On Mon, Jul 08, 2013 at 03:52:53PM +0800, Gu Zheng wrote:
> Add the missing NULL check of the return value of find_or_create_page() in
> function ocfs2_duplicate_clusters_by_page().
>
> Signed-off-by: Gu Zheng <guz.f...@cn.fujitsu.com>
> ---
> fs/ocfs2/refcounttree.c | 6 +++++-
> 1 files changed, 5 insertions(+), 1 deletions(-)
>
> diff --git a/fs/ocfs2/refcounttree.c b/fs/ocfs2/refcounttree.c
> index 998b17e..456d0e4 100644
> --- a/fs/ocfs2/refcounttree.c
> +++ b/fs/ocfs2/refcounttree.c
> @@ -2965,7 +2965,11 @@ int ocfs2_duplicate_clusters_by_page(handle_t *handle,
> to = map_end & (PAGE_CACHE_SIZE - 1);
>
> page = find_or_create_page(mapping, page_index, GFP_NOFS);
> -
> + if (!page) {
> + ret = -ENOMEM;
> + mlog_errno(ret);
> + break;
> + }
> /*
> * In case PAGE_CACHE_SIZE <= CLUSTER_SIZE, This page
> * can't be dirtied before we CoW it out.
Put a blank line between the closing brace and the comment. Otherwise,
Acked-by: Joel Becker <jl...@evilplan.org>
Joel
> --
> 1.7.7
>
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