NTFS: Complete the previous fix for the unset device when mapping buffers

for  mft record writing.  I had missed the writepage based mft record
      write code path.

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

fs/ntfs/ChangeLog

@@ -175,7 +175,7 @@ ToDo/Notes:
 	  the ntfs inode in memory if present.  Also, the ntfs inode has its
 	  own locking so it does not matter if the vfs inode is locked.
 	- Fix bug in mft record writing where we forgot to set the device in
-	  the buffers when mapping them after the VM had discarded them
+	  the buffers when mapping them after the VM had discarded them.
 	  Thanks to Martin MOKREJŠ for the bug report.
 
 2.1.22 - Many bug and race fixes and error handling improvements.

fs/ntfs/aops.c

@@ -924,6 +924,7 @@ static int ntfs_write_mst_block(struct page *page,
 			LCN lcn;
 			unsigned int vcn_ofs;
 
+			bh->b_bdev = vol->sb->s_bdev;
 			/* Obtain the vcn and offset of the current block. */
 			vcn = (VCN)block << bh_size_bits;
 			vcn_ofs = vcn & vol->cluster_size_mask;