xfs: remove block number from inode lookup code

The block number comes from bulkstat based inode lookups to shortcut
the mapping calculations. We ar enot able to trust anything from
bulkstat, so drop the block number as well so that the correct
lookups and mappings are always done.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>

1 files changed, 0 insertions, 16 deletions

diff --git a/fs/xfs/xfs_ialloc.c b/fs/xfs/xfs_ialloc.c
index d8fd36685eb9..c7142a064c48 100644
--- a/fs/xfs/xfs_ialloc.c
+++ b/fs/xfs/xfs_ialloc.c
@@ -1355,22 +1355,6 @@ xfs_imap(
         }
 
         /*
-         * If we get a block number passed we can use it to
-         * find the buffer easily.
-         */
-        if (imap->im_blkno) {
-                offset = XFS_INO_TO_OFFSET(mp, ino);
-                ASSERT(offset < mp->m_sb.sb_inopblock);
-
-                cluster_agbno = xfs_daddr_to_agbno(mp, imap->im_blkno);
-                offset += (agbno - cluster_agbno) * mp->m_sb.sb_inopblock;
-
-                imap->im_len = XFS_FSB_TO_BB(mp, blks_per_cluster);
-                imap->im_boffset = (ushort)(offset << mp->m_sb.sb_inodelog);
-                return 0;
-        }
-
-        /*
          * If the inode chunks are aligned then use simple maths to
          * find the location. Otherwise we have to do a btree
          * lookup to find the location.