FreeBSD/Linux Kernel Cross Reference
sys/fs/jffs2/malloc.c

     /*
      * JFFS2 -- Journalling Flash File System, Version 2.
      *
      * Copyright (C) 2001 Red Hat, Inc.
      *
      * Created by David Woodhouse <dwmw2@cambridge.redhat.com>
      *
      * The original JFFS, from which the design for JFFS2 was derived,
      * was designed and implemented by Axis Communications AB.
     *
     * The contents of this file are subject to the Red Hat eCos Public
     * License Version 1.1 (the "Licence"); you may not use this file
     * except in compliance with the Licence.  You may obtain a copy of
     * the Licence at http://www.redhat.com/
     *
     * Software distributed under the Licence is distributed on an "AS IS"
     * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied.
     * See the Licence for the specific language governing rights and
     * limitations under the Licence.
     *
     * The Original Code is JFFS2 - Journalling Flash File System, version 2
     *
     * Alternatively, the contents of this file may be used under the
     * terms of the GNU General Public License version 2 (the "GPL"), in
     * which case the provisions of the GPL are applicable instead of the
     * above.  If you wish to allow the use of your version of this file
     * only under the terms of the GPL and not to allow others to use your
     * version of this file under the RHEPL, indicate your decision by
     * deleting the provisions above and replace them with the notice and
     * other provisions required by the GPL.  If you do not delete the
     * provisions above, a recipient may use your version of this file
     * under either the RHEPL or the GPL.
     *
     * $Id: malloc.c,v 1.16 2001/03/15 15:38:24 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
    
    /* 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;
    
    void jffs2_free_tmp_dnode_info_list(struct jffs2_tmp_dnode_info *tn)
    {
            struct jffs2_tmp_dnode_info *next;
    
            while (tn) {
                    next = tn;
                    tn = tn->next;
                    jffs2_free_full_dnode(next->fn);
                    jffs2_free_tmp_dnode_info(next);
            }
    }
    
    void jffs2_free_full_dirent_list(struct jffs2_full_dirent *fd)
    {
            struct jffs2_full_dirent *next;
    
            while (fd) {
                    next = fd->next;
                    jffs2_free_full_dirent(fd);
                    fd = next;
            }
    }
    
    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)
   {
           void *ret = kmem_cache_alloc(full_dnode_slab, GFP_KERNEL);
           return ret;
   }
   
   void jffs2_free_full_dnode(struct jffs2_full_dnode *x)
   {
           kmem_cache_free(full_dnode_slab, x);
   }
   
   struct jffs2_raw_dirent *jffs2_alloc_raw_dirent(void)
   {
           return kmem_cache_alloc(raw_dirent_slab, GFP_KERNEL);
   }
   
   void jffs2_free_raw_dirent(struct jffs2_raw_dirent *x)
   {
           kmem_cache_free(raw_dirent_slab, x);
   }
   
   struct jffs2_raw_inode *jffs2_alloc_raw_inode(void)
   {
           return kmem_cache_alloc(raw_inode_slab, GFP_KERNEL);
   }
   
   void jffs2_free_raw_inode(struct jffs2_raw_inode *x)
   {
           kmem_cache_free(raw_inode_slab, x);
   }
   
   struct jffs2_tmp_dnode_info *jffs2_alloc_tmp_dnode_info(void)
   {
           return kmem_cache_alloc(tmp_dnode_info_slab, GFP_KERNEL);
   }
   
   void jffs2_free_tmp_dnode_info(struct jffs2_tmp_dnode_info *x)
   {
           kmem_cache_free(tmp_dnode_info_slab, x);
   }
   
   struct jffs2_raw_node_ref *jffs2_alloc_raw_node_ref(void)
   {
           return kmem_cache_alloc(raw_node_ref_slab, GFP_KERNEL);
   }
   
   void jffs2_free_raw_node_ref(struct jffs2_raw_node_ref *x)
   {
           kmem_cache_free(raw_node_ref_slab, x);
   }
   
   struct jffs2_node_frag *jffs2_alloc_node_frag(void)
   {
           return kmem_cache_alloc(node_frag_slab, GFP_KERNEL);
   }
   
   void jffs2_free_node_frag(struct jffs2_node_frag *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);
           D1(printk(KERN_DEBUG "Allocated inocache at %p\n", ret));
           return ret;
   }
   
   void jffs2_free_inode_cache(struct jffs2_inode_cache *x)
   {
           D1(printk(KERN_DEBUG "Freeing inocache at %p\n", x));
           kmem_cache_free(inode_cache_slab, x);
   }
   

Cache object: b0eb040f1d5701c6a2d92c042e28e343