Messages in this thread Patch in this message | | | From | Liam Howlett <> | Subject | [PATCH v2 42/44] mm/mmap: Convert do_brk_flags() to use vma_prepare() and vma_complete() | Date | Thu, 5 Jan 2023 19:16:05 +0000 |
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From: "Liam R. Howlett" <Liam.Howlett@Oracle.com>
Use the abstracted vma locking for do_brk_flags()
Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> --- mm/mmap.c | 12 ++++-------- 1 file changed, 4 insertions(+), 8 deletions(-)
diff --git a/mm/mmap.c b/mm/mmap.c index 1e9b8eb00d45..6dd34e5ff1f7 100644 --- a/mm/mmap.c +++ b/mm/mmap.c @@ -2979,6 +2979,7 @@ static int do_brk_flags(struct vma_iterator *vmi, struct vm_area_struct *vma, unsigned long addr, unsigned long len, unsigned long flags) { struct mm_struct *mm = current->mm; + struct vma_prepare vp; validate_mm_mt(mm); /* @@ -3006,18 +3007,13 @@ static int do_brk_flags(struct vma_iterator *vmi, struct vm_area_struct *vma, goto unacct_fail; vma_adjust_trans_huge(vma, vma->vm_start, addr + len, 0); - if (vma->anon_vma) { - anon_vma_lock_write(vma->anon_vma); - anon_vma_interval_tree_pre_update_vma(vma); - } + init_vma_prep(&vp, vma); + vma_prepare(&vp); vma->vm_end = addr + len; vma->vm_flags |= VM_SOFTDIRTY; vma_iter_store(vmi, vma); - if (vma->anon_vma) { - anon_vma_interval_tree_post_update_vma(vma); - anon_vma_unlock_write(vma->anon_vma); - } + vma_complete(&vp, vmi, mm); khugepaged_enter_vma(vma, flags); goto out; } -- 2.35.1
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