[PATCH] UDF: During mount free lvid_bh before rescanning with different blocksize

From: Ashish Sangwan
Date: Sat Jul 21 2012 - 07:05:59 EST

If s_lvid_bh is not freed and set to NULL before re-scanning partition
with default block size, we might end up using wrong lvid in case
s_lvid_bh is not updated in udf_load_logicalvolint during rescan.

Signed-off-by: Ashish Sangwan <ashish.sangwan2@xxxxxxxxx>
Signed-off-by: Namjae Jeon <linkinjeon@xxxxxxxxx>

fs/udf/super.c | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/fs/udf/super.c b/fs/udf/super.c
index ac8a348..4a95c56 100644
--- a/fs/udf/super.c
+++ b/fs/udf/super.c
@@ -1961,6 +1961,8 @@ static int udf_fill_super(struct super_block *sb, void *options, int silent)
if (!silent)
pr_notice("Rescanning with blocksize %d\n",
+ brelse(sbi->s_lvid_bh);
+ sbi->s_lvid_bh = NULL;
uopt.blocksize = UDF_DEFAULT_BLOCKSIZE;
ret = udf_load_vrs(sb, &uopt, silent, &fileset);

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