Re: [PATCH v5 03/13] mm/shmem: Support memfile_notifier

[Chao Peng]

On Mon, Apr 11, 2022 at 06:26:47PM +0300, Kirill A. Shutemov wrote:
> On Thu, Mar 10, 2022 at 10:09:01PM +0800, Chao Peng wrote:
> > diff --git a/mm/shmem.c b/mm/shmem.c
> > index 9b31a7056009..7b43e274c9a2 100644
> > --- a/mm/shmem.c
> > +++ b/mm/shmem.c
> > @@ -903,6 +903,28 @@ static struct folio *shmem_get_partial_folio(struct 
> > inode *inode, pgoff_t index)
> >     return page ? page_folio(page) : NULL;
> >  }
> >  
> > +static void notify_fallocate(struct inode *inode, pgoff_t start, pgoff_t 
> > end)
> > +{
> > +#ifdef CONFIG_MEMFILE_NOTIFIER
> > +   struct shmem_inode_info *info = SHMEM_I(inode);
> > +
> > +   memfile_notifier_fallocate(&info->memfile_notifiers, start, end);
> > +#endif
> 
> All these #ifdefs look ugly. Could you provide dummy memfile_* for
> !MEMFILE_NOTIFIER case?
Sure.

Chao
> 
> -- 
>  Kirill A. Shutemov