summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
Diffstat
-rw-r--r--arch/ia64/kernel/perfmon.c4
-rw-r--r--arch/ia64/mm/init.c8
-rw-r--r--fs/exec.c4
-rw-r--r--include/linux/mm.h4
-rw-r--r--kernel/fork.c21
-rw-r--r--mm/mmap.c22
-rw-r--r--mm/nommu.c8
7 files changed, 44 insertions, 27 deletions
diff --git a/arch/ia64/kernel/perfmon.c b/arch/ia64/kernel/perfmon.c
index 3b38c717008a..e859246badca 100644
--- a/arch/ia64/kernel/perfmon.c
+++ b/arch/ia64/kernel/perfmon.c
@@ -2278,7 +2278,7 @@ pfm_smpl_buffer_alloc(struct task_struct *task, struct file *filp, pfm_context_t
DPRINT(("smpl_buf @%p\n", smpl_buf));
/* allocate vma */
- vma = kmem_cache_zalloc(vm_area_cachep, GFP_KERNEL);
+ vma = vm_area_alloc();
if (!vma) {
DPRINT(("Cannot allocate vma\n"));
goto error_kmem;
@@ -2346,7 +2346,7 @@ pfm_smpl_buffer_alloc(struct task_struct *task, struct file *filp, pfm_context_t
return 0;
error:
- kmem_cache_free(vm_area_cachep, vma);
+ vm_area_free(vma);
error_kmem:
pfm_rvfree(smpl_buf, size);
diff --git a/arch/ia64/mm/init.c b/arch/ia64/mm/init.c
index 18278b448530..3f2321bffb72 100644
--- a/arch/ia64/mm/init.c
+++ b/arch/ia64/mm/init.c
@@ -114,7 +114,7 @@ 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_zalloc(vm_area_cachep, GFP_KERNEL);
+ vma = vm_area_alloc();
if (vma) {
INIT_LIST_HEAD(&vma->anon_vma_chain);
vma->vm_mm = current->mm;
@@ -125,7 +125,7 @@ ia64_init_addr_space (void)
down_write(&current->mm->mmap_sem);
if (insert_vm_struct(current->mm, vma)) {
up_write(&current->mm->mmap_sem);
- kmem_cache_free(vm_area_cachep, vma);
+ vm_area_free(vma);
return;
}
up_write(&current->mm->mmap_sem);
@@ -133,7 +133,7 @@ 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_zalloc(vm_area_cachep, GFP_KERNEL);
+ vma = vm_area_alloc();
if (vma) {
INIT_LIST_HEAD(&vma->anon_vma_chain);
vma->vm_mm = current->mm;
@@ -144,7 +144,7 @@ ia64_init_addr_space (void)
down_write(&current->mm->mmap_sem);
if (insert_vm_struct(current->mm, vma)) {
up_write(&current->mm->mmap_sem);
- kmem_cache_free(vm_area_cachep, vma);
+ vm_area_free(vma);
return;
}
up_write(&current->mm->mmap_sem);
diff --git a/fs/exec.c b/fs/exec.c
index 2d4e0075bd24..9bd83989ea25 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -290,7 +290,7 @@ static int __bprm_mm_init(struct linux_binprm *bprm)
struct vm_area_struct *vma = NULL;
struct mm_struct *mm = bprm->mm;
- bprm->vma = vma = kmem_cache_zalloc(vm_area_cachep, GFP_KERNEL);
+ bprm->vma = vma = vm_area_alloc();
if (!vma)
return -ENOMEM;
@@ -326,7 +326,7 @@ err:
up_write(&mm->mmap_sem);
err_free:
bprm->vma = NULL;
- kmem_cache_free(vm_area_cachep, vma);
+ vm_area_free(vma);
return err;
}
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 3982c83fdcbf..de2fd86c6154 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -155,7 +155,9 @@ extern int overcommit_kbytes_handler(struct ctl_table *, int, void __user *,
* mmap() functions).
*/
-extern struct kmem_cache *vm_area_cachep;
+struct vm_area_struct *vm_area_alloc(void);
+struct vm_area_struct *vm_area_dup(struct vm_area_struct *);
+void vm_area_free(struct vm_area_struct *);
#ifndef CONFIG_MMU
extern struct rb_root nommu_region_tree;
diff --git a/kernel/fork.c b/kernel/fork.c
index 9440d61b925c..0e23deb5acfc 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -303,11 +303,26 @@ struct kmem_cache *files_cachep;
struct kmem_cache *fs_cachep;
/* SLAB cache for vm_area_struct structures */
-struct kmem_cache *vm_area_cachep;
+static struct kmem_cache *vm_area_cachep;
/* SLAB cache for mm_struct structures (tsk->mm) */
static struct kmem_cache *mm_cachep;
+struct vm_area_struct *vm_area_alloc(void)
+{
+ return kmem_cache_zalloc(vm_area_cachep, GFP_KERNEL);
+}
+
+struct vm_area_struct *vm_area_dup(struct vm_area_struct *orig)
+{
+ return kmem_cache_alloc(vm_area_cachep, GFP_KERNEL);
+}
+
+void vm_area_free(struct vm_area_struct *vma)
+{
+ kmem_cache_free(vm_area_cachep, vma);
+}
+
static void account_kernel_stack(struct task_struct *tsk, int account)
{
void *stack = task_stack_page(tsk);
@@ -455,7 +470,7 @@ static __latent_entropy int dup_mmap(struct mm_struct *mm,
goto fail_nomem;
charge = len;
}
- tmp = kmem_cache_alloc(vm_area_cachep, GFP_KERNEL);
+ tmp = vm_area_dup(mpnt);
if (!tmp)
goto fail_nomem;
*tmp = *mpnt;
@@ -539,7 +554,7 @@ fail_uprobe_end:
fail_nomem_anon_vma_fork:
mpol_put(vma_policy(tmp));
fail_nomem_policy:
- kmem_cache_free(vm_area_cachep, tmp);
+ vm_area_free(tmp);
fail_nomem:
retval = -ENOMEM;
vm_unacct_memory(charge);
diff --git a/mm/mmap.c b/mm/mmap.c
index 5801b5f0a634..4286ad2dd1f5 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -182,7 +182,7 @@ static struct vm_area_struct *remove_vma(struct vm_area_struct *vma)
if (vma->vm_file)
fput(vma->vm_file);
mpol_put(vma_policy(vma));
- kmem_cache_free(vm_area_cachep, vma);
+ vm_area_free(vma);
return next;
}
@@ -911,7 +911,7 @@ again:
anon_vma_merge(vma, next);
mm->map_count--;
mpol_put(vma_policy(next));
- kmem_cache_free(vm_area_cachep, next);
+ vm_area_free(next);
/*
* In mprotect's case 6 (see comments on vma_merge),
* we must remove another next too. It would clutter
@@ -1729,7 +1729,7 @@ unsigned long mmap_region(struct file *file, unsigned long addr,
* specific mapper. the address has already been validated, but
* not unmapped, but the maps are removed from the list.
*/
- vma = kmem_cache_zalloc(vm_area_cachep, GFP_KERNEL);
+ vma = vm_area_alloc();
if (!vma) {
error = -ENOMEM;
goto unacct_error;
@@ -1832,7 +1832,7 @@ allow_write_and_free_vma:
if (vm_flags & VM_DENYWRITE)
allow_write_access(file);
free_vma:
- kmem_cache_free(vm_area_cachep, vma);
+ vm_area_free(vma);
unacct_error:
if (charged)
vm_unacct_memory(charged);
@@ -2620,7 +2620,7 @@ int __split_vma(struct mm_struct *mm, struct vm_area_struct *vma,
return err;
}
- new = kmem_cache_alloc(vm_area_cachep, GFP_KERNEL);
+ new = vm_area_dup(vma);
if (!new)
return -ENOMEM;
@@ -2669,7 +2669,7 @@ int __split_vma(struct mm_struct *mm, struct vm_area_struct *vma,
out_free_mpol:
mpol_put(vma_policy(new));
out_free_vma:
- kmem_cache_free(vm_area_cachep, new);
+ vm_area_free(new);
return err;
}
@@ -2984,7 +2984,7 @@ static int do_brk_flags(unsigned long addr, unsigned long len, unsigned long fla
/*
* create a vma struct for an anonymous mapping
*/
- vma = kmem_cache_zalloc(vm_area_cachep, GFP_KERNEL);
+ vma = vm_area_alloc();
if (!vma) {
vm_unacct_memory(len >> PAGE_SHIFT);
return -ENOMEM;
@@ -3202,7 +3202,7 @@ struct vm_area_struct *copy_vma(struct vm_area_struct **vmap,
}
*need_rmap_locks = (new_vma->vm_pgoff <= vma->vm_pgoff);
} else {
- new_vma = kmem_cache_alloc(vm_area_cachep, GFP_KERNEL);
+ new_vma = vm_area_dup(vma);
if (!new_vma)
goto out;
*new_vma = *vma;
@@ -3226,7 +3226,7 @@ struct vm_area_struct *copy_vma(struct vm_area_struct **vmap,
out_free_mempol:
mpol_put(vma_policy(new_vma));
out_free_vma:
- kmem_cache_free(vm_area_cachep, new_vma);
+ vm_area_free(new_vma);
out:
return NULL;
}
@@ -3350,7 +3350,7 @@ static struct vm_area_struct *__install_special_mapping(
int ret;
struct vm_area_struct *vma;
- vma = kmem_cache_zalloc(vm_area_cachep, GFP_KERNEL);
+ vma = vm_area_alloc();
if (unlikely(vma == NULL))
return ERR_PTR(-ENOMEM);
@@ -3376,7 +3376,7 @@ static struct vm_area_struct *__install_special_mapping(
return vma;
out:
- kmem_cache_free(vm_area_cachep, vma);
+ vm_area_free(vma);
return ERR_PTR(ret);
}
diff --git a/mm/nommu.c b/mm/nommu.c
index 4452d8bd9ae4..006e3fe65017 100644
--- a/mm/nommu.c
+++ b/mm/nommu.c
@@ -769,7 +769,7 @@ static void delete_vma(struct mm_struct *mm, struct vm_area_struct *vma)
if (vma->vm_file)
fput(vma->vm_file);
put_nommu_region(vma->vm_region);
- kmem_cache_free(vm_area_cachep, vma);
+ vm_area_free(vma);
}
/*
@@ -1204,7 +1204,7 @@ unsigned long do_mmap(struct file *file,
if (!region)
goto error_getting_region;
- vma = kmem_cache_zalloc(vm_area_cachep, GFP_KERNEL);
+ vma = vm_area_alloc();
if (!vma)
goto error_getting_vma;
@@ -1368,7 +1368,7 @@ error:
kmem_cache_free(vm_region_jar, region);
if (vma->vm_file)
fput(vma->vm_file);
- kmem_cache_free(vm_area_cachep, vma);
+ vm_area_free(vma);
return ret;
sharing_violation:
@@ -1469,7 +1469,7 @@ int split_vma(struct mm_struct *mm, struct vm_area_struct *vma,
if (!region)
return -ENOMEM;
- new = kmem_cache_alloc(vm_area_cachep, GFP_KERNEL);
+ new = vm_area_dup(vma);
if (!new) {
kmem_cache_free(vm_region_jar, region);
return -ENOMEM;
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-13 19:22:14 +0000