[XFS] Add ail pointer into log items

Add an xfs_ail pointer to log items so that the log items can reference
the AIL directly during callbacks without needed a struct xfs_mount.

SGI-PV: 988143

SGI-Modid: xfs-linux-melb:xfs-kern:32352a

Signed-off-by: David Chinner <david@fromorbit.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
diff --git a/fs/xfs/xfs_inode_item.c b/fs/xfs/xfs_inode_item.c
index 291d30ad..47594f4 100644
--- a/fs/xfs/xfs_inode_item.c
+++ b/fs/xfs/xfs_inode_item.c
@@ -932,6 +932,7 @@
 	iip->ili_item.li_type = XFS_LI_INODE;
 	iip->ili_item.li_ops = &xfs_inode_item_ops;
 	iip->ili_item.li_mountp = mp;
+	iip->ili_item.li_ailp = mp->m_ail;
 	iip->ili_inode = ip;
 
 	/*