[PATCH] JBD slab cleanups

From: Mingming Cao
Date: Fri Sep 14 2007 - 14:54:21 EST

jbd/jbd2: Replace slab allocations with page cache allocations

From: Christoph Lameter <clameter@xxxxxxx>

JBD should not pass slab pages down to the block layer.
Use page allocator pages instead. This will also prepare
JBD for the large blocksize patchset.

Tested on 2.6.23-rc6 with fsx runs fine.

Signed-off-by: Christoph Lameter <clameter@xxxxxxx>
Signed-off-by: Mingming Cao <cmm@xxxxxxxxxx>
---
fs/jbd/checkpoint.c | 2
fs/jbd/commit.c | 6 +-
fs/jbd/journal.c | 107 ++++---------------------------------------------
fs/jbd/transaction.c | 10 ++--
fs/jbd2/checkpoint.c | 2
fs/jbd2/commit.c | 6 +-
fs/jbd2/journal.c | 109 ++++----------------------------------------------
fs/jbd2/transaction.c | 18 ++++----
include/linux/jbd.h | 23 +++++++++-
include/linux/jbd2.h | 28 ++++++++++--
10 files changed, 83 insertions(+), 228 deletions(-)

Index: linux-2.6.23-rc5/fs/jbd/journal.c
===================================================================
--- linux-2.6.23-rc5.orig/fs/jbd/journal.c 2007-09-13 13:37:57.000000000 -0700
+++ linux-2.6.23-rc5/fs/jbd/journal.c 2007-09-13 13:45:39.000000000 -0700
@@ -83,7 +83,6 @@ EXPORT_SYMBOL(journal_force_commit);

static int journal_convert_superblock_v1(journal_t *, journal_superblock_t *);
static void __journal_abort_soft (journal_t *journal, int errno);
-static int journal_create_jbd_slab(size_t slab_size);

/*
* Helper function used to manage commit timeouts
@@ -334,10 +333,10 @@ repeat:
char *tmp;

jbd_unlock_bh_state(bh_in);
- tmp = jbd_slab_alloc(bh_in->b_size, GFP_NOFS);
+ tmp = jbd_alloc(bh_in->b_size, GFP_NOFS);
jbd_lock_bh_state(bh_in);
if (jh_in->b_frozen_data) {
- jbd_slab_free(tmp, bh_in->b_size);
+ jbd_free(tmp, bh_in->b_size);
goto repeat;
}

@@ -679,7 +678,7 @@ static journal_t * journal_init_common (
/* Set up a default-sized revoke table for the new mount. */
err = journal_init_revoke(journal, JOURNAL_REVOKE_DEFAULT_HASH);
if (err) {
- kfree(journal);
+ jbd_kfree(journal);
goto fail;
}
return journal;
@@ -728,7 +727,7 @@ journal_t * journal_init_dev(struct bloc
if (!journal->j_wbuf) {
printk(KERN_ERR "%s: Cant allocate bhs for commit thread\n",
__FUNCTION__);
- kfree(journal);
+ jbd_kfree(journal);
journal = NULL;
goto out;
}
@@ -782,7 +781,7 @@ journal_t * journal_init_inode (struct i
if (!journal->j_wbuf) {
printk(KERN_ERR "%s: Cant allocate bhs for commit thread\n",
__FUNCTION__);
- kfree(journal);
+ jbd_kfree(journal);
return NULL;
}

@@ -791,7 +790,7 @@ journal_t * journal_init_inode (struct i
if (err) {
printk(KERN_ERR "%s: Cannnot locate journal superblock\n",
__FUNCTION__);
- kfree(journal);
+ jbd_kfree(journal);
return NULL;
}

@@ -1095,13 +1094,6 @@ int journal_load(journal_t *journal)
}
}

- /*
- * Create a slab for this blocksize
- */
- err = journal_create_jbd_slab(be32_to_cpu(sb->s_blocksize));
- if (err)
- return err;
-
/* Let the recovery code check whether it needs to recover any
* data from the journal. */
if (journal_recover(journal))
@@ -1166,7 +1158,7 @@ void journal_destroy(journal_t *journal)
if (journal->j_revoke)
journal_destroy_revoke(journal);
kfree(journal->j_wbuf);
- kfree(journal);
+ jbd_kfree(journal);
}


@@ -1615,86 +1607,6 @@ int journal_blocks_per_page(struct inode
}

/*
- * Simple support for retrying memory allocations. Introduced to help to
- * debug different VM deadlock avoidance strategies.
- */
-void * __jbd_kmalloc (const char *where, size_t size, gfp_t flags, int retry)
-{
- return kmalloc(size, flags | (retry ? __GFP_NOFAIL : 0));
-}
-
-/*
- * jbd slab management: create 1k, 2k, 4k, 8k slabs as needed
- * and allocate frozen and commit buffers from these slabs.
- *
- * Reason for doing this is to avoid, SLAB_DEBUG - since it could
- * cause bh to cross page boundary.
- */
-
-#define JBD_MAX_SLABS 5
-#define JBD_SLAB_INDEX(size) (size >> 11)
-
-static struct kmem_cache *jbd_slab[JBD_MAX_SLABS];
-static const char *jbd_slab_names[JBD_MAX_SLABS] = {
- "jbd_1k", "jbd_2k", "jbd_4k", NULL, "jbd_8k"
-};
-
-static void journal_destroy_jbd_slabs(void)
-{
- int i;
-
- for (i = 0; i < JBD_MAX_SLABS; i++) {
- if (jbd_slab[i])
- kmem_cache_destroy(jbd_slab[i]);
- jbd_slab[i] = NULL;
- }
-}
-
-static int journal_create_jbd_slab(size_t slab_size)
-{
- int i = JBD_SLAB_INDEX(slab_size);
-
- BUG_ON(i >= JBD_MAX_SLABS);
-
- /*
- * Check if we already have a slab created for this size
- */
- if (jbd_slab[i])
- return 0;
-
- /*
- * Create a slab and force alignment to be same as slabsize -
- * this will make sure that allocations won't cross the page
- * boundary.
- */
- jbd_slab[i] = kmem_cache_create(jbd_slab_names[i],
- slab_size, slab_size, 0, NULL);
- if (!jbd_slab[i]) {
- printk(KERN_EMERG "JBD: no memory for jbd_slab cache\n");
- return -ENOMEM;
- }
- return 0;
-}
-
-void * jbd_slab_alloc(size_t size, gfp_t flags)
-{
- int idx;
-
- idx = JBD_SLAB_INDEX(size);
- BUG_ON(jbd_slab[idx] == NULL);
- return kmem_cache_alloc(jbd_slab[idx], flags | __GFP_NOFAIL);
-}
-
-void jbd_slab_free(void *ptr, size_t size)
-{
- int idx;
-
- idx = JBD_SLAB_INDEX(size);
- BUG_ON(jbd_slab[idx] == NULL);
- kmem_cache_free(jbd_slab[idx], ptr);
-}
-
-/*
* Journal_head storage management
*/
static struct kmem_cache *journal_head_cache;
@@ -1881,13 +1793,13 @@ static void __journal_remove_journal_hea
printk(KERN_WARNING "%s: freeing "
"b_frozen_data\n",
__FUNCTION__);
- jbd_slab_free(jh->b_frozen_data, bh->b_size);
+ jbd_free(jh->b_frozen_data, bh->b_size);
}
if (jh->b_committed_data) {
printk(KERN_WARNING "%s: freeing "
"b_committed_data\n",
__FUNCTION__);
- jbd_slab_free(jh->b_committed_data, bh->b_size);
+ jbd_free(jh->b_committed_data, bh->b_size);
}
bh->b_private = NULL;
jh->b_bh = NULL; /* debug, really */
@@ -2042,7 +1954,6 @@ static void journal_destroy_caches(void)
journal_destroy_revoke_caches();
journal_destroy_journal_head_cache();
journal_destroy_handle_cache();
- journal_destroy_jbd_slabs();
}

static int __init journal_init(void)
Index: linux-2.6.23-rc5/include/linux/jbd.h
===================================================================
--- linux-2.6.23-rc5.orig/include/linux/jbd.h 2007-09-13 13:37:57.000000000 -0700
+++ linux-2.6.23-rc5/include/linux/jbd.h 2007-09-13 13:42:27.000000000 -0700
@@ -71,9 +71,26 @@ extern int journal_enable_debug;
#define jbd_debug(f, a...) /**/
#endif

-extern void * __jbd_kmalloc (const char *where, size_t size, gfp_t flags, int retry);
-extern void * jbd_slab_alloc(size_t size, gfp_t flags);
-extern void jbd_slab_free(void *ptr, size_t size);
+static inline void *__jbd_kmalloc(const char *where, size_t size,
+ gfp_t flags, int retry)
+{
+ return kmalloc(size, flags | (retry ? __GFP_NOFAIL : 0));
+}
+
+static inline void jbd_kfree(void *ptr)
+{
+ return kfree(ptr);
+}
+
+static inline void *jbd_alloc(size_t size, gfp_t flags)
+{
+ return (void *)__get_free_pages(flags, get_order(size));
+}
+
+static inline void jbd_free(void *ptr, size_t size)
+{
+ free_pages((unsigned long)ptr, get_order(size));
+};

#define jbd_kmalloc(size, flags) \
__jbd_kmalloc(__FUNCTION__, (size), (flags), journal_oom_retry)
Index: linux-2.6.23-rc5/include/linux/jbd2.h
===================================================================
--- linux-2.6.23-rc5.orig/include/linux/jbd2.h 2007-09-13 13:37:58.000000000 -0700
+++ linux-2.6.23-rc5/include/linux/jbd2.h 2007-09-13 13:51:49.000000000 -0700
@@ -71,11 +71,27 @@ extern u8 jbd2_journal_enable_debug;
#define jbd_debug(f, a...) /**/
#endif

-extern void * __jbd2_kmalloc (const char *where, size_t size, gfp_t flags, int retry);
-extern void * jbd2_slab_alloc(size_t size, gfp_t flags);
-extern void jbd2_slab_free(void *ptr, size_t size);
+static inline void *__jbd2_kmalloc(const char *where, size_t size,
+ gfp_t flags, int retry)
+{
+ return kmalloc(size, flags | (retry ? __GFP_NOFAIL : 0));
+}
+static inline void jbd2_kfree(void *ptr)
+{
+ return kfree(ptr);
+}
+
+static inline void *jbd2_alloc(size_t size, gfp_t flags)
+{
+ return (void *)__get_free_pages(flags, get_order(size));
+}
+
+static inline void jbd2_free(void *ptr, size_t size)
+{
+ free_pages((unsigned long)ptr, get_order(size));
+};

-#define jbd_kmalloc(size, flags) \
+#define jbd2_kmalloc(size, flags) \
__jbd2_kmalloc(__FUNCTION__, (size), (flags), journal_oom_retry)
#define jbd_rep_kmalloc(size, flags) \
__jbd2_kmalloc(__FUNCTION__, (size), (flags), 1)
@@ -959,12 +975,12 @@ void jbd2_journal_put_journal_head(struc
*/
extern struct kmem_cache *jbd2_handle_cache;

-static inline handle_t *jbd_alloc_handle(gfp_t gfp_flags)
+static inline handle_t *jbd2_alloc_handle(gfp_t gfp_flags)
{
return kmem_cache_alloc(jbd2_handle_cache, gfp_flags);
}

-static inline void jbd_free_handle(handle_t *handle)
+static inline void jbd2_free_handle(handle_t *handle)
{
kmem_cache_free(jbd2_handle_cache, handle);
}
Index: linux-2.6.23-rc5/fs/jbd2/journal.c
===================================================================
--- linux-2.6.23-rc5.orig/fs/jbd2/journal.c 2007-09-13 13:37:57.000000000 -0700
+++ linux-2.6.23-rc5/fs/jbd2/journal.c 2007-09-13 14:00:17.000000000 -0700
@@ -84,7 +84,6 @@ EXPORT_SYMBOL(jbd2_journal_force_commit)

static int journal_convert_superblock_v1(journal_t *, journal_superblock_t *);
static void __journal_abort_soft (journal_t *journal, int errno);
-static int jbd2_journal_create_jbd_slab(size_t slab_size);

/*
* Helper function used to manage commit timeouts
@@ -335,10 +334,10 @@ repeat:
char *tmp;

jbd_unlock_bh_state(bh_in);
- tmp = jbd2_slab_alloc(bh_in->b_size, GFP_NOFS);
+ tmp = jbd2_alloc(bh_in->b_size, GFP_NOFS);
jbd_lock_bh_state(bh_in);
if (jh_in->b_frozen_data) {
- jbd2_slab_free(tmp, bh_in->b_size);
+ jbd2_free(tmp, bh_in->b_size);
goto repeat;
}

@@ -655,7 +654,7 @@ static journal_t * journal_init_common (
journal_t *journal;
int err;

- journal = jbd_kmalloc(sizeof(*journal), GFP_KERNEL);
+ journal = jbd2_kmalloc(sizeof(*journal), GFP_KERNEL);
if (!journal)
goto fail;
memset(journal, 0, sizeof(*journal));
@@ -680,7 +679,7 @@ static journal_t * journal_init_common (
/* Set up a default-sized revoke table for the new mount. */
err = jbd2_journal_init_revoke(journal, JOURNAL_REVOKE_DEFAULT_HASH);
if (err) {
- kfree(journal);
+ jbd2_kfree(journal);
goto fail;
}
return journal;
@@ -729,7 +728,7 @@ journal_t * jbd2_journal_init_dev(struct
if (!journal->j_wbuf) {
printk(KERN_ERR "%s: Cant allocate bhs for commit thread\n",
__FUNCTION__);
- kfree(journal);
+ jbd2_kfree(journal);
journal = NULL;
goto out;
}
@@ -783,7 +782,7 @@ journal_t * jbd2_journal_init_inode (str
if (!journal->j_wbuf) {
printk(KERN_ERR "%s: Cant allocate bhs for commit thread\n",
__FUNCTION__);
- kfree(journal);
+ jbd2_kfree(journal);
return NULL;
}

@@ -792,7 +791,7 @@ journal_t * jbd2_journal_init_inode (str
if (err) {
printk(KERN_ERR "%s: Cannnot locate journal superblock\n",
__FUNCTION__);
- kfree(journal);
+ jbd2_kfree(journal);
return NULL;
}

@@ -1096,13 +1095,6 @@ int jbd2_journal_load(journal_t *journal
}
}

- /*
- * Create a slab for this blocksize
- */
- err = jbd2_journal_create_jbd_slab(be32_to_cpu(sb->s_blocksize));
- if (err)
- return err;
-
/* Let the recovery code check whether it needs to recover any
* data from the journal. */
if (jbd2_journal_recover(journal))
@@ -1167,7 +1159,7 @@ void jbd2_journal_destroy(journal_t *jou
if (journal->j_revoke)
jbd2_journal_destroy_revoke(journal);
kfree(journal->j_wbuf);
- kfree(journal);
+ jbd2_kfree(journal);
}


@@ -1627,86 +1619,6 @@ size_t journal_tag_bytes(journal_t *jour
}

/*
- * Simple support for retrying memory allocations. Introduced to help to
- * debug different VM deadlock avoidance strategies.
- */
-void * __jbd2_kmalloc (const char *where, size_t size, gfp_t flags, int retry)
-{
- return kmalloc(size, flags | (retry ? __GFP_NOFAIL : 0));
-}
-
-/*
- * jbd slab management: create 1k, 2k, 4k, 8k slabs as needed
- * and allocate frozen and commit buffers from these slabs.
- *
- * Reason for doing this is to avoid, SLAB_DEBUG - since it could
- * cause bh to cross page boundary.
- */
-
-#define JBD_MAX_SLABS 5
-#define JBD_SLAB_INDEX(size) (size >> 11)
-
-static struct kmem_cache *jbd_slab[JBD_MAX_SLABS];
-static const char *jbd_slab_names[JBD_MAX_SLABS] = {
- "jbd2_1k", "jbd2_2k", "jbd2_4k", NULL, "jbd2_8k"
-};
-
-static void jbd2_journal_destroy_jbd_slabs(void)
-{
- int i;
-
- for (i = 0; i < JBD_MAX_SLABS; i++) {
- if (jbd_slab[i])
- kmem_cache_destroy(jbd_slab[i]);
- jbd_slab[i] = NULL;
- }
-}
-
-static int jbd2_journal_create_jbd_slab(size_t slab_size)
-{
- int i = JBD_SLAB_INDEX(slab_size);
-
- BUG_ON(i >= JBD_MAX_SLABS);
-
- /*
- * Check if we already have a slab created for this size
- */
- if (jbd_slab[i])
- return 0;
-
- /*
- * Create a slab and force alignment to be same as slabsize -
- * this will make sure that allocations won't cross the page
- * boundary.
- */
- jbd_slab[i] = kmem_cache_create(jbd_slab_names[i],
- slab_size, slab_size, 0, NULL);
- if (!jbd_slab[i]) {
- printk(KERN_EMERG "JBD: no memory for jbd_slab cache\n");
- return -ENOMEM;
- }
- return 0;
-}
-
-void * jbd2_slab_alloc(size_t size, gfp_t flags)
-{
- int idx;
-
- idx = JBD_SLAB_INDEX(size);
- BUG_ON(jbd_slab[idx] == NULL);
- return kmem_cache_alloc(jbd_slab[idx], flags | __GFP_NOFAIL);
-}
-
-void jbd2_slab_free(void *ptr, size_t size)
-{
- int idx;
-
- idx = JBD_SLAB_INDEX(size);
- BUG_ON(jbd_slab[idx] == NULL);
- kmem_cache_free(jbd_slab[idx], ptr);
-}
-
-/*
* Journal_head storage management
*/
static struct kmem_cache *jbd2_journal_head_cache;
@@ -1893,13 +1805,13 @@ static void __journal_remove_journal_hea
printk(KERN_WARNING "%s: freeing "
"b_frozen_data\n",
__FUNCTION__);
- jbd2_slab_free(jh->b_frozen_data, bh->b_size);
+ jbd2_free(jh->b_frozen_data, bh->b_size);
}
if (jh->b_committed_data) {
printk(KERN_WARNING "%s: freeing "
"b_committed_data\n",
__FUNCTION__);
- jbd2_slab_free(jh->b_committed_data, bh->b_size);
+ jbd2_free(jh->b_committed_data, bh->b_size);
}
bh->b_private = NULL;
jh->b_bh = NULL; /* debug, really */
@@ -2040,7 +1952,6 @@ static void jbd2_journal_destroy_caches(
jbd2_journal_destroy_revoke_caches();
jbd2_journal_destroy_jbd2_journal_head_cache();
jbd2_journal_destroy_handle_cache();
- jbd2_journal_destroy_jbd_slabs();
}

static int __init journal_init(void)
Index: linux-2.6.23-rc5/fs/jbd/commit.c
===================================================================
--- linux-2.6.23-rc5.orig/fs/jbd/commit.c 2007-09-13 13:37:57.000000000 -0700
+++ linux-2.6.23-rc5/fs/jbd/commit.c 2007-09-13 13:40:03.000000000 -0700
@@ -375,7 +375,7 @@ void journal_commit_transaction(journal_
struct buffer_head *bh = jh2bh(jh);

jbd_lock_bh_state(bh);
- jbd_slab_free(jh->b_committed_data, bh->b_size);
+ jbd_free(jh->b_committed_data, bh->b_size);
jh->b_committed_data = NULL;
jbd_unlock_bh_state(bh);
}
@@ -792,14 +792,14 @@ restart_loop:
* Otherwise, we can just throw away the frozen data now.
*/
if (jh->b_committed_data) {
- jbd_slab_free(jh->b_committed_data, bh->b_size);
+ jbd_free(jh->b_committed_data, bh->b_size);
jh->b_committed_data = NULL;
if (jh->b_frozen_data) {
jh->b_committed_data = jh->b_frozen_data;
jh->b_frozen_data = NULL;
}
} else if (jh->b_frozen_data) {
- jbd_slab_free(jh->b_frozen_data, bh->b_size);
+ jbd_free(jh->b_frozen_data, bh->b_size);
jh->b_frozen_data = NULL;
}

Index: linux-2.6.23-rc5/fs/jbd2/commit.c
===================================================================
--- linux-2.6.23-rc5.orig/fs/jbd2/commit.c 2007-09-13 13:37:57.000000000 -0700
+++ linux-2.6.23-rc5/fs/jbd2/commit.c 2007-09-13 13:40:03.000000000 -0700
@@ -384,7 +384,7 @@ void jbd2_journal_commit_transaction(jou
struct buffer_head *bh = jh2bh(jh);

jbd_lock_bh_state(bh);
- jbd2_slab_free(jh->b_committed_data, bh->b_size);
+ jbd2_free(jh->b_committed_data, bh->b_size);
jh->b_committed_data = NULL;
jbd_unlock_bh_state(bh);
}
@@ -801,14 +801,14 @@ restart_loop:
* Otherwise, we can just throw away the frozen data now.
*/
if (jh->b_committed_data) {
- jbd2_slab_free(jh->b_committed_data, bh->b_size);
+ jbd2_free(jh->b_committed_data, bh->b_size);
jh->b_committed_data = NULL;
if (jh->b_frozen_data) {
jh->b_committed_data = jh->b_frozen_data;
jh->b_frozen_data = NULL;
}
} else if (jh->b_frozen_data) {
- jbd2_slab_free(jh->b_frozen_data, bh->b_size);
+ jbd2_free(jh->b_frozen_data, bh->b_size);
jh->b_frozen_data = NULL;
}

Index: linux-2.6.23-rc5/fs/jbd/transaction.c
===================================================================
--- linux-2.6.23-rc5.orig/fs/jbd/transaction.c 2007-09-13 13:37:57.000000000 -0700
+++ linux-2.6.23-rc5/fs/jbd/transaction.c 2007-09-13 13:46:23.000000000 -0700
@@ -229,7 +229,7 @@ repeat_locked:
spin_unlock(&journal->j_state_lock);
out:
if (unlikely(new_transaction)) /* It's usually NULL */
- kfree(new_transaction);
+ jbd_kfree(new_transaction);
return ret;
}

@@ -668,7 +668,7 @@ repeat:
JBUFFER_TRACE(jh, "allocate memory for buffer");
jbd_unlock_bh_state(bh);
frozen_buffer =
- jbd_slab_alloc(jh2bh(jh)->b_size,
+ jbd_alloc(jh2bh(jh)->b_size,
GFP_NOFS);
if (!frozen_buffer) {
printk(KERN_EMERG
@@ -728,7 +728,7 @@ done:

out:
if (unlikely(frozen_buffer)) /* It's usually NULL */
- jbd_slab_free(frozen_buffer, bh->b_size);
+ jbd_free(frozen_buffer, bh->b_size);

JBUFFER_TRACE(jh, "exit");
return error;
@@ -881,7 +881,7 @@ int journal_get_undo_access(handle_t *ha

repeat:
if (!jh->b_committed_data) {
- committed_data = jbd_slab_alloc(jh2bh(jh)->b_size, GFP_NOFS);
+ committed_data = jbd_alloc(jh2bh(jh)->b_size, GFP_NOFS);
if (!committed_data) {
printk(KERN_EMERG "%s: No memory for committed data\n",
__FUNCTION__);
@@ -908,7 +908,7 @@ repeat:
out:
journal_put_journal_head(jh);
if (unlikely(committed_data))
- jbd_slab_free(committed_data, bh->b_size);
+ jbd_free(committed_data, bh->b_size);
return err;
}

Index: linux-2.6.23-rc5/fs/jbd2/transaction.c
===================================================================
--- linux-2.6.23-rc5.orig/fs/jbd2/transaction.c 2007-09-13 13:37:57.000000000 -0700
+++ linux-2.6.23-rc5/fs/jbd2/transaction.c 2007-09-13 13:59:20.000000000 -0700
@@ -96,7 +96,7 @@ static int start_this_handle(journal_t *

alloc_transaction:
if (!journal->j_running_transaction) {
- new_transaction = jbd_kmalloc(sizeof(*new_transaction),
+ new_transaction = jbd2_kmalloc(sizeof(*new_transaction),
GFP_NOFS);
if (!new_transaction) {
ret = -ENOMEM;
@@ -229,14 +229,14 @@ repeat_locked:
spin_unlock(&journal->j_state_lock);
out:
if (unlikely(new_transaction)) /* It's usually NULL */
- kfree(new_transaction);
+ jbd2_kfree(new_transaction);
return ret;
}

/* Allocate a new handle. This should probably be in a slab... */
static handle_t *new_handle(int nblocks)
{
- handle_t *handle = jbd_alloc_handle(GFP_NOFS);
+ handle_t *handle = jbd2_alloc_handle(GFP_NOFS);
if (!handle)
return NULL;
memset(handle, 0, sizeof(*handle));
@@ -282,7 +282,7 @@ handle_t *jbd2_journal_start(journal_t *

err = start_this_handle(journal, handle);
if (err < 0) {
- jbd_free_handle(handle);
+ jbd2_free_handle(handle);
current->journal_info = NULL;
handle = ERR_PTR(err);
}
@@ -668,7 +668,7 @@ repeat:
JBUFFER_TRACE(jh, "allocate memory for buffer");
jbd_unlock_bh_state(bh);
frozen_buffer =
- jbd2_slab_alloc(jh2bh(jh)->b_size,
+ jbd2_alloc(jh2bh(jh)->b_size,
GFP_NOFS);
if (!frozen_buffer) {
printk(KERN_EMERG
@@ -728,7 +728,7 @@ done:

out:
if (unlikely(frozen_buffer)) /* It's usually NULL */
- jbd2_slab_free(frozen_buffer, bh->b_size);
+ jbd2_free(frozen_buffer, bh->b_size);

JBUFFER_TRACE(jh, "exit");
return error;
@@ -881,7 +881,7 @@ int jbd2_journal_get_undo_access(handle_

repeat:
if (!jh->b_committed_data) {
- committed_data = jbd2_slab_alloc(jh2bh(jh)->b_size, GFP_NOFS);
+ committed_data = jbd2_alloc(jh2bh(jh)->b_size, GFP_NOFS);
if (!committed_data) {
printk(KERN_EMERG "%s: No memory for committed data\n",
__FUNCTION__);
@@ -908,7 +908,7 @@ repeat:
out:
jbd2_journal_put_journal_head(jh);
if (unlikely(committed_data))
- jbd2_slab_free(committed_data, bh->b_size);
+ jbd2_free(committed_data, bh->b_size);
return err;
}

@@ -1411,7 +1411,7 @@ int jbd2_journal_stop(handle_t *handle)
spin_unlock(&journal->j_state_lock);
}

- jbd_free_handle(handle);
+ jbd2_free_handle(handle);
return err;
}

Index: linux-2.6.23-rc5/fs/jbd/checkpoint.c
===================================================================
--- linux-2.6.23-rc5.orig/fs/jbd/checkpoint.c 2007-09-13 13:37:57.000000000 -0700
+++ linux-2.6.23-rc5/fs/jbd/checkpoint.c 2007-09-14 09:57:21.000000000 -0700
@@ -693,5 +693,5 @@ void __journal_drop_transaction(journal_
J_ASSERT(journal->j_running_transaction != transaction);

jbd_debug(1, "Dropping transaction %d, all done\n", transaction->t_tid);
- kfree(transaction);
+ jbd_kfree(transaction);
}
Index: linux-2.6.23-rc5/fs/jbd2/checkpoint.c
===================================================================
--- linux-2.6.23-rc5.orig/fs/jbd2/checkpoint.c 2007-09-13 13:37:57.000000000 -0700
+++ linux-2.6.23-rc5/fs/jbd2/checkpoint.c 2007-09-14 09:57:03.000000000 -0700
@@ -693,5 +693,5 @@ void __jbd2_journal_drop_transaction(jou
J_ASSERT(journal->j_running_transaction != transaction);

jbd_debug(1, "Dropping transaction %d, all done\n", transaction->t_tid);
- kfree(transaction);
+ jbd2_kfree(transaction);
}


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