xfs: fold dfops into the transaction

struct xfs_defer_ops has now been reduced to a single list_head. The
external dfops mechanism is unused and thus everywhere a (permanent)
transaction is accessible the associated dfops structure is as well.

Remove the xfs_defer_ops structure and fold the list_head into the
transaction. Also remove the last remnant of external dfops in
xfs_trans_dup().

Signed-off-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>

1 files changed, 0 insertions, 2 deletions

diff --git a/fs/xfs/libxfs/xfs_dir2.c b/fs/xfs/libxfs/xfs_dir2.c
index 4ea1fddb126f..229152cd1a24 100644
--- a/fs/xfs/libxfs/xfs_dir2.c
+++ b/fs/xfs/libxfs/xfs_dir2.c
@@ -424,7 +424,6 @@ xfs_dir_removename(
         int                     v;              /* type-checking value */
 
         ASSERT(S_ISDIR(VFS_I(dp)->i_mode));
-        ASSERT(tp->t_dfops);
         XFS_STATS_INC(dp->i_mount, xs_dir_remove);
 
         args = kmem_zalloc(sizeof(*args), KM_SLEEP | KM_NOFS);
@@ -483,7 +482,6 @@ xfs_dir_replace(
         int                     v;              /* type-checking value */
 
         ASSERT(S_ISDIR(VFS_I(dp)->i_mode));
-        ASSERT(tp->t_dfops);
 
         rval = xfs_dir_ino_validate(tp->t_mountp, inum);
         if (rval)