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ocfs2/refcounttree: add the missing NULL check of the return value of find_or_create_page() 

Add the missing NULL check of the return value of find_or_create_page() in
function ocfs2_duplicate_clusters_by_page().

[akpm@linux-foundation.org: fix layout, per Joel]
Signed-off-by: Gu Zheng <guz.fnst@cn.fujitsu.com>
Acked-by: Joel Becker <jlbec@evilplan.org>
Cc: Mark Fasheh <mfasheh@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Gu Zheng 2013-07-31 13:53:29 -07:00 committed by Linus Torvalds
parent 3964acd0db
commit 62c610460d
1 changed files with 5 additions and 0 deletions
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5
fs/ocfs2/refcounttree.c
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@ -2965,6 +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