From: Liam R. Howlett Date: Fri, 20 Jan 2023 16:26:26 +0000 (-0500) Subject: mmap: use vmi version of vma_merge() X-Git-Tag: v6.6.7~3441^2~142 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=076f16bf7698fae4b27030238998474a21d2233c;p=platform%2Fkernel%2Flinux-starfive.git mmap: use vmi version of vma_merge() Use the vma iterator so that the iterator can be invalidated or updated to avoid each caller doing so. Link: https://lkml.kernel.org/r/20230120162650.984577-26-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett Signed-off-by: Andrew Morton --- diff --git a/mm/mmap.c b/mm/mmap.c index 2b588b831ead..8806bfbaa505 100644 --- a/mm/mmap.c +++ b/mm/mmap.c @@ -2690,8 +2690,9 @@ cannot_expand: * vma again as we may succeed this time. */ if (unlikely(vm_flags != vma->vm_flags && prev)) { - merge = vma_merge(mm, prev, vma->vm_start, vma->vm_end, vma->vm_flags, - NULL, vma->vm_file, vma->vm_pgoff, NULL, NULL_VM_UFFD_CTX, NULL); + merge = vmi_vma_merge(&vmi, mm, prev, vma->vm_start, + vma->vm_end, vma->vm_flags, NULL, vma->vm_file, + vma->vm_pgoff, NULL, NULL_VM_UFFD_CTX, NULL); if (merge) { /* * ->mmap() can change vma->vm_file and fput @@ -3232,6 +3233,7 @@ struct vm_area_struct *copy_vma(struct vm_area_struct **vmap, struct mm_struct *mm = vma->vm_mm; struct vm_area_struct *new_vma, *prev; bool faulted_in_anon_vma = true; + VMA_ITERATOR(vmi, mm, addr); validate_mm_mt(mm); /* @@ -3247,7 +3249,7 @@ struct vm_area_struct *copy_vma(struct vm_area_struct **vmap, if (new_vma && new_vma->vm_start < addr + len) return NULL; /* should never get here */ - new_vma = vma_merge(mm, prev, addr, addr + len, vma->vm_flags, + new_vma = vmi_vma_merge(&vmi, mm, prev, addr, addr + len, vma->vm_flags, vma->anon_vma, vma->vm_file, pgoff, vma_policy(vma), vma->vm_userfaultfd_ctx, anon_vma_name(vma)); if (new_vma) {