The following ext4 patches are planned for submission to Linus once
the merge window for 2.6.24-rc1 is opened.
- Ted
From: Aneesh Kumar K.V <[email protected]>
Signed-off-by: Mingming Cao <[email protected]>
Signed-off-by: "Theodore Ts'o" <[email protected]>
---
fs/jbd/journal.c | 2 +-
fs/jbd2/journal.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/fs/jbd/journal.c b/fs/jbd/journal.c
index ae2c25d..8d6d475 100644
--- a/fs/jbd/journal.c
+++ b/fs/jbd/journal.c
@@ -653,7 +653,7 @@ static journal_t * journal_init_common (void)
journal_t *journal;
int err;
- journal = kmalloc(sizeof(*journal), GFP_KERNEL|__GFP_NOFAIL);
+ journal = kmalloc(sizeof(*journal), GFP_KERNEL);
if (!journal)
goto fail;
memset(journal, 0, sizeof(*journal));
diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c
index 4281244..0e329a3 100644
--- a/fs/jbd2/journal.c
+++ b/fs/jbd2/journal.c
@@ -654,7 +654,7 @@ static journal_t * journal_init_common (void)
journal_t *journal;
int err;
- journal = kmalloc(sizeof(*journal), GFP_KERNEL|__GFP_NOFAIL);
+ journal = kmalloc(sizeof(*journal), GFP_KERNEL);
if (!journal)
goto fail;
memset(journal, 0, sizeof(*journal));
--
1.5.3.2.81.g17ed
From: Mingming Cao <[email protected]>
Convert kmalloc to kzalloc() and get rid of the memset().
Signed-off-by: Mingming Cao <[email protected]>
---
fs/ext4/xattr.c | 3 +--
fs/jbd2/journal.c | 3 +--
fs/jbd2/transaction.c | 3 +--
3 files changed, 3 insertions(+), 6 deletions(-)
diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c
index b10d68f..12c7d65 100644
--- a/fs/ext4/xattr.c
+++ b/fs/ext4/xattr.c
@@ -750,12 +750,11 @@ ext4_xattr_block_set(handle_t *handle, struct inode *inode,
}
} else {
/* Allocate a buffer where we construct the new block. */
- s->base = kmalloc(sb->s_blocksize, GFP_KERNEL);
+ s->base = kzalloc(sb->s_blocksize, GFP_KERNEL);
/* assert(header == s->base) */
error = -ENOMEM;
if (s->base == NULL)
goto cleanup;
- memset(s->base, 0, sb->s_blocksize);
header(s->base)->h_magic = cpu_to_le32(EXT4_XATTR_MAGIC);
header(s->base)->h_blocks = cpu_to_le32(1);
header(s->base)->h_refcount = cpu_to_le32(1);
diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c
index 0e329a3..f12c65b 100644
--- a/fs/jbd2/journal.c
+++ b/fs/jbd2/journal.c
@@ -654,10 +654,9 @@ static journal_t * journal_init_common (void)
journal_t *journal;
int err;
- journal = kmalloc(sizeof(*journal), GFP_KERNEL);
+ journal = kzalloc(sizeof(*journal), GFP_KERNEL|__GFP_NOFAIL);
if (!journal)
goto fail;
- memset(journal, 0, sizeof(*journal));
init_waitqueue_head(&journal->j_wait_transaction_locked);
init_waitqueue_head(&journal->j_wait_logspace);
diff --git a/fs/jbd2/transaction.c b/fs/jbd2/transaction.c
index a5fb70f..b1fcf2b 100644
--- a/fs/jbd2/transaction.c
+++ b/fs/jbd2/transaction.c
@@ -96,13 +96,12 @@ static int start_this_handle(journal_t *journal, handle_t *handle)
alloc_transaction:
if (!journal->j_running_transaction) {
- new_transaction = kmalloc(sizeof(*new_transaction),
+ new_transaction = kzalloc(sizeof(*new_transaction),
GFP_NOFS|__GFP_NOFAIL);
if (!new_transaction) {
ret = -ENOMEM;
goto out;
}
- memset(new_transaction, 0, sizeof(*new_transaction));
}
jbd_debug(3, "New handle %p going live.\n", handle);
--
1.5.3.2.81.g17ed
From: Mingming Cao <[email protected]>
JBD: Replace slab allocations with page cache allocations
JBD allocate memory for committed_data and frozen_data from slab. However
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.
Also this patch cleans up jbd_kmalloc and replace it with kmalloc directly
Signed-off-by: Christoph Lameter <[email protected]>
Signed-off-by: Mingming Cao <[email protected]>
---
fs/jbd/commit.c | 6 +-
fs/jbd/journal.c | 99 ++----------------------------------------------
fs/jbd/transaction.c | 12 +++---
fs/jbd2/commit.c | 6 +-
fs/jbd2/journal.c | 99 ++----------------------------------------------
fs/jbd2/transaction.c | 18 ++++----
include/linux/jbd.h | 18 +++++----
include/linux/jbd2.h | 19 +++++----
8 files changed, 51 insertions(+), 226 deletions(-)
diff --git a/fs/jbd/commit.c b/fs/jbd/commit.c
index a003d50..a263d82 100644
--- a/fs/jbd/commit.c
+++ b/fs/jbd/commit.c
@@ -375,7 +375,7 @@ void journal_commit_transaction(journal_t *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;
}
diff --git a/fs/jbd/journal.c b/fs/jbd/journal.c
index 06ab3c1..ae2c25d 100644
--- a/fs/jbd/journal.c
+++ b/fs/jbd/journal.c
@@ -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;
}
@@ -654,7 +653,7 @@ static journal_t * journal_init_common (void)
journal_t *journal;
int err;
- journal = jbd_kmalloc(sizeof(*journal), GFP_KERNEL);
+ journal = kmalloc(sizeof(*journal), GFP_KERNEL|__GFP_NOFAIL);
if (!journal)
goto fail;
memset(journal, 0, sizeof(*journal));
@@ -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))
@@ -1615,86 +1607,6 @@ int journal_blocks_per_page(struct inode *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_head(struct buffer_head *bh)
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)
diff --git a/fs/jbd/transaction.c b/fs/jbd/transaction.c
index 772b653..11d846c 100644
--- a/fs/jbd/transaction.c
+++ b/fs/jbd/transaction.c
@@ -96,8 +96,8 @@ static int start_this_handle(journal_t *journal, handle_t *handle)
alloc_transaction:
if (!journal->j_running_transaction) {
- new_transaction = jbd_kmalloc(sizeof(*new_transaction),
- GFP_NOFS);
+ new_transaction = kmalloc(sizeof(*new_transaction),
+ GFP_NOFS|__GFP_NOFAIL);
if (!new_transaction) {
ret = -ENOMEM;
goto out;
@@ -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 *handle, struct buffer_head *bh)
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;
}
diff --git a/fs/jbd2/commit.c b/fs/jbd2/commit.c
index c0f59d1..2cac34a 100644
--- a/fs/jbd2/commit.c
+++ b/fs/jbd2/commit.c
@@ -384,7 +384,7 @@ void jbd2_journal_commit_transaction(journal_t *journal)
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;
}
diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c
index f37324a..4281244 100644
--- a/fs/jbd2/journal.c
+++ b/fs/jbd2/journal.c
@@ -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 (void)
journal_t *journal;
int err;
- journal = jbd_kmalloc(sizeof(*journal), GFP_KERNEL);
+ journal = kmalloc(sizeof(*journal), GFP_KERNEL|__GFP_NOFAIL);
if (!journal)
goto fail;
memset(journal, 0, sizeof(*journal));
@@ -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))
@@ -1627,86 +1619,6 @@ size_t journal_tag_bytes(journal_t *journal)
}
/*
- * 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_head(struct buffer_head *bh)
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(void)
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)
diff --git a/fs/jbd2/transaction.c b/fs/jbd2/transaction.c
index 7946ff4..a5fb70f 100644
--- a/fs/jbd2/transaction.c
+++ b/fs/jbd2/transaction.c
@@ -96,8 +96,8 @@ static int start_this_handle(journal_t *journal, handle_t *handle)
alloc_transaction:
if (!journal->j_running_transaction) {
- new_transaction = jbd_kmalloc(sizeof(*new_transaction),
- GFP_NOFS);
+ new_transaction = kmalloc(sizeof(*new_transaction),
+ GFP_NOFS|__GFP_NOFAIL);
if (!new_transaction) {
ret = -ENOMEM;
goto out;
@@ -236,7 +236,7 @@ out:
/* 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 *journal, int nblocks)
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_t *handle, struct buffer_head *bh)
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;
}
diff --git a/include/linux/jbd.h b/include/linux/jbd.h
index 4527375..26216c1 100644
--- a/include/linux/jbd.h
+++ b/include/linux/jbd.h
@@ -71,14 +71,16 @@ 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);
-
-#define jbd_kmalloc(size, flags) \
- __jbd_kmalloc(__FUNCTION__, (size), (flags), journal_oom_retry)
-#define jbd_rep_kmalloc(size, flags) \
- __jbd_kmalloc(__FUNCTION__, (size), (flags), 1)
+
+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 JFS_MIN_JOURNAL_BLOCKS 1024
diff --git a/include/linux/jbd2.h b/include/linux/jbd2.h
index 260d6d7..5f8b876 100644
--- a/include/linux/jbd2.h
+++ b/include/linux/jbd2.h
@@ -71,14 +71,15 @@ 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_alloc(size_t size, gfp_t flags)
+{
+ return (void *)__get_free_pages(flags, get_order(size));
+}
-#define jbd_kmalloc(size, flags) \
- __jbd2_kmalloc(__FUNCTION__, (size), (flags), journal_oom_retry)
-#define jbd_rep_kmalloc(size, flags) \
- __jbd2_kmalloc(__FUNCTION__, (size), (flags), 1)
+static inline void jbd2_free(void *ptr, size_t size)
+{
+ free_pages((unsigned long)ptr, get_order(size));
+};
#define JBD2_MIN_JOURNAL_BLOCKS 1024
@@ -959,12 +960,12 @@ void jbd2_journal_put_journal_head(struct journal_head *jh);
*/
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);
}
--
1.5.3.2.81.g17ed
On Thu, Oct 04, 2007 at 01:50:36AM -0400, Theodore Ts'o wrote:
> From: Mingming Cao <[email protected]>
>
> JBD: Replace slab allocations with page cache allocations
It's page allocations, not page cache allocations.
> Also this patch cleans up jbd_kmalloc and replace it with kmalloc directly
That sounds like it should be a different patch..
On Thu, 2007-10-04 at 07:52 +0100, Christoph Hellwig wrote:
> On Thu, Oct 04, 2007 at 01:50:36AM -0400, Theodore Ts'o wrote:
> > From: Mingming Cao <[email protected]>
> >
> > JBD: Replace slab allocations with page cache allocations
>
> It's page allocations, not page cache allocations.
>
> > Also this patch cleans up jbd_kmalloc and replace it with kmalloc directly
>
> That sounds like it should be a different patch..
Okay. Will sent the patches, that also separate JBD2 changes to a
different patch.
JBD: JBD slab allocation cleanups
From: Mingming Cao <[email protected]>
JBD: Replace slab allocations with page allocations
JBD allocate memory for committed_data and frozen_data from slab. However
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.
Signed-off-by: Christoph Lameter <[email protected]>
Signed-off-by: Mingming Cao <[email protected]>
---
fs/jbd/commit.c | 6 +--
fs/jbd/journal.c | 88 ++-------------------------------------------------
fs/jbd/transaction.c | 8 ++--
include/linux/jbd.h | 13 +++++--
4 files changed, 21 insertions(+), 94 deletions(-)
Index: linux-2.6.23-rc9/fs/jbd/commit.c
===================================================================
--- linux-2.6.23-rc9.orig/fs/jbd/commit.c 2007-10-05 12:03:43.000000000 -0700
+++ linux-2.6.23-rc9/fs/jbd/commit.c 2007-10-05 12:08:08.000000000 -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-rc9/fs/jbd/journal.c
===================================================================
--- linux-2.6.23-rc9.orig/fs/jbd/journal.c 2007-10-05 12:03:43.000000000 -0700
+++ linux-2.6.23-rc9/fs/jbd/journal.c 2007-10-05 12:08:08.000000000 -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;
}
@@ -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))
@@ -1624,77 +1616,6 @@ void * __jbd_kmalloc (const char *where,
}
/*
- * 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 +1802,13 @@ 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 +1963,6 @@ 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-rc9/fs/jbd/transaction.c
===================================================================
--- linux-2.6.23-rc9.orig/fs/jbd/transaction.c 2007-10-05 12:03:43.000000000 -0700
+++ linux-2.6.23-rc9/fs/jbd/transaction.c 2007-10-05 12:08:08.000000000 -0700
@@ -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-rc9/include/linux/jbd.h
===================================================================
--- linux-2.6.23-rc9.orig/include/linux/jbd.h 2007-10-05 12:03:43.000000000 -0700
+++ linux-2.6.23-rc9/include/linux/jbd.h 2007-10-05 12:08:08.000000000 -0700
@@ -72,14 +72,21 @@ extern int journal_enable_debug;
#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);
-
#define jbd_kmalloc(size, flags) \
__jbd_kmalloc(__FUNCTION__, (size), (flags), journal_oom_retry)
#define jbd_rep_kmalloc(size, flags) \
__jbd_kmalloc(__FUNCTION__, (size), (flags), 1)
+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 JFS_MIN_JOURNAL_BLOCKS 1024
#ifdef __KERNEL__
JBD2: jbd2 slab allocation cleanups
From: Mingming Cao <[email protected]>
JBD2: Replace slab allocations with page allocations
JBD2 allocate memory for committed_data and frozen_data from slab. However
JBD2 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.
Signed-off-by: Christoph Lameter <[email protected]>
Signed-off-by: Mingming Cao <[email protected]>
---
fs/jbd2/commit.c | 6 +--
fs/jbd2/journal.c | 88 ++------------------------------------------------
fs/jbd2/transaction.c | 14 +++----
include/linux/jbd2.h | 18 +++++++---
4 files changed, 27 insertions(+), 99 deletions(-)
Index: linux-2.6.23-rc9/fs/jbd2/commit.c
===================================================================
--- linux-2.6.23-rc9.orig/fs/jbd2/commit.c 2007-10-05 12:03:43.000000000 -0700
+++ linux-2.6.23-rc9/fs/jbd2/commit.c 2007-10-05 12:08:26.000000000 -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-rc9/fs/jbd2/journal.c
===================================================================
--- linux-2.6.23-rc9.orig/fs/jbd2/journal.c 2007-10-05 12:03:43.000000000 -0700
+++ linux-2.6.23-rc9/fs/jbd2/journal.c 2007-10-05 12:08:26.000000000 -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;
}
@@ -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))
@@ -1636,77 +1628,6 @@ void * __jbd2_kmalloc (const char *where
}
/*
- * 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 +1814,13 @@ 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 +1961,6 @@ 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-rc9/fs/jbd2/transaction.c
===================================================================
--- linux-2.6.23-rc9.orig/fs/jbd2/transaction.c 2007-10-05 12:03:43.000000000 -0700
+++ linux-2.6.23-rc9/fs/jbd2/transaction.c 2007-10-05 12:08:26.000000000 -0700
@@ -236,7 +236,7 @@ out:
/* 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-rc9/include/linux/jbd2.h
===================================================================
--- linux-2.6.23-rc9.orig/include/linux/jbd2.h 2007-10-05 12:03:43.000000000 -0700
+++ linux-2.6.23-rc9/include/linux/jbd2.h 2007-10-05 12:08:26.000000000 -0700
@@ -72,14 +72,22 @@ extern u8 jbd2_journal_enable_debug;
#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);
-
#define jbd_kmalloc(size, flags) \
__jbd2_kmalloc(__FUNCTION__, (size), (flags), journal_oom_retry)
#define jbd_rep_kmalloc(size, flags) \
__jbd2_kmalloc(__FUNCTION__, (size), (flags), 1)
+
+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 JBD2_MIN_JOURNAL_BLOCKS 1024
#ifdef __KERNEL__
@@ -959,12 +967,12 @@ 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);
}
JBD: JBD replace jbd_kmalloc with kmalloc
From: Mingming Cao <[email protected]>
This patch cleans up jbd_kmalloc and replace it with kmalloc directly
Signed-off-by: Mingming Cao <[email protected]>
---
fs/jbd/journal.c | 11 +----------
fs/jbd/transaction.c | 4 ++--
include/linux/jbd.h | 6 ------
3 files changed, 3 insertions(+), 18 deletions(-)
Index: linux-2.6.23-rc9/fs/jbd/journal.c
===================================================================
--- linux-2.6.23-rc9.orig/fs/jbd/journal.c 2007-10-05 12:08:08.000000000 -0700
+++ linux-2.6.23-rc9/fs/jbd/journal.c 2007-10-05 12:08:29.000000000 -0700
@@ -653,7 +653,7 @@ static journal_t * journal_init_common (
journal_t *journal;
int err;
- journal = jbd_kmalloc(sizeof(*journal), GFP_KERNEL);
+ journal = kmalloc(sizeof(*journal), GFP_KERNEL);
if (!journal)
goto fail;
memset(journal, 0, sizeof(*journal));
@@ -1607,15 +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));
-}
-
-/*
* Journal_head storage management
*/
static struct kmem_cache *journal_head_cache;
Index: linux-2.6.23-rc9/fs/jbd/transaction.c
===================================================================
--- linux-2.6.23-rc9.orig/fs/jbd/transaction.c 2007-10-05 12:08:08.000000000 -0700
+++ linux-2.6.23-rc9/fs/jbd/transaction.c 2007-10-05 12:08:29.000000000 -0700
@@ -96,8 +96,8 @@ static int start_this_handle(journal_t *
alloc_transaction:
if (!journal->j_running_transaction) {
- new_transaction = jbd_kmalloc(sizeof(*new_transaction),
- GFP_NOFS);
+ new_transaction = kmalloc(sizeof(*new_transaction),
+ GFP_NOFS|__GFP_NOFAIL);
if (!new_transaction) {
ret = -ENOMEM;
goto out;
Index: linux-2.6.23-rc9/include/linux/jbd.h
===================================================================
--- linux-2.6.23-rc9.orig/include/linux/jbd.h 2007-10-05 12:08:08.000000000 -0700
+++ linux-2.6.23-rc9/include/linux/jbd.h 2007-10-05 12:08:29.000000000 -0700
@@ -71,12 +71,6 @@ 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);
-#define jbd_kmalloc(size, flags) \
- __jbd_kmalloc(__FUNCTION__, (size), (flags), journal_oom_retry)
-#define jbd_rep_kmalloc(size, flags) \
- __jbd_kmalloc(__FUNCTION__, (size), (flags), 1)
-
static inline void *jbd_alloc(size_t size, gfp_t flags)
{
return (void *)__get_free_pages(flags, get_order(size));
JBD2: JBD2 replace jbd2_kmalloc with kmalloc
From: Mingming Cao <[email protected]>
This patch cleans up jbd_kmalloc and replace it with kmalloc directly
Signed-off-by: Mingming Cao <[email protected]>
---
fs/jbd2/journal.c | 11 +----------
fs/jbd2/transaction.c | 4 ++--
include/linux/jbd2.h | 7 -------
3 files changed, 3 insertions(+), 19 deletions(-)
Index: linux-2.6.23-rc9/fs/jbd2/journal.c
===================================================================
--- linux-2.6.23-rc9.orig/fs/jbd2/journal.c 2007-10-05 12:08:26.000000000 -0700
+++ linux-2.6.23-rc9/fs/jbd2/journal.c 2007-10-05 12:08:32.000000000 -0700
@@ -654,7 +654,7 @@ static journal_t * journal_init_common (
journal_t *journal;
int err;
- journal = jbd_kmalloc(sizeof(*journal), GFP_KERNEL);
+ journal = kmalloc(sizeof(*journal), GFP_KERNEL);
if (!journal)
goto fail;
memset(journal, 0, sizeof(*journal));
@@ -1619,15 +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));
-}
-
-/*
* Journal_head storage management
*/
static struct kmem_cache *jbd2_journal_head_cache;
Index: linux-2.6.23-rc9/fs/jbd2/transaction.c
===================================================================
--- linux-2.6.23-rc9.orig/fs/jbd2/transaction.c 2007-10-05 12:08:26.000000000 -0700
+++ linux-2.6.23-rc9/fs/jbd2/transaction.c 2007-10-05 12:08:32.000000000 -0700
@@ -96,8 +96,8 @@ static int start_this_handle(journal_t *
alloc_transaction:
if (!journal->j_running_transaction) {
- new_transaction = jbd_kmalloc(sizeof(*new_transaction),
- GFP_NOFS);
+ new_transaction = kmalloc(sizeof(*new_transaction),
+ GFP_NOFS|__GFP_NOFAIL);
if (!new_transaction) {
ret = -ENOMEM;
goto out;
Index: linux-2.6.23-rc9/include/linux/jbd2.h
===================================================================
--- linux-2.6.23-rc9.orig/include/linux/jbd2.h 2007-10-05 12:08:26.000000000 -0700
+++ linux-2.6.23-rc9/include/linux/jbd2.h 2007-10-05 12:08:32.000000000 -0700
@@ -71,13 +71,6 @@ 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);
-#define jbd_kmalloc(size, flags) \
- __jbd2_kmalloc(__FUNCTION__, (size), (flags), journal_oom_retry)
-#define jbd_rep_kmalloc(size, flags) \
- __jbd2_kmalloc(__FUNCTION__, (size), (flags), 1)
-
-
static inline void *jbd2_alloc(size_t size, gfp_t flags)
{
return (void *)__get_free_pages(flags, get_order(size));
On Fri, 5 Oct 2007, Mingming Cao wrote:
> Index: linux-2.6.23-rc9/fs/jbd/transaction.c
> ===================================================================
> --- linux-2.6.23-rc9.orig/fs/jbd/transaction.c 2007-10-05 12:08:08.000000000 -0700
> +++ linux-2.6.23-rc9/fs/jbd/transaction.c 2007-10-05 12:08:29.000000000 -0700
> @@ -96,8 +96,8 @@ static int start_this_handle(journal_t *
>
> alloc_transaction:
> if (!journal->j_running_transaction) {
> - new_transaction = jbd_kmalloc(sizeof(*new_transaction),
> - GFP_NOFS);
> + new_transaction = kmalloc(sizeof(*new_transaction),
> + GFP_NOFS|__GFP_NOFAIL);
Why was a __GFP_NOFAIL added here? I do not see a use of jbd_rep_kmalloc?
> -#define jbd_kmalloc(size, flags) \
> - __jbd_kmalloc(__FUNCTION__, (size), (flags), journal_oom_retry)
journal_oom_retry is no longer used?
On Mon, 2007-10-08 at 10:46 -0700, Christoph Lameter wrote:
> On Fri, 5 Oct 2007, Mingming Cao wrote:
>
> > Index: linux-2.6.23-rc9/fs/jbd/transaction.c
> > ===================================================================
> > --- linux-2.6.23-rc9.orig/fs/jbd/transaction.c 2007-10-05 12:08:08.000000000 -0700
> > +++ linux-2.6.23-rc9/fs/jbd/transaction.c 2007-10-05 12:08:29.000000000 -0700
> > @@ -96,8 +96,8 @@ static int start_this_handle(journal_t *
> >
> > alloc_transaction:
> > if (!journal->j_running_transaction) {
> > - new_transaction = jbd_kmalloc(sizeof(*new_transaction),
> > - GFP_NOFS);
> > + new_transaction = kmalloc(sizeof(*new_transaction),
> > + GFP_NOFS|__GFP_NOFAIL);
>
>
> Why was a __GFP_NOFAIL added here? I do not see a use of jbd_rep_kmalloc?
>
> > -#define jbd_kmalloc(size, flags) \
> > - __jbd_kmalloc(__FUNCTION__, (size), (flags), journal_oom_retry)
>
> journal_oom_retry is no longer used?
> -
journal_oom_retry (which is defined as 1 currently) is still being used
in revoke.c, the cleanup patch doesn't remove the define of
journal_oom_retry.
Since journal_oom_retry is always 1 to __jbd_kmalloc,
void * __jbd_kmalloc (const char *where, size_t size, gfp_t flags, int
retry)
{
return kmalloc(size, flags | (retry ? __GFP_NOFAIL : 0));
}
So we replace jbd_kmalloc() to kmalloc() with __GFP_NOFAIL flag on in
start_this_handle(). Other two places replacing to kmalloc() is part of
the init process, so no need for __GFP_NOFAIL flag there.
Mingming
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On Mon, 8 Oct 2007, Mingming Cao wrote:
> So we replace jbd_kmalloc() to kmalloc() with __GFP_NOFAIL flag on in
> start_this_handle(). Other two places replacing to kmalloc() is part of
> the init process, so no need for __GFP_NOFAIL flag there.
Acked-by: Christoph Lameter <[email protected]>
Acked-by: Christoph Lameter <[email protected]>