| Message ID | 20211208212211.2860249-2-surenb@google.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | [v4,1/3] mm: protect free_pgtables with mmap_lock write lock in exit_mmap | expand |
On Wed 08-12-21 13:22:10, Suren Baghdasaryan wrote: > Add comments for vm_operations_struct::close documenting locking > requirements for this callback and its callers. > > Signed-off-by: Suren Baghdasaryan <surenb@google.com> Acked-by: Michal Hocko <mhocko@suse.com> > --- > include/linux/mm.h | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/include/linux/mm.h b/include/linux/mm.h > index a7e4a9e7d807..b9b88ba7564b 100644 > --- a/include/linux/mm.h > +++ b/include/linux/mm.h > @@ -577,6 +577,10 @@ enum page_entry_size { > */ > struct vm_operations_struct { > void (*open)(struct vm_area_struct * area); > + /** > + * @close: Called when the VMA is being removed from the MM. > + * Context: User context. May sleep. Caller holds mmap_lock. > + */ > void (*close)(struct vm_area_struct * area); > /* Called any time before splitting to check if it's allowed */ > int (*may_split)(struct vm_area_struct *area, unsigned long addr); > -- > 2.34.1.400.ga245620fadb-goog
diff --git a/include/linux/mm.h b/include/linux/mm.h index a7e4a9e7d807..b9b88ba7564b 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -577,6 +577,10 @@ enum page_entry_size { */ struct vm_operations_struct { void (*open)(struct vm_area_struct * area); + /** + * @close: Called when the VMA is being removed from the MM. + * Context: User context. May sleep. Caller holds mmap_lock. + */ void (*close)(struct vm_area_struct * area); /* Called any time before splitting to check if it's allowed */ int (*may_split)(struct vm_area_struct *area, unsigned long addr);
Add comments for vm_operations_struct::close documenting locking requirements for this callback and its callers. Signed-off-by: Suren Baghdasaryan <surenb@google.com> --- include/linux/mm.h | 4 ++++ 1 file changed, 4 insertions(+)