diff options
| author | Suren Baghdasaryan <surenb@google.com> | 2023-08-04 08:27:21 -0700 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-08-21 13:37:45 -0700 |
| commit | e727bfd5e73a35ecbc4a01a15c659b9fafaa97c0 (patch) | |
| tree | a49471600cde73c8b5114b24231d5a6619c8d640 /mm/memory.c | |
| parent | ce2fc5fffdfa9fc1412aff108afa102ddf82fd2b (diff) | |
mm: replace mmap with vma write lock assertions when operating on a vma
Vma write lock assertion always includes mmap write lock assertion and
additional vma lock checks when per-VMA locks are enabled. Replace
weaker mmap_assert_write_locked() assertions with stronger
vma_assert_write_locked() ones when we are operating on a vma which
is expected to be locked.
Link: https://lkml.kernel.org/r/20230804152724.3090321-4-surenb@google.com
Suggested-by: Jann Horn <jannh@google.com>
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Cc: Linus Torvalds <torvalds@linuxfoundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/memory.c')
| -rw-r--r-- | mm/memory.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/memory.c b/mm/memory.c index 1113ee625a94..039dcbbcc7d2 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -1312,7 +1312,7 @@ copy_page_range(struct vm_area_struct *dst_vma, struct vm_area_struct *src_vma) * Use the raw variant of the seqcount_t write API to avoid * lockdep complaining about preemptibility. */ - mmap_assert_write_locked(src_mm); + vma_assert_write_locked(src_vma); raw_write_seqcount_begin(&src_mm->write_protect_seq); } |