NTFS: - Split ntfs_map_runlist() into ntfs_map_runlist() and a non-locking

	helper ntfs_map_runlist_nolock() which is used by ntfs_map_runlist().
	This allows us to map runlist fragments with the runlist lock already
	held without having to drop and reacquire it around the call.  Adapt
	all callers.
      - Change ntfs_find_vcn() to ntfs_find_vcn_nolock() which takes a locked
	runlist.  This allows us to find runlist elements with the runlist
	lock already held without having to drop and reacquire it around the
	call.  Adapt all callers.

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

1 files changed, 9 insertions, 0 deletions

diff --git a/fs/ntfs/ChangeLog b/fs/ntfs/ChangeLog
index b40c334e616f..9d42393c16c0 100644
--- a/fs/ntfs/ChangeLog
+++ b/fs/ntfs/ChangeLog
@@ -63,6 +63,15 @@ ToDo/Notes:
         - Fix a bug in fs/ntfs/runlist.c::ntfs_mapping_pairs_decompress() in
           the creation of the unmapped runlist element for the base attribute
           extent.
+        - Split ntfs_map_runlist() into ntfs_map_runlist() and a non-locking
+          helper ntfs_map_runlist_nolock() which is used by ntfs_map_runlist().
+          This allows us to map runlist fragments with the runlist lock already
+          held without having to drop and reacquire it around the call.  Adapt
+          all callers.
+        - Change ntfs_find_vcn() to ntfs_find_vcn_nolock() which takes a locked
+          runlist.  This allows us to find runlist elements with the runlist
+          lock already held without having to drop and reacquire it around the
+          call.  Adapt all callers.
 
 2.1.22 - Many bug and race fixes and error handling improvements.