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authorLinus Torvalds <torvalds@linux-foundation.org>2018-07-22 01:24:03 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2018-07-22 01:24:03 +0300
commit490fc053865c9cc40f1085ef8a5504f5341f79d2 (patch)
tree95f2e6e189cdae1a5e638b7ea4e39502605eaaa8 /fs/exec.c
parent95faf6992df468f617edb788da8c21c6eed0dfa7 (diff)
downloadlinux-490fc053865c9cc40f1085ef8a5504f5341f79d2.tar.xz
mm: make vm_area_alloc() initialize core fields
Like vm_area_dup(), it initializes the anon_vma_chain head, and the basic mm pointer. The rest of the fields end up being different for different users, although the plan is to also initialize the 'vm_ops' field to a dummy entry. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/exec.c')
-rw-r--r--fs/exec.c4
1 files changed, 1 insertions, 3 deletions
diff --git a/fs/exec.c b/fs/exec.c
index 9bd83989ea25..72e961a62adb 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 = vm_area_alloc();
+ bprm->vma = vma = vm_area_alloc(mm);
if (!vma)
return -ENOMEM;
@@ -298,7 +298,6 @@ static int __bprm_mm_init(struct linux_binprm *bprm)
err = -EINTR;
goto err_free;
}
- vma->vm_mm = mm;
/*
* Place the stack at the largest stack address the architecture
@@ -311,7 +310,6 @@ static int __bprm_mm_init(struct linux_binprm *bprm)
vma->vm_start = vma->vm_end - PAGE_SIZE;
vma->vm_flags = VM_SOFTDIRTY | VM_STACK_FLAGS | VM_STACK_INCOMPLETE_SETUP;
vma->vm_page_prot = vm_get_page_prot(vma->vm_flags);
- INIT_LIST_HEAD(&vma->anon_vma_chain);
err = insert_vm_struct(mm, vma);
if (err)