NTFS: Fix serious data corruption issue when writing.

      Many thanks to Alberto Patino for testing and reporting the data
      corruption.  And many apologies for corrupting his partition.

Signed-off-by: Anton Altaparmakov <aia21@cantab.net>

diff --git a/fs/ntfs/file.c b/fs/ntfs/file.c
index 5fb341a16b52ccb68601fdcd147052b698bfce85..a142bf3ba1a57f22cbe4d0ea3db472d115bd7c9a 100644 (file)
--- a/fs/ntfs/file.c
+++ b/fs/ntfs/file.c
@@ -787,6 +787,7 @@ retry_remap:
                                vcn_len = rl[1].vcn - vcn;
                                lcn_block = lcn << (vol->cluster_size_bits -
                                                blocksize_bits);
+                               cdelta = 0;
                                /*
                                 * If the number of remaining clusters in the
                                 * @pages is smaller or equal to the number of