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Open Source and information security mailing list archives
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Date: Tue, 19 Dec 2006 14:34:00 -0500 (EST)
From: "Robert P. J. Day" <rpjday@...dspring.com>
To: Linux kernel mailing list <linux-kernel@...r.kernel.org>
Subject: [PATCH] Transform kmem_cache_alloc()+memset(0) -> kmem_cache_zalloc().
Replace appropriate pairs of "kmem_cache_alloc()" + "memset(0)" with
the corresponding "kmem_cache_zalloc()" call.
Signed-off-by: Robert P. J. Day <rpjday@...dspring.com>
---
Someone might want to check this carefully -- it's been a long day
and I might have pooched something here. Based on what I've read, the
transformation should have been fairly straightforward.
arch/ia64/ia32/binfmt_elf32.c | 13 ++++---------
arch/ia64/kernel/perfmon.c | 3 +--
arch/ia64/mm/init.c | 6 ++----
arch/x86_64/ia32/ia32_binfmt.c | 4 +---
arch/x86_64/ia32/syscall32.c | 3 +--
drivers/infiniband/hw/ehca/ehca_cq.c | 3 +--
drivers/infiniband/hw/ehca/ehca_mrmw.c | 6 ++----
drivers/infiniband/hw/ehca/ehca_pd.c | 3 +--
drivers/infiniband/hw/ehca/ehca_qp.c | 3 +--
drivers/scsi/aic94xx/aic94xx_hwi.c | 3 +--
drivers/scsi/scsi_lib.c | 3 +--
drivers/usb/host/hc_crisv10.c | 3 +--
drivers/usb/host/uhci-q.c | 4 +---
fs/aio.c | 3 +--
fs/configfs/dir.c | 3 +--
fs/dlm/memory.c | 4 +---
fs/dquot.c | 3 +--
fs/ecryptfs/crypto.c | 4 ++--
fs/ecryptfs/file.c | 3 +--
fs/ecryptfs/inode.c | 5 ++---
fs/ecryptfs/keystore.c | 4 +---
fs/ecryptfs/main.c | 8 ++------
fs/exec.c | 4 +---
fs/gfs2/meta_io.c | 3 +--
fs/namespace.c | 3 +--
fs/smbfs/request.c | 3 +--
fs/sysfs/dir.c | 3 +--
include/scsi/libsas.h | 3 +--
kernel/posix-timers.c | 3 +--
net/core/dst.c | 3 +--
net/core/neighbour.c | 4 +---
net/decnet/dn_table.c | 4 +---
net/ipv4/ipmr.c | 6 ++----
net/ipv4/ipvs/ip_vs_conn.c | 3 +--
net/ipv4/netfilter/ip_conntrack_core.c | 3 +--
net/ipv6/ip6_fib.c | 3 +--
net/sctp/sm_make_chunk.c | 3 +--
security/selinux/avc.c | 3 +--
security/selinux/hooks.c | 3 +--
security/selinux/ss/avtab.c | 3 +--
40 files changed, 49 insertions(+), 105 deletions(-)
diff --git a/arch/ia64/ia32/binfmt_elf32.c b/arch/ia64/ia32/binfmt_elf32.c
index 578737e..c05bda6 100644
--- a/arch/ia64/ia32/binfmt_elf32.c
+++ b/arch/ia64/ia32/binfmt_elf32.c
@@ -91,9 +91,8 @@ ia64_elf32_init (struct pt_regs *regs)
* it with privilege level 3 because the IVE uses non-privileged accesses to these
* tables. IA-32 segmentation is used to protect against IA-32 accesses to them.
*/
- vma = kmem_cache_alloc(vm_area_cachep, GFP_KERNEL);
+ vma = kmem_cache_zalloc(vm_area_cachep, GFP_KERNEL);
if (vma) {
- memset(vma, 0, sizeof(*vma));
vma->vm_mm = current->mm;
vma->vm_start = IA32_GDT_OFFSET;
vma->vm_end = vma->vm_start + PAGE_SIZE;
@@ -117,9 +116,8 @@ ia64_elf32_init (struct pt_regs *regs)
* code is locked in specific gate page, which is pointed by pretcode
* when setup_frame_ia32
*/
- vma = kmem_cache_alloc(vm_area_cachep, GFP_KERNEL);
+ vma = kmem_cache_zalloc(vm_area_cachep, GFP_KERNEL);
if (vma) {
- memset(vma, 0, sizeof(*vma));
vma->vm_mm = current->mm;
vma->vm_start = IA32_GATE_OFFSET;
vma->vm_end = vma->vm_start + PAGE_SIZE;
@@ -142,9 +140,8 @@ ia64_elf32_init (struct pt_regs *regs)
* Install LDT as anonymous memory. This gives us all-zero segment descriptors
* until a task modifies them via modify_ldt().
*/
- vma = kmem_cache_alloc(vm_area_cachep, GFP_KERNEL);
+ vma = kmem_cache_zalloc(vm_area_cachep, GFP_KERNEL);
if (vma) {
- memset(vma, 0, sizeof(*vma));
vma->vm_mm = current->mm;
vma->vm_start = IA32_LDT_OFFSET;
vma->vm_end = vma->vm_start + PAGE_ALIGN(IA32_LDT_ENTRIES*IA32_LDT_ENTRY_SIZE);
@@ -214,12 +211,10 @@ ia32_setup_arg_pages (struct linux_binprm *bprm, int executable_stack)
bprm->loader += stack_base;
bprm->exec += stack_base;
- mpnt = kmem_cache_alloc(vm_area_cachep, GFP_KERNEL);
+ mpnt = kmem_cache_zalloc(vm_area_cachep, GFP_KERNEL);
if (!mpnt)
return -ENOMEM;
- memset(mpnt, 0, sizeof(*mpnt));
-
down_write(¤t->mm->mmap_sem);
{
mpnt->vm_mm = current->mm;
diff --git a/arch/ia64/kernel/perfmon.c b/arch/ia64/kernel/perfmon.c
index aa94f60..86e144f 100644
--- a/arch/ia64/kernel/perfmon.c
+++ b/arch/ia64/kernel/perfmon.c
@@ -2301,12 +2301,11 @@ pfm_smpl_buffer_alloc(struct task_struct *task, pfm_context_t *ctx, unsigned lon
DPRINT(("smpl_buf @%p\n", smpl_buf));
/* allocate vma */
- vma = kmem_cache_alloc(vm_area_cachep, GFP_KERNEL);
+ vma = kmem_cache_zalloc(vm_area_cachep, GFP_KERNEL);
if (!vma) {
DPRINT(("Cannot allocate vma\n"));
goto error_kmem;
}
- memset(vma, 0, sizeof(*vma));
/*
* partially initialize the vma for the sampling buffer
diff --git a/arch/ia64/mm/init.c b/arch/ia64/mm/init.c
index 1a3d8a2..fa71307 100644
--- a/arch/ia64/mm/init.c
+++ b/arch/ia64/mm/init.c
@@ -156,9 +156,8 @@ ia64_init_addr_space (void)
* the problem. When the process attempts to write to the register backing store
* for the first time, it will get a SEGFAULT in this case.
*/
- vma = kmem_cache_alloc(vm_area_cachep, GFP_KERNEL);
+ vma = kmem_cache_zalloc(vm_area_cachep, GFP_KERNEL);
if (vma) {
- memset(vma, 0, sizeof(*vma));
vma->vm_mm = current->mm;
vma->vm_start = current->thread.rbs_bot & PAGE_MASK;
vma->vm_end = vma->vm_start + PAGE_SIZE;
@@ -175,9 +174,8 @@ ia64_init_addr_space (void)
/* map NaT-page at address zero to speed up speculative dereferencing of NULL: */
if (!(current->personality & MMAP_PAGE_ZERO)) {
- vma = kmem_cache_alloc(vm_area_cachep, GFP_KERNEL);
+ vma = kmem_cache_zalloc(vm_area_cachep, GFP_KERNEL);
if (vma) {
- memset(vma, 0, sizeof(*vma));
vma->vm_mm = current->mm;
vma->vm_end = PAGE_SIZE;
vma->vm_page_prot = __pgprot(pgprot_val(PAGE_READONLY) | _PAGE_MA_NAT);
diff --git a/arch/x86_64/ia32/ia32_binfmt.c b/arch/x86_64/ia32/ia32_binfmt.c
index 543ef4f..1294606 100644
--- a/arch/x86_64/ia32/ia32_binfmt.c
+++ b/arch/x86_64/ia32/ia32_binfmt.c
@@ -349,12 +349,10 @@ int ia32_setup_arg_pages(struct linux_binprm *bprm, unsigned long stack_top,
bprm->loader += stack_base;
bprm->exec += stack_base;
- mpnt = kmem_cache_alloc(vm_area_cachep, GFP_KERNEL);
+ mpnt = kmem_cache_zalloc(vm_area_cachep, GFP_KERNEL);
if (!mpnt)
return -ENOMEM;
- memset(mpnt, 0, sizeof(*mpnt));
-
down_write(&mm->mmap_sem);
{
mpnt->vm_mm = mm;
diff --git a/arch/x86_64/ia32/syscall32.c b/arch/x86_64/ia32/syscall32.c
index 3e5ed20..a0378d0 100644
--- a/arch/x86_64/ia32/syscall32.c
+++ b/arch/x86_64/ia32/syscall32.c
@@ -49,11 +49,10 @@ int syscall32_setup_pages(struct linux_binprm *bprm, int exstack)
struct mm_struct *mm = current->mm;
int ret;
- vma = kmem_cache_alloc(vm_area_cachep, GFP_KERNEL);
+ vma = kmem_cache_zalloc(vm_area_cachep, GFP_KERNEL);
if (!vma)
return -ENOMEM;
- memset(vma, 0, sizeof(struct vm_area_struct));
/* Could randomize here */
vma->vm_start = VSYSCALL32_BASE;
vma->vm_end = VSYSCALL32_END;
diff --git a/drivers/infiniband/hw/ehca/ehca_cq.c b/drivers/infiniband/hw/ehca/ehca_cq.c
index 93995b6..5fac0a6 100644
--- a/drivers/infiniband/hw/ehca/ehca_cq.c
+++ b/drivers/infiniband/hw/ehca/ehca_cq.c
@@ -134,14 +134,13 @@ struct ib_cq *ehca_create_cq(struct ib_device *device, int cqe,
if (cqe >= 0xFFFFFFFF - 64 - additional_cqe)
return ERR_PTR(-EINVAL);
- my_cq = kmem_cache_alloc(cq_cache, GFP_KERNEL);
+ my_cq = kmem_cache_zalloc(cq_cache, GFP_KERNEL);
if (!my_cq) {
ehca_err(device, "Out of memory for ehca_cq struct device=%p",
device);
return ERR_PTR(-ENOMEM);
}
- memset(my_cq, 0, sizeof(struct ehca_cq));
memset(¶m, 0, sizeof(struct ehca_alloc_cq_parms));
spin_lock_init(&my_cq->spinlock);
diff --git a/drivers/infiniband/hw/ehca/ehca_mrmw.c b/drivers/infiniband/hw/ehca/ehca_mrmw.c
index 0a5e221..077b6ea 100644
--- a/drivers/infiniband/hw/ehca/ehca_mrmw.c
+++ b/drivers/infiniband/hw/ehca/ehca_mrmw.c
@@ -53,9 +53,8 @@ static struct ehca_mr *ehca_mr_new(void)
{
struct ehca_mr *me;
- me = kmem_cache_alloc(mr_cache, GFP_KERNEL);
+ me = kmem_cache_zalloc(mr_cache, GFP_KERNEL);
if (me) {
- memset(me, 0, sizeof(struct ehca_mr));
spin_lock_init(&me->mrlock);
} else
ehca_gen_err("alloc failed");
@@ -72,9 +71,8 @@ static struct ehca_mw *ehca_mw_new(void)
{
struct ehca_mw *me;
- me = kmem_cache_alloc(mw_cache, GFP_KERNEL);
+ me = kmem_cache_zalloc(mw_cache, GFP_KERNEL);
if (me) {
- memset(me, 0, sizeof(struct ehca_mw));
spin_lock_init(&me->mwlock);
} else
ehca_gen_err("alloc failed");
diff --git a/drivers/infiniband/hw/ehca/ehca_pd.c b/drivers/infiniband/hw/ehca/ehca_pd.c
index d5345e5..79d0591 100644
--- a/drivers/infiniband/hw/ehca/ehca_pd.c
+++ b/drivers/infiniband/hw/ehca/ehca_pd.c
@@ -50,14 +50,13 @@ struct ib_pd *ehca_alloc_pd(struct ib_device *device,
{
struct ehca_pd *pd;
- pd = kmem_cache_alloc(pd_cache, GFP_KERNEL);
+ pd = kmem_cache_zalloc(pd_cache, GFP_KERNEL);
if (!pd) {
ehca_err(device, "device=%p context=%p out of memory",
device, context);
return ERR_PTR(-ENOMEM);
}
- memset(pd, 0, sizeof(struct ehca_pd));
pd->ownpid = current->tgid;
/*
diff --git a/drivers/infiniband/hw/ehca/ehca_qp.c b/drivers/infiniband/hw/ehca/ehca_qp.c
index c6c9cef..2121978 100644
--- a/drivers/infiniband/hw/ehca/ehca_qp.c
+++ b/drivers/infiniband/hw/ehca/ehca_qp.c
@@ -450,13 +450,12 @@ struct ib_qp *ehca_create_qp(struct ib_pd *pd,
if (pd->uobject && udata)
context = pd->uobject->context;
- my_qp = kmem_cache_alloc(qp_cache, GFP_KERNEL);
+ my_qp = kmem_cache_zalloc(qp_cache, GFP_KERNEL);
if (!my_qp) {
ehca_err(pd->device, "pd=%p not enough memory to alloc qp", pd);
return ERR_PTR(-ENOMEM);
}
- memset(my_qp, 0, sizeof(struct ehca_qp));
memset (&parms, 0, sizeof(struct ehca_alloc_qp_parms));
spin_lock_init(&my_qp->spinlock_s);
spin_lock_init(&my_qp->spinlock_r);
diff --git a/drivers/scsi/aic94xx/aic94xx_hwi.c b/drivers/scsi/aic94xx/aic94xx_hwi.c
index da94e12..0cd7eed 100644
--- a/drivers/scsi/aic94xx/aic94xx_hwi.c
+++ b/drivers/scsi/aic94xx/aic94xx_hwi.c
@@ -1052,10 +1052,9 @@ static inline struct asd_ascb *asd_ascb_alloc(struct asd_ha_struct *asd_ha,
struct asd_ascb *ascb;
unsigned long flags;
- ascb = kmem_cache_alloc(asd_ascb_cache, gfp_flags);
+ ascb = kmem_cache_zalloc(asd_ascb_cache, gfp_flags);
if (ascb) {
- memset(ascb, 0, sizeof(*ascb));
ascb->dma_scb.size = sizeof(struct scb);
ascb->dma_scb.vaddr = dma_pool_alloc(asd_ha->scb_pool,
gfp_flags,
diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index 1748e27..c969a84 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -390,10 +390,9 @@ int scsi_execute_async(struct scsi_device *sdev, const unsigned char *cmd,
int err = 0;
int write = (data_direction == DMA_TO_DEVICE);
- sioc = kmem_cache_alloc(scsi_io_context_cache, gfp);
+ sioc = kmem_cache_zalloc(scsi_io_context_cache, gfp);
if (!sioc)
return DRIVER_ERROR << 24;
- memset(sioc, 0, sizeof(*sioc));
req = blk_get_request(sdev->request_queue, write, gfp);
if (!req)
diff --git a/drivers/usb/host/hc_crisv10.c b/drivers/usb/host/hc_crisv10.c
index 282d82e..f0ffb89 100644
--- a/drivers/usb/host/hc_crisv10.c
+++ b/drivers/usb/host/hc_crisv10.c
@@ -2163,9 +2163,8 @@ static void etrax_usb_add_to_bulk_sb_list(struct urb *urb, int epid)
maxlen = usb_maxpacket(urb->dev, urb->pipe, usb_pipeout(urb->pipe));
- sb_desc = (USB_SB_Desc_t*)kmem_cache_alloc(usb_desc_cache, SLAB_FLAG);
+ sb_desc = kmem_cache_zalloc(usb_desc_cache, SLAB_FLAG);
assert(sb_desc != NULL);
- memset(sb_desc, 0, sizeof(USB_SB_Desc_t));
if (usb_pipeout(urb->pipe)) {
diff --git a/drivers/usb/host/uhci-q.c b/drivers/usb/host/uhci-q.c
index 30b8845..e663fe4 100644
--- a/drivers/usb/host/uhci-q.c
+++ b/drivers/usb/host/uhci-q.c
@@ -498,12 +498,10 @@ static inline struct urb_priv *uhci_alloc_urb_priv(struct uhci_hcd *uhci,
{
struct urb_priv *urbp;
- urbp = kmem_cache_alloc(uhci_up_cachep, GFP_ATOMIC);
+ urbp = kmem_cache_zalloc(uhci_up_cachep, GFP_ATOMIC);
if (!urbp)
return NULL;
- memset((void *)urbp, 0, sizeof(*urbp));
-
urbp->urb = urb;
urb->hcpriv = urbp;
diff --git a/fs/aio.c b/fs/aio.c
index 5f577a6..43f6cdf 100644
--- a/fs/aio.c
+++ b/fs/aio.c
@@ -211,11 +211,10 @@ static struct kioctx *ioctx_alloc(unsigned nr_events)
if ((unsigned long)nr_events > aio_max_nr)
return ERR_PTR(-EAGAIN);
- ctx = kmem_cache_alloc(kioctx_cachep, GFP_KERNEL);
+ ctx = kmem_cache_zalloc(kioctx_cachep, GFP_KERNEL);
if (!ctx)
return ERR_PTR(-ENOMEM);
- memset(ctx, 0, sizeof(*ctx));
ctx->max_reqs = nr_events;
mm = ctx->mm = current->mm;
atomic_inc(&mm->mm_count);
diff --git a/fs/configfs/dir.c b/fs/configfs/dir.c
index 1814ba4..9371ee2 100644
--- a/fs/configfs/dir.c
+++ b/fs/configfs/dir.c
@@ -72,11 +72,10 @@ static struct configfs_dirent *configfs_new_dirent(struct configfs_dirent * pare
{
struct configfs_dirent * sd;
- sd = kmem_cache_alloc(configfs_dir_cachep, GFP_KERNEL);
+ sd = kmem_cache_zalloc(configfs_dir_cachep, GFP_KERNEL);
if (!sd)
return NULL;
- memset(sd, 0, sizeof(*sd));
atomic_set(&sd->s_count, 1);
INIT_LIST_HEAD(&sd->s_links);
INIT_LIST_HEAD(&sd->s_children);
diff --git a/fs/dlm/memory.c b/fs/dlm/memory.c
index 5352b03..f858fef 100644
--- a/fs/dlm/memory.c
+++ b/fs/dlm/memory.c
@@ -76,9 +76,7 @@ struct dlm_lkb *allocate_lkb(struct dlm_ls *ls)
{
struct dlm_lkb *lkb;
- lkb = kmem_cache_alloc(lkb_cache, GFP_KERNEL);
- if (lkb)
- memset(lkb, 0, sizeof(*lkb));
+ lkb = kmem_cache_zalloc(lkb_cache, GFP_KERNEL);
return lkb;
}
diff --git a/fs/dquot.c b/fs/dquot.c
index 0952cc4..a561fb2 100644
--- a/fs/dquot.c
+++ b/fs/dquot.c
@@ -600,11 +600,10 @@ static struct dquot *get_empty_dquot(struct super_block *sb, int type)
{
struct dquot *dquot;
- dquot = kmem_cache_alloc(dquot_cachep, GFP_NOFS);
+ dquot = kmem_cache_zalloc(dquot_cachep, GFP_NOFS);
if(!dquot)
return NODQUOT;
- memset((caddr_t)dquot, 0, sizeof(struct dquot));
mutex_init(&dquot->dq_lock);
INIT_LIST_HEAD(&dquot->dq_free);
INIT_LIST_HEAD(&dquot->dq_inuse);
diff --git a/fs/ecryptfs/crypto.c b/fs/ecryptfs/crypto.c
index 7196f50..33f92d7 100644
--- a/fs/ecryptfs/crypto.c
+++ b/fs/ecryptfs/crypto.c
@@ -1334,13 +1334,13 @@ int ecryptfs_write_headers(struct dentry *ecryptfs_dentry,
goto out;
}
/* Released in this function */
- page_virt = kmem_cache_alloc(ecryptfs_header_cache_0, GFP_USER);
+ page_virt = kmem_cache_zalloc(ecryptfs_header_cache_0, GFP_USER);
if (!page_virt) {
ecryptfs_printk(KERN_ERR, "Out of memory\n");
rc = -ENOMEM;
goto out;
}
- memset(page_virt, 0, PAGE_CACHE_SIZE);
+
rc = ecryptfs_write_headers_virt(page_virt, crypt_stat,
ecryptfs_dentry);
if (unlikely(rc)) {
diff --git a/fs/ecryptfs/file.c b/fs/ecryptfs/file.c
index c5a2e52..779c347 100644
--- a/fs/ecryptfs/file.c
+++ b/fs/ecryptfs/file.c
@@ -251,7 +251,7 @@ static int ecryptfs_open(struct inode *inode, struct file *file)
int lower_flags;
/* Released in ecryptfs_release or end of function if failure */
- file_info = kmem_cache_alloc(ecryptfs_file_info_cache, GFP_KERNEL);
+ file_info = kmem_cache_zalloc(ecryptfs_file_info_cache, GFP_KERNEL);
ecryptfs_set_file_private(file, file_info);
if (!file_info) {
ecryptfs_printk(KERN_ERR,
@@ -259,7 +259,6 @@ static int ecryptfs_open(struct inode *inode, struct file *file)
rc = -ENOMEM;
goto out;
}
- memset(file_info, 0, sizeof(*file_info));
lower_dentry = ecryptfs_dentry_to_lower(ecryptfs_dentry);
crypt_stat = &ecryptfs_inode_to_private(inode)->crypt_stat;
mount_crypt_stat = &ecryptfs_superblock_to_private(
diff --git a/fs/ecryptfs/inode.c b/fs/ecryptfs/inode.c
index 11f5e50..d4f02f3 100644
--- a/fs/ecryptfs/inode.c
+++ b/fs/ecryptfs/inode.c
@@ -361,8 +361,7 @@ static struct dentry *ecryptfs_lookup(struct inode *dir, struct dentry *dentry,
goto out;
}
/* Released in this function */
- page_virt =
- (char *)kmem_cache_alloc(ecryptfs_header_cache_2,
+ page_virt = kmem_cache_zalloc(ecryptfs_header_cache_2,
GFP_USER);
if (!page_virt) {
rc = -ENOMEM;
@@ -370,7 +369,7 @@ static struct dentry *ecryptfs_lookup(struct inode *dir, struct dentry *dentry,
"Cannot ecryptfs_kmalloc a page\n");
goto out_dput;
}
- memset(page_virt, 0, PAGE_CACHE_SIZE);
+
rc = ecryptfs_read_header_region(page_virt, lower_dentry, nd->mnt);
crypt_stat = &ecryptfs_inode_to_private(dentry->d_inode)->crypt_stat;
if (!ECRYPTFS_CHECK_FLAG(crypt_stat->flags, ECRYPTFS_POLICY_APPLIED))
diff --git a/fs/ecryptfs/keystore.c b/fs/ecryptfs/keystore.c
index 745c0f1..80bccd5 100644
--- a/fs/ecryptfs/keystore.c
+++ b/fs/ecryptfs/keystore.c
@@ -207,14 +207,12 @@ parse_tag_3_packet(struct ecryptfs_crypt_stat *crypt_stat,
/* Released: wipe_auth_tok_list called in ecryptfs_parse_packet_set or
* at end of function upon failure */
auth_tok_list_item =
- kmem_cache_alloc(ecryptfs_auth_tok_list_item_cache, GFP_KERNEL);
+ kmem_cache_zalloc(ecryptfs_auth_tok_list_item_cache, GFP_KERNEL);
if (!auth_tok_list_item) {
ecryptfs_printk(KERN_ERR, "Unable to allocate memory\n");
rc = -ENOMEM;
goto out;
}
- memset(auth_tok_list_item, 0,
- sizeof(struct ecryptfs_auth_tok_list_item));
(*new_auth_tok) = &auth_tok_list_item->auth_tok;
/* check for body size - one to two bytes */
diff --git a/fs/ecryptfs/main.c b/fs/ecryptfs/main.c
index d0541ae..fe41ab1 100644
--- a/fs/ecryptfs/main.c
+++ b/fs/ecryptfs/main.c
@@ -378,15 +378,13 @@ ecryptfs_fill_super(struct super_block *sb, void *raw_data, int silent)
/* Released in ecryptfs_put_super() */
ecryptfs_set_superblock_private(sb,
- kmem_cache_alloc(ecryptfs_sb_info_cache,
+ kmem_cache_zalloc(ecryptfs_sb_info_cache,
GFP_KERNEL));
if (!ecryptfs_superblock_to_private(sb)) {
ecryptfs_printk(KERN_WARNING, "Out of memory\n");
rc = -ENOMEM;
goto out;
}
- memset(ecryptfs_superblock_to_private(sb), 0,
- sizeof(struct ecryptfs_sb_info));
sb->s_op = &ecryptfs_sops;
/* Released through deactivate_super(sb) from get_sb_nodev */
sb->s_root = d_alloc(NULL, &(const struct qstr) {
@@ -402,7 +400,7 @@ ecryptfs_fill_super(struct super_block *sb, void *raw_data, int silent)
/* Released in d_release when dput(sb->s_root) is called */
/* through deactivate_super(sb) from get_sb_nodev() */
ecryptfs_set_dentry_private(sb->s_root,
- kmem_cache_alloc(ecryptfs_dentry_info_cache,
+ kmem_cache_zalloc(ecryptfs_dentry_info_cache,
GFP_KERNEL));
if (!ecryptfs_dentry_to_private(sb->s_root)) {
ecryptfs_printk(KERN_ERR,
@@ -410,8 +408,6 @@ ecryptfs_fill_super(struct super_block *sb, void *raw_data, int silent)
rc = -ENOMEM;
goto out;
}
- memset(ecryptfs_dentry_to_private(sb->s_root), 0,
- sizeof(struct ecryptfs_dentry_info));
rc = 0;
out:
/* Should be able to rely on deactivate_super called from
diff --git a/fs/exec.c b/fs/exec.c
index 11fe93f..7e36c6f 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -405,12 +405,10 @@ int setup_arg_pages(struct linux_binprm *bprm,
bprm->loader += stack_base;
bprm->exec += stack_base;
- mpnt = kmem_cache_alloc(vm_area_cachep, GFP_KERNEL);
+ mpnt = kmem_cache_zalloc(vm_area_cachep, GFP_KERNEL);
if (!mpnt)
return -ENOMEM;
- memset(mpnt, 0, sizeof(*mpnt));
-
down_write(&mm->mmap_sem);
{
mpnt->vm_mm = mm;
diff --git a/fs/gfs2/meta_io.c b/fs/gfs2/meta_io.c
index 0e34d99..e62d4f6 100644
--- a/fs/gfs2/meta_io.c
+++ b/fs/gfs2/meta_io.c
@@ -282,8 +282,7 @@ void gfs2_attach_bufdata(struct gfs2_glock *gl, struct buffer_head *bh,
return;
}
- bd = kmem_cache_alloc(gfs2_bufdata_cachep, GFP_NOFS | __GFP_NOFAIL),
- memset(bd, 0, sizeof(struct gfs2_bufdata));
+ bd = kmem_cache_zalloc(gfs2_bufdata_cachep, GFP_NOFS | __GFP_NOFAIL),
bd->bd_bh = bh;
bd->bd_gl = gl;
diff --git a/fs/namespace.c b/fs/namespace.c
index 5ef336c..fd999ca 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -53,9 +53,8 @@ static inline unsigned long hash(struct vfsmount *mnt, struct dentry *dentry)
struct vfsmount *alloc_vfsmnt(const char *name)
{
- struct vfsmount *mnt = kmem_cache_alloc(mnt_cache, GFP_KERNEL);
+ struct vfsmount *mnt = kmem_cache_zalloc(mnt_cache, GFP_KERNEL);
if (mnt) {
- memset(mnt, 0, sizeof(struct vfsmount));
atomic_set(&mnt->mnt_count, 1);
INIT_LIST_HEAD(&mnt->mnt_hash);
INIT_LIST_HEAD(&mnt->mnt_child);
diff --git a/fs/smbfs/request.c b/fs/smbfs/request.c
index a4bcae8..42261db 100644
--- a/fs/smbfs/request.c
+++ b/fs/smbfs/request.c
@@ -61,7 +61,7 @@ static struct smb_request *smb_do_alloc_request(struct smb_sb_info *server,
struct smb_request *req;
unsigned char *buf = NULL;
- req = kmem_cache_alloc(req_cachep, GFP_KERNEL);
+ req = kmem_cache_zalloc(req_cachep, GFP_KERNEL);
VERBOSE("allocating request: %p\n", req);
if (!req)
goto out;
@@ -74,7 +74,6 @@ static struct smb_request *smb_do_alloc_request(struct smb_sb_info *server,
}
}
- memset(req, 0, sizeof(struct smb_request));
req->rq_buffer = buf;
req->rq_bufsize = bufsize;
req->rq_server = server;
diff --git a/fs/sysfs/dir.c b/fs/sysfs/dir.c
index 511edef..d216a87 100644
--- a/fs/sysfs/dir.c
+++ b/fs/sysfs/dir.c
@@ -37,11 +37,10 @@ static struct sysfs_dirent * sysfs_new_dirent(struct sysfs_dirent * parent_sd,
{
struct sysfs_dirent * sd;
- sd = kmem_cache_alloc(sysfs_dir_cachep, GFP_KERNEL);
+ sd = kmem_cache_zalloc(sysfs_dir_cachep, GFP_KERNEL);
if (!sd)
return NULL;
- memset(sd, 0, sizeof(*sd));
atomic_set(&sd->s_count, 1);
atomic_set(&sd->s_event, 1);
INIT_LIST_HEAD(&sd->s_children);
diff --git a/include/scsi/libsas.h b/include/scsi/libsas.h
index 0c775fc..0689e00 100644
--- a/include/scsi/libsas.h
+++ b/include/scsi/libsas.h
@@ -558,10 +558,9 @@ struct sas_task {
static inline struct sas_task *sas_alloc_task(gfp_t flags)
{
extern struct kmem_cache *sas_task_cache;
- struct sas_task *task = kmem_cache_alloc(sas_task_cache, flags);
+ struct sas_task *task = kmem_cache_zalloc(sas_task_cache, flags);
if (task) {
- memset(task, 0, sizeof(*task));
INIT_LIST_HEAD(&task->list);
spin_lock_init(&task->task_state_lock);
task->task_state_flags = SAS_TASK_STATE_PENDING;
diff --git a/kernel/posix-timers.c b/kernel/posix-timers.c
index 5fe87de..a1bf616 100644
--- a/kernel/posix-timers.c
+++ b/kernel/posix-timers.c
@@ -399,10 +399,9 @@ EXPORT_SYMBOL_GPL(register_posix_clock);
static struct k_itimer * alloc_posix_timer(void)
{
struct k_itimer *tmr;
- tmr = kmem_cache_alloc(posix_timers_cache, GFP_KERNEL);
+ tmr = kmem_cache_zalloc(posix_timers_cache, GFP_KERNEL);
if (!tmr)
return tmr;
- memset(tmr, 0, sizeof (struct k_itimer));
if (unlikely(!(tmr->sigq = sigqueue_alloc()))) {
kmem_cache_free(posix_timers_cache, tmr);
tmr = NULL;
diff --git a/net/core/dst.c b/net/core/dst.c
index 836ec66..1aa89a2 100644
--- a/net/core/dst.c
+++ b/net/core/dst.c
@@ -125,10 +125,9 @@ void * dst_alloc(struct dst_ops * ops)
if (ops->gc())
return NULL;
}
- dst = kmem_cache_alloc(ops->kmem_cachep, GFP_ATOMIC);
+ dst = kmem_cache_zalloc(ops->kmem_cachep, GFP_ATOMIC);
if (!dst)
return NULL;
- memset(dst, 0, ops->entry_size);
atomic_set(&dst->__refcnt, 0);
dst->ops = ops;
dst->lastuse = jiffies;
diff --git a/net/core/neighbour.c b/net/core/neighbour.c
index e7300b6..0fbacd2 100644
--- a/net/core/neighbour.c
+++ b/net/core/neighbour.c
@@ -251,12 +251,10 @@ static struct neighbour *neigh_alloc(struct neigh_table *tbl)
goto out_entries;
}
- n = kmem_cache_alloc(tbl->kmem_cachep, GFP_ATOMIC);
+ n = kmem_cache_zalloc(tbl->kmem_cachep, GFP_ATOMIC);
if (!n)
goto out_entries;
- memset(n, 0, tbl->entry_size);
-
skb_queue_head_init(&n->arp_queue);
rwlock_init(&n->lock);
n->updated = n->used = now;
diff --git a/net/decnet/dn_table.c b/net/decnet/dn_table.c
index 13b2421..1f702cd 100644
--- a/net/decnet/dn_table.c
+++ b/net/decnet/dn_table.c
@@ -590,12 +590,10 @@ create:
replace:
err = -ENOBUFS;
- new_f = kmem_cache_alloc(dn_hash_kmem, GFP_KERNEL);
+ new_f = kmem_cache_zalloc(dn_hash_kmem, GFP_KERNEL);
if (new_f == NULL)
goto out;
- memset(new_f, 0, sizeof(struct dn_fib_node));
-
new_f->fn_key = key;
new_f->fn_type = type;
new_f->fn_scope = r->rtm_scope;
diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c
index ecb5422..d7e1e60 100644
--- a/net/ipv4/ipmr.c
+++ b/net/ipv4/ipmr.c
@@ -479,20 +479,18 @@ static struct mfc_cache *ipmr_cache_find(__be32 origin, __be32 mcastgrp)
*/
static struct mfc_cache *ipmr_cache_alloc(void)
{
- struct mfc_cache *c=kmem_cache_alloc(mrt_cachep, GFP_KERNEL);
+ struct mfc_cache *c=kmem_cache_zalloc(mrt_cachep, GFP_KERNEL);
if(c==NULL)
return NULL;
- memset(c, 0, sizeof(*c));
c->mfc_un.res.minvif = MAXVIFS;
return c;
}
static struct mfc_cache *ipmr_cache_alloc_unres(void)
{
- struct mfc_cache *c=kmem_cache_alloc(mrt_cachep, GFP_ATOMIC);
+ struct mfc_cache *c=kmem_cache_zalloc(mrt_cachep, GFP_ATOMIC);
if(c==NULL)
return NULL;
- memset(c, 0, sizeof(*c));
skb_queue_head_init(&c->mfc_un.unres.unresolved);
c->mfc_un.unres.expires = jiffies + 10*HZ;
return c;
diff --git a/net/ipv4/ipvs/ip_vs_conn.c b/net/ipv4/ipvs/ip_vs_conn.c
index 8086787..3aec4ac 100644
--- a/net/ipv4/ipvs/ip_vs_conn.c
+++ b/net/ipv4/ipvs/ip_vs_conn.c
@@ -603,13 +603,12 @@ ip_vs_conn_new(int proto, __be32 caddr, __be16 cport, __be32 vaddr, __be16 vport
struct ip_vs_conn *cp;
struct ip_vs_protocol *pp = ip_vs_proto_get(proto);
- cp = kmem_cache_alloc(ip_vs_conn_cachep, GFP_ATOMIC);
+ cp = kmem_cache_zalloc(ip_vs_conn_cachep, GFP_ATOMIC);
if (cp == NULL) {
IP_VS_ERR_RL("ip_vs_conn_new: no memory available.\n");
return NULL;
}
- memset(cp, 0, sizeof(*cp));
INIT_LIST_HEAD(&cp->c_list);
init_timer(&cp->timer);
cp->timer.data = (unsigned long)cp;
diff --git a/net/ipv4/netfilter/ip_conntrack_core.c b/net/ipv4/netfilter/ip_conntrack_core.c
index 8556a4f..62be2eb 100644
--- a/net/ipv4/netfilter/ip_conntrack_core.c
+++ b/net/ipv4/netfilter/ip_conntrack_core.c
@@ -638,14 +638,13 @@ struct ip_conntrack *ip_conntrack_alloc(struct ip_conntrack_tuple *orig,
}
}
- conntrack = kmem_cache_alloc(ip_conntrack_cachep, GFP_ATOMIC);
+ conntrack = kmem_cache_zalloc(ip_conntrack_cachep, GFP_ATOMIC);
if (!conntrack) {
DEBUGP("Can't allocate conntrack.\n");
atomic_dec(&ip_conntrack_count);
return ERR_PTR(-ENOMEM);
}
- memset(conntrack, 0, sizeof(*conntrack));
atomic_set(&conntrack->ct_general.use, 1);
conntrack->ct_general.destroy = destroy_conntrack;
conntrack->tuplehash[IP_CT_DIR_ORIGINAL].tuple = *orig;
diff --git a/net/ipv6/ip6_fib.c b/net/ipv6/ip6_fib.c
index 96d8310..827f884 100644
--- a/net/ipv6/ip6_fib.c
+++ b/net/ipv6/ip6_fib.c
@@ -150,8 +150,7 @@ static __inline__ struct fib6_node * node_alloc(void)
{
struct fib6_node *fn;
- if ((fn = kmem_cache_alloc(fib6_node_kmem, GFP_ATOMIC)) != NULL)
- memset(fn, 0, sizeof(struct fib6_node));
+ fn = kmem_cache_zalloc(fib6_node_kmem, GFP_ATOMIC);
return fn;
}
diff --git a/net/sctp/sm_make_chunk.c b/net/sctp/sm_make_chunk.c
index 30927d3..3424c5d 100644
--- a/net/sctp/sm_make_chunk.c
+++ b/net/sctp/sm_make_chunk.c
@@ -979,11 +979,10 @@ struct sctp_chunk *sctp_chunkify(struct sk_buff *skb,
{
struct sctp_chunk *retval;
- retval = kmem_cache_alloc(sctp_chunk_cachep, GFP_ATOMIC);
+ retval = kmem_cache_zalloc(sctp_chunk_cachep, GFP_ATOMIC);
if (!retval)
goto nodata;
- memset(retval, 0, sizeof(struct sctp_chunk));
if (!sk) {
SCTP_DEBUG_PRINTK("chunkifying skb %p w/o an sk\n", skb);
diff --git a/security/selinux/avc.c b/security/selinux/avc.c
index e7c0b5e..da8caf1 100644
--- a/security/selinux/avc.c
+++ b/security/selinux/avc.c
@@ -332,11 +332,10 @@ static struct avc_node *avc_alloc_node(void)
{
struct avc_node *node;
- node = kmem_cache_alloc(avc_node_cachep, GFP_ATOMIC);
+ node = kmem_cache_zalloc(avc_node_cachep, GFP_ATOMIC);
if (!node)
goto out;
- memset(node, 0, sizeof(*node));
INIT_RCU_HEAD(&node->rhead);
INIT_LIST_HEAD(&node->list);
atomic_set(&node->ae.used, 1);
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index 65fb5e8..9eeab82 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -181,11 +181,10 @@ static int inode_alloc_security(struct inode *inode)
struct task_security_struct *tsec = current->security;
struct inode_security_struct *isec;
- isec = kmem_cache_alloc(sel_inode_cache, GFP_KERNEL);
+ isec = kmem_cache_zalloc(sel_inode_cache, GFP_KERNEL);
if (!isec)
return -ENOMEM;
- memset(isec, 0, sizeof(*isec));
mutex_init(&isec->lock);
INIT_LIST_HEAD(&isec->list);
isec->inode = inode;
diff --git a/security/selinux/ss/avtab.c b/security/selinux/ss/avtab.c
index ebb993c..9142073 100644
--- a/security/selinux/ss/avtab.c
+++ b/security/selinux/ss/avtab.c
@@ -36,10 +36,9 @@ avtab_insert_node(struct avtab *h, int hvalue,
struct avtab_key *key, struct avtab_datum *datum)
{
struct avtab_node * newnode;
- newnode = kmem_cache_alloc(avtab_node_cachep, GFP_KERNEL);
+ newnode = kmem_cache_zalloc(avtab_node_cachep, GFP_KERNEL);
if (newnode == NULL)
return NULL;
- memset(newnode, 0, sizeof(struct avtab_node));
newnode->key = *key;
newnode->datum = *datum;
if (prev) {
-
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