udf: add llseek method

UDF currently doesn't set a llseek method for regular files, which
means it will fall back to default_llseek.  This means no one can seek
beyond 2 Gigabytes on udf, and that there's not protection vs
the i_size updates from writers.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jan Kara <jack@suse.cz>

1 files changed, 1 insertions, 0 deletions

diff --git a/fs/udf/file.c b/fs/udf/file.c
index 0ed6e146a0d9..eb91f3b70320 100644
--- a/fs/udf/file.c
+++ b/fs/udf/file.c
@@ -211,6 +211,7 @@ const struct file_operations udf_file_operations = {
         .release                = udf_release_file,
         .fsync                  = udf_fsync_file,
         .splice_read            = generic_file_splice_read,
+        .llseek                 = generic_file_llseek,
 };
 
 const struct inode_operations udf_file_inode_operations = {