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authorLiam R. Howlett <Liam.Howlett@Oracle.com>2023-01-20 11:26:27 -0500
committerAndrew Morton <akpm@linux-foundation.org>2023-02-09 16:51:34 -0800
commita27a11f92fe2bb1c02c8bba0a8315f9b7ad3b396 (patch)
tree373d880523affd32a42f282333ac589107dd7790 /mm/mremap.c
parent076f16bf7698fae4b27030238998474a21d2233c (diff)
mm/mremap: 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/20230120162650.984577-27-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/mremap.c')
-rw-r--r--mm/mremap.c11
1 files changed, 7 insertions, 4 deletions
diff --git a/mm/mremap.c b/mm/mremap.c
index 3cc64c3f8bdb..f161516ab3c1 100644
--- a/mm/mremap.c
+++ b/mm/mremap.c
@@ -1018,6 +1018,7 @@ SYSCALL_DEFINE5(mremap, unsigned long, addr, unsigned long, old_len,
unsigned long extension_end = addr + new_len;
pgoff_t extension_pgoff = vma->vm_pgoff +
((extension_start - vma->vm_start) >> PAGE_SHIFT);
+ VMA_ITERATOR(vmi, mm, extension_start);
if (vma->vm_flags & VM_ACCOUNT) {
if (security_vm_enough_memory_mm(mm, pages)) {
@@ -1042,10 +1043,12 @@ SYSCALL_DEFINE5(mremap, unsigned long, addr, unsigned long, old_len,
* when a vma would be actually removed due to a merge.
*/
if (!vma->vm_ops || !vma->vm_ops->close) {
- vma = vma_merge(mm, vma, extension_start, extension_end,
- vma->vm_flags, vma->anon_vma, vma->vm_file,
- extension_pgoff, vma_policy(vma),
- vma->vm_userfaultfd_ctx, anon_vma_name(vma));
+ vma = vmi_vma_merge(&vmi, mm, vma,
+ extension_start, extension_end,
+ vma->vm_flags, vma->anon_vma,
+ vma->vm_file, extension_pgoff,
+ vma_policy(vma), vma->vm_userfaultfd_ctx,
+ anon_vma_name(vma));
} else if (vma_adjust(vma, vma->vm_start, addr + new_len,
vma->vm_pgoff, NULL)) {
vma = NULL;