sizeof(struct jffs2_raw_dirent),
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0, JFFS2_SLAB_POISON, NULL, NULL);
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if (!raw_dirent_slab)
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goto err;
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raw_inode_slab = kmem_cache_create("jffs2_raw_inode",
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sizeof(struct jffs2_raw_inode),
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0, JFFS2_SLAB_POISON, NULL, NULL);
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if (!raw_inode_slab)
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goto err;
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tmp_dnode_info_slab = kmem_cache_create("jffs2_tmp_dnode",
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sizeof(struct jffs2_tmp_dnode_info),
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0, JFFS2_SLAB_POISON, NULL, NULL);
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if (!tmp_dnode_info_slab)
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goto err;
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raw_node_ref_slab = kmem_cache_create("jffs2_raw_node_ref",
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sizeof(struct jffs2_raw_node_ref),
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0, JFFS2_SLAB_POISON, NULL, NULL);
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if (!raw_node_ref_slab)
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goto err;
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node_frag_slab = kmem_cache_create("jffs2_node_frag",
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sizeof(struct jffs2_node_frag),
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0, JFFS2_SLAB_POISON, NULL, NULL);
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if (!node_frag_slab)
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goto err;
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inode_cache_slab = kmem_cache_create("jffs2_inode_cache",
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sizeof(struct jffs2_inode_cache),
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0, JFFS2_SLAB_POISON, NULL, NULL);
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if (inode_cache_slab)
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return 0;
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err:
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jffs2_destroy_slab_caches();
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return -ENOMEM;
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}
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void jffs2_destroy_slab_caches(void)
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{
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if(full_dnode_slab)
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kmem_cache_destroy(full_dnode_slab);
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if(raw_dirent_slab)
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kmem_cache_destroy(raw_dirent_slab);
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if(raw_inode_slab)
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kmem_cache_destroy(raw_inode_slab);
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if(tmp_dnode_info_slab)
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kmem_cache_destroy(tmp_dnode_info_slab);
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if(raw_node_ref_slab)
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kmem_cache_destroy(raw_node_ref_slab);
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if(node_frag_slab)
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kmem_cache_destroy(node_frag_slab);
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if(inode_cache_slab)
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kmem_cache_destroy(inode_cache_slab);
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}
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struct jffs2_full_dirent *jffs2_alloc_full_dirent(int namesize)
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{
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return kmalloc(sizeof(struct jffs2_full_dirent) + namesize, GFP_KERNEL);
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}
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void jffs2_free_full_dirent(struct jffs2_full_dirent *x)
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{
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kfree(x);
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}
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struct jffs2_full_dnode *jffs2_alloc_full_dnode(void)
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{
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struct jffs2_full_dnode *ret = kmem_cache_alloc(full_dnode_slab, GFP_KERNEL);
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D3 (printk (KERN_DEBUG "alloc_full_dnode at %p\n", ret));
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return ret;
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}
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void jffs2_free_full_dnode(struct jffs2_full_dnode *x)
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{
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D3 (printk (KERN_DEBUG "free full_dnode at %p\n", x));
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kmem_cache_free(full_dnode_slab, x);
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}
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struct jffs2_raw_dirent *jffs2_alloc_raw_dirent(void)
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{
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struct jffs2_raw_dirent *ret = kmem_cache_alloc(raw_dirent_slab, GFP_KERNEL);
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D3 (printk (KERN_DEBUG "alloc_raw_dirent\n", ret));
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return ret;
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}
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void jffs2_free_raw_dirent(struct jffs2_raw_dirent *x)
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{
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D3 (printk (KERN_DEBUG "free_raw_dirent at %p\n", x));
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kmem_cache_free(raw_dirent_slab, x);
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}
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struct jffs2_raw_inode *jffs2_alloc_raw_inode(void)
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{
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struct jffs2_raw_inode *ret = kmem_cache_alloc(raw_inode_slab, GFP_KERNEL);
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D3 (printk (KERN_DEBUG "alloc_raw_inode at %p\n", ret));
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return ret;
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}
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void jffs2_free_raw_inode(struct jffs2_raw_inode *x)
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{
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D3 (printk (KERN_DEBUG "free_raw_inode at %p\n", x));
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kmem_cache_free(raw_inode_slab, x);
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}
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struct jffs2_tmp_dnode_info *jffs2_alloc_tmp_dnode_info(void)
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{
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struct jffs2_tmp_dnode_info *ret = kmem_cache_alloc(tmp_dnode_info_slab, GFP_KERNEL);
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D3 (printk (KERN_DEBUG "alloc_tmp_dnode_info at %p\n", ret));
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return ret;
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}
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void jffs2_free_tmp_dnode_info(struct jffs2_tmp_dnode_info *x)
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{
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D3 (printk (KERN_DEBUG "free_tmp_dnode_info at %p\n", x));
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kmem_cache_free(tmp_dnode_info_slab, x);
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}
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struct jffs2_raw_node_ref *jffs2_alloc_raw_node_ref(void)
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{
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struct jffs2_raw_node_ref *ret = kmem_cache_alloc(raw_node_ref_slab, GFP_KERNEL);
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D3 (printk (KERN_DEBUG "alloc_raw_node_ref at %p\n", ret));
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return ret;
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}
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void jffs2_free_raw_node_ref(struct jffs2_raw_node_ref *x)
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{
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D3 (printk (KERN_DEBUG "free_raw_node_ref at %p\n", x));
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kmem_cache_free(raw_node_ref_slab, x);
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}
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struct jffs2_node_frag *jffs2_alloc_node_frag(void)
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{
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struct jffs2_node_frag *ret = kmem_cache_alloc(node_frag_slab, GFP_KERNEL);
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D3 (printk (KERN_DEBUG "alloc_node_frag at %p\n", ret));
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return ret;
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}
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void jffs2_free_node_frag(struct jffs2_node_frag *x)
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{
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D3 (printk (KERN_DEBUG "free_node_frag at %p\n", x));
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kmem_cache_free(node_frag_slab, x);
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}
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struct jffs2_inode_cache *jffs2_alloc_inode_cache(void)
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{
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struct jffs2_inode_cache *ret = kmem_cache_alloc(inode_cache_slab, GFP_KERNEL);
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D3 (printk(KERN_DEBUG "Allocated inocache at %p\n", ret));
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return ret;
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}
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void jffs2_free_inode_cache(struct jffs2_inode_cache *x)
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{
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D3 (printk(KERN_DEBUG "Freeing inocache at %p\n", x));
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kmem_cache_free(inode_cache_slab, x);
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}
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