[XFS] Put the correct offset in dirent d_off

The recent filldir regression fix was not putting the correct d_off in
each dirent. This was resulting in incorrect cookies being passed to dmapi
ioctls and the wrong offset appearing in the dirents. readdir was
unaffected as the filp->f_pos was being updated with the correct offset
and this was being written into the last dirent in each buffer. Fix the
XFS code to do the right thing.

SGI-PV: 973746
SGI-Modid: xfs-linux-melb:xfs-kern:30240a

Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>

1 files changed, 2 insertions, 4 deletions

diff --git a/fs/xfs/xfs_dir2_block.c b/fs/xfs/xfs_dir2_block.c
index c171767e242a..a5f4f4fb8868 100644
--- a/fs/xfs/xfs_dir2_block.c
+++ b/fs/xfs/xfs_dir2_block.c
@@ -508,7 +508,7 @@ xfs_dir2_block_getdents(
                         continue;
 
                 cook = xfs_dir2_db_off_to_dataptr(mp, mp->m_dirdatablk,
-                                                    ptr - (char *)block);
+                                            (char *)dep - (char *)block);
                 ino = be64_to_cpu(dep->inumber);
 #if XFS_BIG_INUMS
                 ino += mp->m_inoadd;
@@ -519,9 +519,7 @@ xfs_dir2_block_getdents(
                  */
                 if (filldir(dirent, dep->name, dep->namelen, cook,
                             ino, DT_UNKNOWN)) {
-                        *offset = xfs_dir2_db_off_to_dataptr(mp,
-                                        mp->m_dirdatablk,
-                                        (char *)dep - (char *)block);
+                        *offset = cook;
                         xfs_da_brelse(NULL, bp);
                         return 0;
                 }