[PATCH] JBD/ext34 cleanups: convert to kzalloc

Mingming Cao
2007-09-21T23:13:58Z

Convert kmalloc to kzalloc() and get rid of the memset().

Signed-off-by: Mingming Cao <cmm@us.ibm.com>
---
fs/ext3/xattr.c | 3 +--
fs/ext4/xattr.c | 3 +--
fs/jbd/journal.c | 3 +--
fs/jbd/transaction.c | 2 +-
fs/jbd2/journal.c | 3 +--
fs/jbd2/transaction.c | 2 +-
6 files changed, 6 insertions(+), 10 deletions(-)

Index: linux-2.6.23-rc6/fs/jbd/journal.c
===================================================================
--- linux-2.6.23-rc6.orig/fs/jbd/journal.c 2007-09-21 09:08:02.000000000
-0700
+++ linux-2.6.23-rc6/fs/jbd/journal.c 2007-09-21 09:10:37.000000000
-0700
@@ -653,10 +653,9 @@ static journal_t * journal_init_common (
journal_t *journal;
int err;

- journal = kmalloc(sizeof(*journal), GFP_KERNEL|__GFP_NOFAIL);
+ 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);
Index: linux-2.6.23-rc6/fs/jbd/transaction.c
===================================================================
--- linux-2.6.23-rc6.orig/fs/jbd/transaction.c 2007-09-21
09:13:11.000000000 -0700
+++ linux-2.6.23-rc6/fs/jbd/transaction.c 2007-09-21 09:13:24.000000000
-0700
@@ -96,7 +96,7 @@ static int start_this_handle(journal_t *

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;
Index: linux-2.6.23-rc6/fs/jbd2/journal.c
===================================================================
--- linux-2.6.23-rc6.orig/fs/jbd2/journal.c 2007-09-21
09:10:53.000000000 -0700
+++ linux-2.6.23-rc6/fs/jbd2/journal.c 2007-09-21 09:11:13.000000000
-0700
@@ -654,10 +654,9 @@ static journal_t * journal_init_common (
journal_t *journal;
int err;

- journal = kmalloc(sizeof(*journal), GFP_KERNEL|__GFP_NOFAIL);
+ 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);
Index: linux-2.6.23-rc6/fs/jbd2/transaction.c
===================================================================
--- linux-2.6.23-rc6.orig/fs/jbd2/transaction.c 2007-09-21
09:12:46.000000000 -0700
+++ linux-2.6.23-rc6/fs/jbd2/transaction.c 2007-09-21 09:12:59.000000000
-0700
@@ -96,7 +96,7 @@ static int start_this_handle(journal_t *

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;
Index: linux-2.6.23-rc6/fs/ext3/xattr.c
===================================================================
--- linux-2.6.23-rc6.orig/fs/ext3/xattr.c 2007-09-21 10:22:24.000000000
-0700
+++ linux-2.6.23-rc6/fs/ext3/xattr.c 2007-09-21 10:24:19.000000000 -0700
@@ -741,12 +741,11 @@ ext3_xattr_block_set(handle_t *handle, s
}
} 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(EXT3_XATTR_MAGIC);
header(s->base)->h_blocks = cpu_to_le32(1);
header(s->base)->h_refcount = cpu_to_le32(1);
Index: linux-2.6.23-rc6/fs/ext4/xattr.c
===================================================================
--- linux-2.6.23-rc6.orig/fs/ext4/xattr.c 2007-09-21 10:20:21.000000000
-0700
+++ linux-2.6.23-rc6/fs/ext4/xattr.c 2007-09-21 10:21:00.000000000 -0700
@@ -750,12 +750,11 @@ ext4_xattr_block_set(handle_t *handle, s
}
} 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);