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Date:	Sat, 07 May 2011 16:54:27 -0700
From:	Allison Henderson <achender@...ux.vnet.ibm.com>
To:	Ext4 Developers List <linux-ext4@...r.kernel.org>
CC:	Jan Kara <jack@...e.cz>
Subject: [PATCH 1/1] Null Pointer when make_indexed_dir returns -ENOSPC

Fix for a null pointer bug found while running punch hole tests

Signed-off-by: Allison Henderson <achender@...ibm.com>
---
:100644 100644 3c7a06e... 3302a6c... M	fs/ext4/namei.c
 fs/ext4/namei.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
index 3c7a06e..3302a6c 100644
--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -1422,7 +1422,8 @@ static int make_indexed_dir(handle_t *handle, struct dentry *dentry,
 		 */
 		ext4_mark_inode_dirty(handle, dir);
 		ext4_handle_dirty_metadata(handle, dir, frame->bh);
-		ext4_handle_dirty_metadata(handle, dir, bh);
+		if (bh)
+			ext4_handle_dirty_metadata(handle, dir, bh);
 		dx_release(frames);
 		return retval;
 	}
-- 
1.7.1

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