xfs: remove iomap_delta

The iomap_delta field in struct xfs_iomap just contains the
difference between the offset passed to xfs_iomap and the
iomap_offset.  Just calculate it in the only caller that cares.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Alex Elder <aelder@sgi.com>

1 files changed, 4 insertions, 2 deletions

diff --git a/fs/xfs/linux-2.6/xfs_aops.c b/fs/xfs/linux-2.6/xfs_aops.c
index 49dec212da4..577d0b44873 100644
--- a/fs/xfs/linux-2.6/xfs_aops.c
+++ b/fs/xfs/linux-2.6/xfs_aops.c
@@ -1512,9 +1512,11 @@ __xfs_get_blocks(
 	}
 
 	if (direct || size > (1 << inode->i_blkbits)) {
-		ASSERT(iomap.iomap_bsize - iomap.iomap_delta > 0);
+		xfs_off_t iomap_delta = offset - iomap.iomap_offset;
+
+		ASSERT(iomap.iomap_bsize - iomap_delta > 0);
 		offset = min_t(xfs_off_t,
-				iomap.iomap_bsize - iomap.iomap_delta, size);
+				iomap.iomap_bsize - iomap_delta, size);
 		bh_result->b_size = (ssize_t)min_t(xfs_off_t, LONG_MAX, offset);
 	}