Subject: + ocfs2-refcounttree-add-the-missing-null-check-of-the-return-value-of-find_or_create_page.patch added to -mm tree
To: guz.fnst@xxxxxxxxxxxxxx,jlbec@xxxxxxxxxxxx,mfasheh@xxxxxxxx
From: akpm@xxxxxxxxxxxxxxxxxxxx
Date: Tue, 09 Jul 2013 15:22:34 -0700
The patch titled
Subject: ocfs2/refcounttree: add the missing NULL check of the return value of find_or_create_page()
has been added to the -mm tree. Its filename is
ocfs2-refcounttree-add-the-missing-null-check-of-the-return-value-of-find_or_create_page.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/ocfs2-refcounttree-add-the-missing-null-check-of-the-return-value-of-find_or_create_page.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/ocfs2-refcounttree-add-the-missing-null-check-of-the-return-value-of-find_or_create_page.patch
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------------------------------------------------------
From: Gu Zheng <guz.fnst@xxxxxxxxxxxxxx>
Subject: 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().
Signed-off-by: Gu Zheng <guz.fnst@xxxxxxxxxxxxxx>
Acked-by: Joel Becker <jlbec@xxxxxxxxxxxx>
Cc: Mark Fasheh <mfasheh@xxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/ocfs2/refcounttree.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff -puN fs/ocfs2/refcounttree.c~ocfs2-refcounttree-add-the-missing-null-check-of-the-return-value-of-find_or_create_page fs/ocfs2/refcounttree.c
--- a/fs/ocfs2/refcounttree.c~ocfs2-refcounttree-add-the-missing-null-check-of-the-return-value-of-find_or_create_page
+++ a/fs/ocfs2/refcounttree.c
@@ -2965,7 +2965,11 @@ int ocfs2_duplicate_clusters_by_page(han
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.
_
Patches currently in -mm which might be from guz.fnst@xxxxxxxxxxxxxx are
origin.patch
linux-next.patch
ocfs2-refcounttree-add-the-missing-null-check-of-the-return-value-of-find_or_create_page.patch
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