udf: Set i_generation field

Currently UDF doesn't initialize i_generation in any way and thus NFS
can easily get reallocated inodes from stale file handles. Luckily UDF
already has a unique object identifier associated with each inode -
i_unique. Use that for initialization of i_generation.

Signed-off-by: Jan Kara <jack@suse.cz>

1 files changed, 1 insertions, 0 deletions

diff --git a/fs/udf/inode.c b/fs/udf/inode.c
index 3a44d9187aad..08598843288f 100644
--- a/fs/udf/inode.c
+++ b/fs/udf/inode.c
@@ -1484,6 +1484,7 @@ reread:
                 iinfo->i_lenAlloc = le32_to_cpu(efe->lengthAllocDescs);
                 iinfo->i_checkpoint = le32_to_cpu(efe->checkpoint);
         }
+        inode->i_generation = iinfo->i_unique;
 
         switch (fe->icbTag.fileType) {
         case ICBTAG_FILE_TYPE_DIRECTORY: