Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-udf-2.6

* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-udf-2.6:
  udf: Fix loading of VAT inode when drive wrongly reports number of recorded blocks

1 files changed, 12 insertions, 0 deletions

diff --git a/fs/udf/super.c b/fs/udf/super.c
index 6832135159b6..9d1b8c2e6c45 100644
--- a/fs/udf/super.c
+++ b/fs/udf/super.c
@@ -1087,11 +1087,23 @@ static int udf_load_vat(struct super_block *sb, int p_index, int type1_index)
         struct udf_inode_info *vati;
         uint32_t pos;
         struct virtualAllocationTable20 *vat20;
+        sector_t blocks = sb->s_bdev->bd_inode->i_size >> sb->s_blocksize_bits;
 
         /* VAT file entry is in the last recorded block */
         ino.partitionReferenceNum = type1_index;
         ino.logicalBlockNum = sbi->s_last_block - map->s_partition_root;
         sbi->s_vat_inode = udf_iget(sb, &ino);
+        if (!sbi->s_vat_inode &&
+            sbi->s_last_block != blocks - 1) {
+                printk(KERN_NOTICE "UDF-fs: Failed to read VAT inode from the"
+                       " last recorded block (%lu), retrying with the last "
+                       "block of the device (%lu).\n",
+                       (unsigned long)sbi->s_last_block,
+                       (unsigned long)blocks - 1);
+                ino.partitionReferenceNum = type1_index;
+                ino.logicalBlockNum = blocks - 1 - map->s_partition_root;
+                sbi->s_vat_inode = udf_iget(sb, &ino);
+        }
         if (!sbi->s_vat_inode)
                 return 1;