[Cluster-devel] [PATCH v3 08/20] mm: ensure that we set mapping error if writeout() fails

[Jan Kara]

On Mon 24-04-17 09:22:47, Jeff Layton wrote:
> If writepage fails during a page migration, then we need to ensure that
> fsync will see it by flagging the mapping.
> 
> Signed-off-by: Jeff Layton <jlayton at redhat.com>

Looks good to me. You can add:

Reviewed-by: Jan Kara <jack at suse.cz>

								Honza
> ---
>  mm/migrate.c | 6 +++++-
>  1 file changed, 5 insertions(+), 1 deletion(-)
> 
> diff --git a/mm/migrate.c b/mm/migrate.c
> index 738f1d5f8350..3a59830bdae2 100644
> --- a/mm/migrate.c
> +++ b/mm/migrate.c
> @@ -792,7 +792,11 @@ static int writeout(struct address_space *mapping, struct page *page)
>  		/* unlocked. Relock */
>  		lock_page(page);
>  
> -	return (rc < 0) ? -EIO : -EAGAIN;
> +	if (rc < 0) {
> +		mapping_set_error(mapping, rc);
> +		return -EIO;
> +	}
> +	return -EAGAIN;
>  }
>  
>  /*
> -- 
> 2.9.3
> 
> 
-- 
Jan Kara <jack at suse.com>
SUSE Labs, CR