[XFS] kill xfs_iocore_t

xfs_iocore_t is a structure embedded in xfs_inode. Except for one field it
just duplicates fields already in xfs_inode, and there is nothing this
abstraction buys us on XFS/Linux. This patch removes it and shrinks source
and binary size of xfs aswell as shrinking the size of xfs_inode by 60/44
bytes in debug/non-debug builds.

SGI-PV: 970852
SGI-Modid: xfs-linux-melb:xfs-kern:29754a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Tim Shimmin <tes@sgi.com>
diff --git a/fs/xfs/linux-2.6/xfs_aops.c b/fs/xfs/linux-2.6/xfs_aops.c
index d20df39..36dadc4 100644
--- a/fs/xfs/linux-2.6/xfs_aops.c
+++ b/fs/xfs/linux-2.6/xfs_aops.c
@@ -163,7 +163,7 @@
 /*
  * Update on-disk file size now that data has been written to disk.
  * The current in-memory file size is i_size.  If a write is beyond
- * eof io_new_size will be the intended file size until i_size is
+ * eof i_new_size will be the intended file size until i_size is
  * updated.  If this write does not extend all the way to the valid
  * file size then restrict this update to the end of the write.
  */
@@ -185,7 +185,7 @@
 
 	xfs_ilock(ip, XFS_ILOCK_EXCL);
 
-	isize = MAX(ip->i_size, ip->i_iocore.io_new_size);
+	isize = MAX(ip->i_size, ip->i_new_size);
 	isize = MIN(isize, bsize);
 
 	if (ip->i_d.di_size < isize) {