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Date:   Thu, 9 Jun 2022 14:46:11 +0200
From:   David Hildenbrand <david@...hat.com>
To:     "Matthew Wilcox (Oracle)" <willy@...radead.org>,
        linux-fsdevel@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, linux-block@...r.kernel.org,
        linux-aio@...ck.org, linux-btrfs@...r.kernel.org,
        linux-ext4@...r.kernel.org, linux-f2fs-devel@...ts.sourceforge.net,
        cluster-devel@...hat.com, linux-mm@...ck.org,
        linux-xfs@...r.kernel.org, linux-nfs@...r.kernel.org,
        linux-ntfs-dev@...ts.sourceforge.net, ocfs2-devel@....oracle.com,
        linux-mtd@...ts.infradead.org,
        virtualization@...ts.linux-foundation.org
Subject: Re: [PATCH v2 01/19] secretmem: Remove isolate_page

On 08.06.22 17:02, Matthew Wilcox (Oracle) wrote:
> The isolate_page operation is never called for filesystems, only
> for device drivers which call SetPageMovable.
> 
> Signed-off-by: Matthew Wilcox (Oracle) <willy@...radead.org>
> ---
>  mm/secretmem.c | 6 ------
>  1 file changed, 6 deletions(-)
> 
> diff --git a/mm/secretmem.c b/mm/secretmem.c
> index 206ed6b40c1d..1c7f1775b56e 100644
> --- a/mm/secretmem.c
> +++ b/mm/secretmem.c
> @@ -133,11 +133,6 @@ static const struct file_operations secretmem_fops = {
>  	.mmap		= secretmem_mmap,
>  };
>  
> -static bool secretmem_isolate_page(struct page *page, isolate_mode_t mode)
> -{
> -	return false;
> -}
> -
>  static int secretmem_migratepage(struct address_space *mapping,
>  				 struct page *newpage, struct page *page,
>  				 enum migrate_mode mode)
> @@ -155,7 +150,6 @@ const struct address_space_operations secretmem_aops = {
>  	.dirty_folio	= noop_dirty_folio,
>  	.free_folio	= secretmem_free_folio,
>  	.migratepage	= secretmem_migratepage,
> -	.isolate_page	= secretmem_isolate_page,
>  };
>  
>  static int secretmem_setattr(struct user_namespace *mnt_userns,

Reviewed-by: David Hildenbrand <david@...hat.com>

-- 
Thanks,

David / dhildenb

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