/* * JFFS2 -- Journalling Flash File System, Version 2. * * Copyright (C) 2001-2003 Red Hat, Inc. * * Created by David Woodhouse <dwmw2@infradead.org> * * For licensing information, see the file 'LICENCE' in this directory. * * $Id: malloc.c,v 1.28 2004/11/16 20:36:11 dwmw2 Exp $ * */ #include <linux/kernel.h> #include <linux/slab.h> #include <linux/init.h> #include <linux/jffs2.h> #include "nodelist.h" #if 0 #define JFFS2_SLAB_POISON SLAB_POISON #else #define JFFS2_SLAB_POISON 0 #endif // replace this by #define D3 (x) x for cache debugging #define D3(x) /* These are initialised to NULL in the kernel startup code. If you're porting to other operating systems, beware */ static kmem_cache_t *full_dnode_slab; static kmem_cache_t *raw_dirent_slab; static kmem_cache_t *raw_inode_slab; static kmem_cache_t *tmp_dnode_info_slab; static kmem_cache_t *raw_node_ref_slab; static kmem_cache_t *node_frag_slab; static kmem_cache_t *inode_cache_slab; int __init jffs2_create_slab_caches(void) { full_dnode_slab = kmem_cache_create("jffs2_full_dnode", sizeof(struct jffs2_full_dnode), 0, JFFS2_SLAB_POISON, NULL, NULL); if (!full_dnode_slab) goto err; raw_dirent_slab = kmem_cache_create("jffs2_raw_dirent", sizeof(struct jffs2_raw_dirent), 0, JFFS2_SLAB_POISON, NULL, NULL); if (!raw_dirent_slab) goto err; raw_inode_slab = kmem_cache_create("jffs2_raw_inode", sizeof(struct jffs2_raw_inode), 0, JFFS2_SLAB_POISON, NULL, NULL); if (!raw_inode_slab) goto err; tmp_dnode_info_slab = kmem_cache_create("jffs2_tmp_dnode", sizeof(struct jffs2_tmp_dnode_info), 0, JFFS2_SLAB_POISON, NULL, NULL); if (!tmp_dnode_info_slab) goto err; raw_node_ref_slab = kmem_cache_create("jffs2_raw_node_ref", sizeof(struct jffs2_raw_node_ref), 0, JFFS2_SLAB_POISON, NULL, NULL); if (!raw_node_ref_slab) goto err; node_frag_slab = kmem_cache_create("jffs2_node_frag", sizeof(struct jffs2_node_frag), 0, JFFS2_SLAB_POISON, NULL, NULL); if (!node_frag_slab) goto err; inode_cache_slab = kmem_cache_create("jffs2_inode_cache", sizeof(struct jffs2_inode_cache), 0, JFFS2_SLAB_POISON, NULL, NULL); if (inode_cache_slab) return 0; err: jffs2_destroy_slab_caches(); return -ENOMEM; } void jffs2_destroy_slab_caches(void) { if(full_dnode_slab) kmem_cache_destroy(full_dnode_slab); if(raw_dirent_slab) kmem_cache_destroy(raw_dirent_slab); if(raw_inode_slab) kmem_cache_destroy(raw_inode_slab); if(tmp_dnode_info_slab) kmem_cache_destroy(tmp_dnode_info_slab); if(raw_node_ref_slab) kmem_cache_destroy(raw_node_ref_slab); if(node_frag_slab) kmem_cache_destroy(node_frag_slab); if(inode_cache_slab) kmem_cache_destroy(inode_cache_slab); } struct jffs2_full_dirent *jffs2_alloc_full_dirent(int namesize) { return kmalloc(sizeof(struct jffs2_full_dirent) + namesize, GFP_KERNEL); } void jffs2_free_full_dirent(struct jffs2_full_dirent *x) { kfree(x); } struct jffs2_full_dnode *jffs2_alloc_full_dnode(void) { struct jffs2_full_dnode *ret = kmem_cache_alloc(full_dnode_slab, GFP_KERNEL); D3 (printk (KERN_DEBUG "alloc_full_dnode at %p\n", ret)); return ret; } void jffs2_free_full_dnode(struct jffs2_full_dnode *x) { D3 (printk (KERN_DEBUG "free full_dnode at %p\n", x)); kmem_cache_free(full_dnode_slab, x); } struct jffs2_raw_dirent *jffs2_alloc_raw_dirent(void) { struct jffs2_raw_dirent *ret = kmem_cache_alloc(raw_dirent_slab, GFP_KERNEL); D3 (printk (KERN_DEBUG "alloc_raw_dirent\n", ret)); return ret; } void jffs2_free_raw_dirent(struct jffs2_raw_dirent *x) { D3 (printk (KERN_DEBUG "free_raw_dirent at %p\n", x)); kmem_cache_free(raw_dirent_slab, x); } struct jffs2_raw_inode *jffs2_alloc_raw_inode(void) { struct jffs2_raw_inode *ret = kmem_cache_alloc(raw_inode_slab, GFP_KERNEL); D3 (printk (KERN_DEBUG "alloc_raw_inode at %p\n", ret)); return ret; } void jffs2_free_raw_inode(struct jffs2_raw_inode *x) { D3 (printk (KERN_DEBUG "free_raw_inode at %p\n", x)); kmem_cache_free(raw_inode_slab, x); } struct jffs2_tmp_dnode_info *jffs2_alloc_tmp_dnode_info(void) { struct jffs2_tmp_dnode_info *ret = kmem_cache_alloc(tmp_dnode_info_slab, GFP_KERNEL); D3 (printk (KERN_DEBUG "alloc_tmp_dnode_info at %p\n", ret)); return ret; } void jffs2_free_tmp_dnode_info(struct jffs2_tmp_dnode_info *x) { D3 (printk (KERN_DEBUG "free_tmp_dnode_info at %p\n", x)); kmem_cache_free(tmp_dnode_info_slab, x); } struct jffs2_raw_node_ref *jffs2_alloc_raw_node_ref(void) { struct jffs2_raw_node_ref *ret = kmem_cache_alloc(raw_node_ref_slab, GFP_KERNEL); D3 (printk (KERN_DEBUG "alloc_raw_node_ref at %p\n", ret)); return ret; } void jffs2_free_raw_node_ref(struct jffs2_raw_node_ref *x) { D3 (printk (KERN_DEBUG "free_raw_node_ref at %p\n", x)); kmem_cache_free(raw_node_ref_slab, x); } struct jffs2_node_frag *jffs2_alloc_node_frag(void) { struct jffs2_node_frag *ret = kmem_cache_alloc(node_frag_slab, GFP_KERNEL); D3 (printk (KERN_DEBUG "alloc_node_frag at %p\n", ret)); return ret; } void jffs2_free_node_frag(struct jffs2_node_frag *x) { D3 (printk (KERN_DEBUG "free_node_frag at %p\n", x)); kmem_cache_free(node_frag_slab, x); } struct jffs2_inode_cache *jffs2_alloc_inode_cache(void) { struct jffs2_inode_cache *ret = kmem_cache_alloc(inode_cache_slab, GFP_KERNEL); D3 (printk(KERN_DEBUG "Allocated inocache at %p\n", ret)); return ret; } void jffs2_free_inode_cache(struct jffs2_inode_cache *x) { D3 (printk(KERN_DEBUG "Freeing inocache at %p\n", x)); kmem_cache_free(inode_cache_slab, x); }