diff options
| author |   Linus Torvalds <torvalds@linux-foundation.org> | 2018-07-21 15:24:03 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-07-21 15:24:03 -0700 |
| commit | 490fc053865c9cc40f1085ef8a5504f5341f79d2 (patch) | |
| tree | 95f2e6e189cdae1a5e638b7ea4e39502605eaaa8 /arch/ia64/kernel/perfmon.c | |
| parent | mm: make vm_area_dup() actually copy the old vma data (diff) | |
| download | linux-dev-490fc053865c9cc40f1085ef8a5504f5341f79d2.tar.xz linux-dev-490fc053865c9cc40f1085ef8a5504f5341f79d2.zip | |
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 '')
| -rw-r--r-- | arch/ia64/kernel/perfmon.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/arch/ia64/kernel/perfmon.c b/arch/ia64/kernel/perfmon.c index e859246badca..46bff1661836 100644 --- a/arch/ia64/kernel/perfmon.c +++ b/arch/ia64/kernel/perfmon.c @@ -2278,17 +2278,15 @@ pfm_smpl_buffer_alloc(struct task_struct *task, struct file *filp, pfm_context_t DPRINT(("smpl_buf @%p\n", smpl_buf)); /* allocate vma */ - vma = vm_area_alloc(); + vma = vm_area_alloc(mm); if (!vma) { DPRINT(("Cannot allocate vma\n")); goto error_kmem; } - INIT_LIST_HEAD(&vma->anon_vma_chain); /* * partially initialize the vma for the sampling buffer */ - vma->vm_mm = mm; vma->vm_file = get_file(filp); vma->vm_flags = VM_READ|VM_MAYREAD|VM_DONTEXPAND|VM_DONTDUMP; vma->vm_page_prot = PAGE_READONLY; /* XXX may need to change */ |