*
* For licensing information, see the file 'LICENCE' in this directory.
*
- * $Id: malloc.c,v 1.28 2004/11/16 20:36:11 dwmw2 Exp $
+ * $Id: malloc.c,v 1.31 2005/11/07 11:14:40 gleixner Exp $
*
*/
#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;
+static struct kmem_cache *full_dnode_slab;
+static struct kmem_cache *raw_dirent_slab;
+static struct kmem_cache *raw_inode_slab;
+static struct kmem_cache *tmp_dnode_info_slab;
+static struct kmem_cache *raw_node_ref_slab;
+static struct kmem_cache *node_frag_slab;
+static struct kmem_cache *inode_cache_slab;
+#ifdef CONFIG_JFFS2_FS_XATTR
+static struct kmem_cache *xattr_datum_cache;
+static struct kmem_cache *xattr_ref_cache;
+#endif
int __init jffs2_create_slab_caches(void)
{
- full_dnode_slab = kmem_cache_create("jffs2_full_dnode",
+ full_dnode_slab = kmem_cache_create("jffs2_full_dnode",
sizeof(struct jffs2_full_dnode),
- 0, JFFS2_SLAB_POISON, NULL, NULL);
+ 0, 0, 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);
+ 0, 0, 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);
+ 0, 0, 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);
+ 0, 0, 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);
+ raw_node_ref_slab = kmem_cache_create("jffs2_refblock",
+ sizeof(struct jffs2_raw_node_ref) * (REFS_PER_BLOCK + 1),
+ 0, 0, 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);
+ 0, 0, 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;
+ 0, 0, NULL, NULL);
+ if (!inode_cache_slab)
+ goto err;
+
+#ifdef CONFIG_JFFS2_FS_XATTR
+ xattr_datum_cache = kmem_cache_create("jffs2_xattr_datum",
+ sizeof(struct jffs2_xattr_datum),
+ 0, 0, NULL, NULL);
+ if (!xattr_datum_cache)
+ goto err;
+
+ xattr_ref_cache = kmem_cache_create("jffs2_xattr_ref",
+ sizeof(struct jffs2_xattr_ref),
+ 0, 0, NULL, NULL);
+ if (!xattr_ref_cache)
+ goto err;
+#endif
+
+ return 0;
err:
jffs2_destroy_slab_caches();
return -ENOMEM;
kmem_cache_destroy(node_frag_slab);
if(inode_cache_slab)
kmem_cache_destroy(inode_cache_slab);
+#ifdef CONFIG_JFFS2_FS_XATTR
+ if (xattr_datum_cache)
+ kmem_cache_destroy(xattr_datum_cache);
+ if (xattr_ref_cache)
+ kmem_cache_destroy(xattr_ref_cache);
+#endif
}
struct jffs2_full_dirent *jffs2_alloc_full_dirent(int namesize)
{
- return kmalloc(sizeof(struct jffs2_full_dirent) + namesize, GFP_KERNEL);
+ struct jffs2_full_dirent *ret;
+ ret = kmalloc(sizeof(struct jffs2_full_dirent) + namesize, GFP_KERNEL);
+ dbg_memalloc("%p\n", ret);
+ return ret;
}
void jffs2_free_full_dirent(struct jffs2_full_dirent *x)
{
+ dbg_memalloc("%p\n", 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));
+ struct jffs2_full_dnode *ret;
+ ret = kmem_cache_alloc(full_dnode_slab, GFP_KERNEL);
+ dbg_memalloc("%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));
+ dbg_memalloc("%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));
+ struct jffs2_raw_dirent *ret;
+ ret = kmem_cache_alloc(raw_dirent_slab, GFP_KERNEL);
+ dbg_memalloc("%p\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));
+ dbg_memalloc("%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));
+ struct jffs2_raw_inode *ret;
+ ret = kmem_cache_alloc(raw_inode_slab, GFP_KERNEL);
+ dbg_memalloc("%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));
+ dbg_memalloc("%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));
+ struct jffs2_tmp_dnode_info *ret;
+ ret = kmem_cache_alloc(tmp_dnode_info_slab, GFP_KERNEL);
+ dbg_memalloc("%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));
+ dbg_memalloc("%p\n", x);
kmem_cache_free(tmp_dnode_info_slab, x);
}
-struct jffs2_raw_node_ref *jffs2_alloc_raw_node_ref(void)
+static struct jffs2_raw_node_ref *jffs2_alloc_refblock(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));
+ struct jffs2_raw_node_ref *ret;
+
+ ret = kmem_cache_alloc(raw_node_ref_slab, GFP_KERNEL);
+ if (ret) {
+ int i = 0;
+ for (i=0; i < REFS_PER_BLOCK; i++) {
+ ret[i].flash_offset = REF_EMPTY_NODE;
+ ret[i].next_in_ino = NULL;
+ }
+ ret[i].flash_offset = REF_LINK_NODE;
+ ret[i].next_in_ino = NULL;
+ }
return ret;
}
-void jffs2_free_raw_node_ref(struct jffs2_raw_node_ref *x)
+int jffs2_prealloc_raw_node_refs(struct jffs2_sb_info *c,
+ struct jffs2_eraseblock *jeb, int nr)
+{
+ struct jffs2_raw_node_ref **p, *ref;
+ int i = nr;
+
+ dbg_memalloc("%d\n", nr);
+
+ p = &jeb->last_node;
+ ref = *p;
+
+ dbg_memalloc("Reserving %d refs for block @0x%08x\n", nr, jeb->offset);
+
+ /* If jeb->last_node is really a valid node then skip over it */
+ if (ref && ref->flash_offset != REF_EMPTY_NODE)
+ ref++;
+
+ while (i) {
+ if (!ref) {
+ dbg_memalloc("Allocating new refblock linked from %p\n", p);
+ ref = *p = jffs2_alloc_refblock();
+ if (!ref)
+ return -ENOMEM;
+ }
+ if (ref->flash_offset == REF_LINK_NODE) {
+ p = &ref->next_in_ino;
+ ref = *p;
+ continue;
+ }
+ i--;
+ ref++;
+ }
+ jeb->allocated_refs = nr;
+
+ dbg_memalloc("Reserved %d refs for block @0x%08x, last_node is %p (%08x,%p)\n",
+ nr, jeb->offset, jeb->last_node, jeb->last_node->flash_offset,
+ jeb->last_node->next_in_ino);
+
+ return 0;
+}
+
+void jffs2_free_refblock(struct jffs2_raw_node_ref *x)
{
- D3 (printk (KERN_DEBUG "free_raw_node_ref at %p\n", x));
+ dbg_memalloc("%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));
+ struct jffs2_node_frag *ret;
+ ret = kmem_cache_alloc(node_frag_slab, GFP_KERNEL);
+ dbg_memalloc("%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));
+ dbg_memalloc("%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));
+ struct jffs2_inode_cache *ret;
+ ret = kmem_cache_alloc(inode_cache_slab, GFP_KERNEL);
+ dbg_memalloc("%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));
+ dbg_memalloc("%p\n", x);
kmem_cache_free(inode_cache_slab, x);
}
+#ifdef CONFIG_JFFS2_FS_XATTR
+struct jffs2_xattr_datum *jffs2_alloc_xattr_datum(void)
+{
+ struct jffs2_xattr_datum *xd;
+ xd = kmem_cache_alloc(xattr_datum_cache, GFP_KERNEL);
+ dbg_memalloc("%p\n", xd);
+
+ memset(xd, 0, sizeof(struct jffs2_xattr_datum));
+ xd->class = RAWNODE_CLASS_XATTR_DATUM;
+ xd->node = (void *)xd;
+ INIT_LIST_HEAD(&xd->xindex);
+ return xd;
+}
+
+void jffs2_free_xattr_datum(struct jffs2_xattr_datum *xd)
+{
+ dbg_memalloc("%p\n", xd);
+ kmem_cache_free(xattr_datum_cache, xd);
+}
+
+struct jffs2_xattr_ref *jffs2_alloc_xattr_ref(void)
+{
+ struct jffs2_xattr_ref *ref;
+ ref = kmem_cache_alloc(xattr_ref_cache, GFP_KERNEL);
+ dbg_memalloc("%p\n", ref);
+
+ memset(ref, 0, sizeof(struct jffs2_xattr_ref));
+ ref->class = RAWNODE_CLASS_XATTR_REF;
+ ref->node = (void *)ref;
+ return ref;
+}
+
+void jffs2_free_xattr_ref(struct jffs2_xattr_ref *ref)
+{
+ dbg_memalloc("%p\n", ref);
+ kmem_cache_free(xattr_ref_cache, ref);
+}
+#endif
git://git.onelab.eu / linux-2.6.git / blobdiff