diff options
| author | Suren Baghdasaryan <surenb@google.com> | 2023-02-27 09:36:21 -0800 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-04-05 20:02:59 -0700 |
| commit | 457f67be5910a2b5f1fda8af06bfe4d3492a0a4f (patch) | |
| tree | d28c0949fd9211d20dfbe3d50a1e8ed38470e05a /include/linux/mm_types.h | |
| parent | eeff9a5d47f89bc641034fea05501c8a6de131cb (diff) | |
mm: introduce vma detached flag
Per-vma locking mechanism will search for VMA under RCU protection and
then after locking it, has to ensure it was not removed from the VMA tree
after we found it. To make this check efficient, introduce a
vma->detached flag to mark VMAs which were removed from the VMA tree.
Link: https://lkml.kernel.org/r/20230227173632.3292573-23-surenb@google.com
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'include/linux/mm_types.h')
| -rw-r--r-- | include/linux/mm_types.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h index 843a45893991..3248ae45cb2e 100644 --- a/include/linux/mm_types.h +++ b/include/linux/mm_types.h @@ -506,6 +506,9 @@ struct vm_area_struct { #ifdef CONFIG_PER_VMA_LOCK int vm_lock_seq; struct rw_semaphore lock; + + /* Flag to indicate areas detached from the mm->mm_mt tree */ + bool detached; #endif /* |