[2.6-BK-URL] Urgent NTFS bug fix

[2.6-BK-URL] Urgent NTFS bug fix

[Anton Altaparmakov]

Hi Linus, please pull from

rsync://rsync.kernel.org/pub/scm/linux/kernel/git/aia21/ntfs-2.6.git/HEAD

This is an urgent NTFS bug fix which fixes the oops reported by Martin
MOKREJŠ.

Please apply before you release 2.6.13.  Thanks!

The diff style patch produced with git format-patch linux-2.6 is below.

Best regards,

        Anton
-- 
Anton Altaparmakov <aia21 at cam.ac.uk> (replace at with @)
Unix Support, Computing Service, University of Cambridge, CB2 3QH, UK
Linux NTFS maintainer / IRC: #ntfs on irc.freenode.net
WWW: http://linux-ntfs.sf.net/ & http://www-stu.christs.cam.ac.uk/~aia21/

[PATCH] NTFS: 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.
      Thanks to Martin MOKREJŠ for the bug report.

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

 fs/ntfs/ChangeLog |    3 +++
 fs/ntfs/mft.c     |    2 ++
 2 files changed, 5 insertions(+), 0 deletions(-)

e74589ac250e463973361774a90fee2c9d71da02
diff --git a/fs/ntfs/ChangeLog b/fs/ntfs/ChangeLog
--- a/fs/ntfs/ChangeLog
+++ b/fs/ntfs/ChangeLog
@@ -174,6 +174,9 @@ ToDo/Notes:
 	  fact that the vfs and ntfs inodes are one struct in memory to find
 	  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
+	  Thanks to Martin MOKREJŠ for the bug report.
 
 2.1.22 - Many bug and race fixes and error handling improvements.
 
diff --git a/fs/ntfs/mft.c b/fs/ntfs/mft.c
--- a/fs/ntfs/mft.c
+++ b/fs/ntfs/mft.c
@@ -533,6 +533,7 @@ int ntfs_sync_mft_mirror(ntfs_volume *vo
 			LCN lcn;
 			unsigned int vcn_ofs;
 
+			bh->b_bdev = vol->sb->s_bdev;
 			/* Obtain the vcn and offset of the current block. */
 			vcn = ((VCN)mft_no << vol->mft_record_size_bits) +
 					(block_start - m_start);
@@ -725,6 +726,7 @@ int write_mft_record_nolock(ntfs_inode *
 			LCN lcn;
 			unsigned int vcn_ofs;
 
+			bh->b_bdev = vol->sb->s_bdev;
 			/* Obtain the vcn and offset of the current block. */
 			vcn = ((VCN)ni->mft_no << vol->mft_record_size_bits) +
 					(block_start - m_start);