Release 4.7 fs/jffs2/malloc.c

Directory: fs/jffs2
/*
 * JFFS2 -- Journalling Flash File System, Version 2.
 *
 * Copyright Â© 2001-2007 Red Hat, Inc.
 *
 * Created by David Woodhouse <dwmw2@infradead.org>
 *
 * For licensing information, see the file 'LICENCE' in this directory.
 *
 */


#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/init.h>
#include <linux/jffs2.h>
#include "nodelist.h"

/* These are initialised to NULL in the kernel startup code.
   If you're porting to other operating systems, beware */

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",
					    sizeof(struct jffs2_full_dnode),
					    0, 0, NULL);
	if (!full_dnode_slab)
		goto err;

	raw_dirent_slab = kmem_cache_create("jffs2_raw_dirent",
					    sizeof(struct jffs2_raw_dirent),
					    0, SLAB_HWCACHE_ALIGN, NULL);
	if (!raw_dirent_slab)
		goto err;

	raw_inode_slab = kmem_cache_create("jffs2_raw_inode",
					   sizeof(struct jffs2_raw_inode),
					   0, SLAB_HWCACHE_ALIGN, NULL);
	if (!raw_inode_slab)
		goto err;

	tmp_dnode_info_slab = kmem_cache_create("jffs2_tmp_dnode",
						sizeof(struct jffs2_tmp_dnode_info),
						0, 0, NULL);
	if (!tmp_dnode_info_slab)
		goto err;

	raw_node_ref_slab = kmem_cache_create("jffs2_refblock",
					      sizeof(struct jffs2_raw_node_ref) * (REFS_PER_BLOCK + 1),
					      0, 0, NULL);
	if (!raw_node_ref_slab)
		goto err;

	node_frag_slab = kmem_cache_create("jffs2_node_frag",
					   sizeof(struct jffs2_node_frag),
					   0, 0, NULL);
	if (!node_frag_slab)
		goto err;

	inode_cache_slab = kmem_cache_create("jffs2_inode_cache",
					     sizeof(struct jffs2_inode_cache),
					     0, 0, 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);
	if (!xattr_datum_cache)
		goto err;

	xattr_ref_cache = kmem_cache_create("jffs2_xattr_ref",
					   sizeof(struct jffs2_xattr_ref),
					   0, 0, NULL);
	if (!xattr_ref_cache)
		goto err;
#endif

	return 0;
 err:
	jffs2_destroy_slab_caches();
	return -ENOMEM;
}

Contributors
Person Tokens Prop Commits CommitProp
linus torvalds linus torvalds 196 71.53% 1 16.67%
kaigai kohei kaigai kohei 63 22.99% 1 16.67%
david woodhouse david woodhouse 10 3.65% 3 50.00%
artem bityutskiy artem bityutskiy 5 1.82% 1 16.67%
Total 274 100.00% 6 100.00%



void jffs2_destroy_slab_caches(void)
{
	kmem_cache_destroy(full_dnode_slab);
	kmem_cache_destroy(raw_dirent_slab);
	kmem_cache_destroy(raw_inode_slab);
	kmem_cache_destroy(tmp_dnode_info_slab);
	kmem_cache_destroy(raw_node_ref_slab);
	kmem_cache_destroy(node_frag_slab);
	kmem_cache_destroy(inode_cache_slab);
#ifdef CONFIG_JFFS2_FS_XATTR
	kmem_cache_destroy(xattr_datum_cache);
	kmem_cache_destroy(xattr_ref_cache);
#endif
}

Contributors
Person Tokens Prop Commits CommitProp
linus torvalds linus torvalds 42 73.68% 1 50.00%
kaigai kohei kaigai kohei 15 26.32% 1 50.00%
Total 57 100.00% 2 100.00%



struct jffs2_full_dirent *jffs2_alloc_full_dirent(int namesize)
{
	struct jffs2_full_dirent *ret;
	ret = kmalloc(sizeof(struct jffs2_full_dirent) + namesize, GFP_KERNEL);
	dbg_memalloc("%p\n", ret);
	return ret;
}

Contributors
Person Tokens Prop Commits CommitProp
linus torvalds linus torvalds 23 57.50% 1 33.33%
artem bityutskiy artem bityutskiy 17 42.50% 2 66.67%
Total 40 100.00% 3 100.00%



void jffs2_free_full_dirent(struct jffs2_full_dirent *x)
{
	dbg_memalloc("%p\n", x);
	kfree(x);
}

Contributors
Person Tokens Prop Commits CommitProp
linus torvalds linus torvalds 15 68.18% 1 33.33%
artem bityutskiy artem bityutskiy 7 31.82% 2 66.67%
Total 22 100.00% 3 100.00%



struct jffs2_full_dnode *jffs2_alloc_full_dnode(void)
{
	struct jffs2_full_dnode *ret;
	ret = kmem_cache_alloc(full_dnode_slab, GFP_KERNEL);
	dbg_memalloc("%p\n", ret);
	return ret;
}

Contributors
Person Tokens Prop Commits CommitProp
linus torvalds linus torvalds 20 60.61% 1 25.00%
david woodhouse david woodhouse 7 21.21% 1 25.00%
artem bityutskiy artem bityutskiy 6 18.18% 2 50.00%
Total 33 100.00% 4 100.00%



void jffs2_free_full_dnode(struct jffs2_full_dnode *x)
{
	dbg_memalloc("%p\n", x);
	kmem_cache_free(full_dnode_slab, x);
}

Contributors
Person Tokens Prop Commits CommitProp
linus torvalds linus torvalds 17 70.83% 1 25.00%
david woodhouse david woodhouse 5 20.83% 1 25.00%
artem bityutskiy artem bityutskiy 2 8.33% 2 50.00%
Total 24 100.00% 4 100.00%



struct jffs2_raw_dirent *jffs2_alloc_raw_dirent(void)
{
	struct jffs2_raw_dirent *ret;
	ret = kmem_cache_alloc(raw_dirent_slab, GFP_KERNEL);
	dbg_memalloc("%p\n", ret);
	return ret;
}

Contributors
Person Tokens Prop Commits CommitProp
linus torvalds linus torvalds 16 48.48% 1 25.00%
david woodhouse david woodhouse 11 33.33% 1 25.00%
artem bityutskiy artem bityutskiy 6 18.18% 2 50.00%
Total 33 100.00% 4 100.00%



void jffs2_free_raw_dirent(struct jffs2_raw_dirent *x)
{
	dbg_memalloc("%p\n", x);
	kmem_cache_free(raw_dirent_slab, x);
}

Contributors
Person Tokens Prop Commits CommitProp
linus torvalds linus torvalds 17 70.83% 1 25.00%
david woodhouse david woodhouse 5 20.83% 1 25.00%
artem bityutskiy artem bityutskiy 2 8.33% 2 50.00%
Total 24 100.00% 4 100.00%



struct jffs2_raw_inode *jffs2_alloc_raw_inode(void)
{
	struct jffs2_raw_inode *ret;
	ret = kmem_cache_alloc(raw_inode_slab, GFP_KERNEL);
	dbg_memalloc("%p\n", ret);
	return ret;
}

Contributors
Person Tokens Prop Commits CommitProp
linus torvalds linus torvalds 16 48.48% 1 25.00%
david woodhouse david woodhouse 11 33.33% 1 25.00%
artem bityutskiy artem bityutskiy 6 18.18% 2 50.00%
Total 33 100.00% 4 100.00%



void jffs2_free_raw_inode(struct jffs2_raw_inode *x)
{
	dbg_memalloc("%p\n", x);
	kmem_cache_free(raw_inode_slab, x);
}

Contributors
Person Tokens Prop Commits CommitProp
linus torvalds linus torvalds 17 70.83% 1 25.00%
david woodhouse david woodhouse 5 20.83% 1 25.00%
artem bityutskiy artem bityutskiy 2 8.33% 2 50.00%
Total 24 100.00% 4 100.00%



struct jffs2_tmp_dnode_info *jffs2_alloc_tmp_dnode_info(void)
{
	struct jffs2_tmp_dnode_info *ret;
	ret = kmem_cache_alloc(tmp_dnode_info_slab, GFP_KERNEL);
	dbg_memalloc("%p\n",
		ret);
	return ret;
}

Contributors
Person Tokens Prop Commits CommitProp
linus torvalds linus torvalds 16 48.48% 1 25.00%
david woodhouse david woodhouse 11 33.33% 1 25.00%
artem bityutskiy artem bityutskiy 6 18.18% 2 50.00%
Total 33 100.00% 4 100.00%



void jffs2_free_tmp_dnode_info(struct jffs2_tmp_dnode_info *x)
{
	dbg_memalloc("%p\n", x);
	kmem_cache_free(tmp_dnode_info_slab, x);
}

Contributors
Person Tokens Prop Commits CommitProp
linus torvalds linus torvalds 17 70.83% 1 25.00%
david woodhouse david woodhouse 5 20.83% 1 25.00%
artem bityutskiy artem bityutskiy 2 8.33% 2 50.00%
Total 24 100.00% 4 100.00%



static struct jffs2_raw_node_ref *jffs2_alloc_refblock(void)
{
	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;
}

Contributors
Person Tokens Prop Commits CommitProp
david woodhouse david woodhouse 88 98.88% 1 50.00%
adrian bunk adrian bunk 1 1.12% 1 50.00%
Total 89 100.00% 2 100.00%



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;
}

Contributors
Person Tokens Prop Commits CommitProp
david woodhouse david woodhouse 175 98.31% 4 66.67%
linus torvalds linus torvalds 2 1.12% 1 16.67%
artem bityutskiy artem bityutskiy 1 0.56% 1 16.67%
Total 178 100.00% 6 100.00%



void jffs2_free_refblock(struct jffs2_raw_node_ref *x)
{
	dbg_memalloc("%p\n", x);
	kmem_cache_free(raw_node_ref_slab, x);
}

Contributors
Person Tokens Prop Commits CommitProp
linus torvalds linus torvalds 16 66.67% 1 20.00%
david woodhouse david woodhouse 6 25.00% 2 40.00%
artem bityutskiy artem bityutskiy 2 8.33% 2 40.00%
Total 24 100.00% 5 100.00%



struct jffs2_node_frag *jffs2_alloc_node_frag(void)
{
	struct jffs2_node_frag *ret;
	ret = kmem_cache_alloc(node_frag_slab, GFP_KERNEL);
	dbg_memalloc("%p\n", ret);
	return ret;
}

Contributors
Person Tokens Prop Commits CommitProp
linus torvalds linus torvalds 16 48.48% 1 25.00%
david woodhouse david woodhouse 11 33.33% 1 25.00%
artem bityutskiy artem bityutskiy 6 18.18% 2 50.00%
Total 33 100.00% 4 100.00%



void jffs2_free_node_frag(struct jffs2_node_frag *x)
{
	dbg_memalloc("%p\n", x);
	kmem_cache_free(node_frag_slab, x);
}

Contributors
Person Tokens Prop Commits CommitProp
linus torvalds linus torvalds 17 70.83% 1 25.00%
david woodhouse david woodhouse 5 20.83% 1 25.00%
artem bityutskiy artem bityutskiy 2 8.33% 2 50.00%
Total 24 100.00% 4 100.00%



struct jffs2_inode_cache *jffs2_alloc_inode_cache(void)
{
	struct jffs2_inode_cache *ret;
	ret = kmem_cache_alloc(inode_cache_slab, GFP_KERNEL);
	dbg_memalloc("%p\n", ret);
	return ret;
}

Contributors
Person Tokens Prop Commits CommitProp
linus torvalds linus torvalds 27 81.82% 1 33.33%
artem bityutskiy artem bityutskiy 6 18.18% 2 66.67%
Total 33 100.00% 3 100.00%



void jffs2_free_inode_cache(struct jffs2_inode_cache *x)
{
	dbg_memalloc("%p\n", x);
	kmem_cache_free(inode_cache_slab, x);
}

Contributors
Person Tokens Prop Commits CommitProp
linus torvalds linus torvalds 22 91.67% 1 33.33%
artem bityutskiy artem bityutskiy 2 8.33% 2 66.67%
Total 24 100.00% 3 100.00%

#ifdef CONFIG_JFFS2_FS_XATTR


struct jffs2_xattr_datum *jffs2_alloc_xattr_datum(void)
{
	struct jffs2_xattr_datum *xd;
	xd = kmem_cache_zalloc(xattr_datum_cache, GFP_KERNEL);
	dbg_memalloc("%p\n", xd);
	if (!xd)
		return NULL;

	xd->class = RAWNODE_CLASS_XATTR_DATUM;
	xd->node = (void *)xd;
	INIT_LIST_HEAD(&xd->xindex);
	return xd;
}

Contributors
Person Tokens Prop Commits CommitProp
kaigai kohei kaigai kohei 56 86.15% 2 50.00%
zhouyi zhou zhouyi zhou 8 12.31% 1 25.00%
wei yongjun wei yongjun 1 1.54% 1 25.00%
Total 65 100.00% 4 100.00%



void jffs2_free_xattr_datum(struct jffs2_xattr_datum *xd)
{
	dbg_memalloc("%p\n", xd);
	kmem_cache_free(xattr_datum_cache, xd);
}

Contributors
Person Tokens Prop Commits CommitProp
kaigai kohei kaigai kohei 24 100.00% 1 100.00%
Total 24 100.00% 1 100.00%



struct jffs2_xattr_ref *jffs2_alloc_xattr_ref(void)
{
	struct jffs2_xattr_ref *ref;
	ref = kmem_cache_zalloc(xattr_ref_cache, GFP_KERNEL);
	dbg_memalloc("%p\n", ref);
	if (!ref)
		return NULL;

	ref->class = RAWNODE_CLASS_XATTR_REF;
	ref->node = (void *)ref;
	return ref;
}

Contributors
Person Tokens Prop Commits CommitProp
kaigai kohei kaigai kohei 48 84.21% 2 50.00%
zhouyi zhou zhouyi zhou 8 14.04% 1 25.00%
wei yongjun wei yongjun 1 1.75% 1 25.00%
Total 57 100.00% 4 100.00%



void jffs2_free_xattr_ref(struct jffs2_xattr_ref *ref)
{
	dbg_memalloc("%p\n", ref);
	kmem_cache_free(xattr_ref_cache, ref);
}
Contributors
Person Tokens Prop Commits CommitProp
kaigai kohei kaigai kohei 24 100.00% 1 100.00%
Total 24 100.00% 1 100.00%

#endif
Overall Contributors
Person Tokens Prop Commits CommitProp
linus torvalds linus torvalds 556 43.30% 1 5.88%
david woodhouse david woodhouse 356 27.73% 7 41.18%
kaigai kohei kaigai kohei 248 19.31% 2 11.76%
artem bityutskiy artem bityutskiy 80 6.23% 2 11.76%
christoph lameter christoph lameter 18 1.40% 1 5.88%
zhouyi zhou zhouyi zhou 16 1.25% 1 5.88%
joe perches joe perches 7 0.55% 1 5.88%
wei yongjun wei yongjun 2 0.16% 1 5.88%
adrian bunk adrian bunk 1 0.08% 1 5.88%
Total 1284 100.00% 17 100.00%
  Directory: fs/jffs2

Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
	Person	Tokens	Prop	Commits	CommitProp
linus torvalds	linus torvalds	196	71.53%	1	16.67%
kaigai kohei	kaigai kohei	63	22.99%	1	16.67%
david woodhouse	david woodhouse	10	3.65%	3	50.00%
artem bityutskiy	artem bityutskiy	5	1.82%	1	16.67%
	Total	274	100.00%	6	100.00%
cregit-Linux how code gets into the kernel

Release 4.7 fs/jffs2/malloc.c

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