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-rw-r--r--fs/udf/inode.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/udf/inode.c b/fs/udf/inode.c
index 062b7925bca..982ce05c87e 100644
--- a/fs/udf/inode.c
+++ b/fs/udf/inode.c
@@ -265,6 +265,7 @@ int udf_expand_file_adinicb(struct inode *inode)
.nr_to_write = 1,
};
+ WARN_ON_ONCE(!mutex_is_locked(&inode->i_mutex));
if (!iinfo->i_lenAlloc) {
if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_USE_SHORT_AD))
iinfo->i_alloc_type = ICBTAG_FLAG_AD_SHORT;