[XFS] When flushing inodes in to free log space, make the flush async rather

than delayed write.

SGI Modid: 2.5.x-xfs:slinx:149418a

fs/xfs/xfs_inode_item.c

@@ -879,7 +879,7 @@ xfs_inode_item_push(
 	 * Write out the inode.  The completion routine ('iflush_done') will
 	 * pull it from the AIL, mark it clean, unlock the flush lock.
 	 */
-	(void) xfs_iflush(ip, XFS_IFLUSH_DELWRI);
+	(void) xfs_iflush(ip, XFS_IFLUSH_ASYNC);
 	xfs_iunlock(ip, XFS_ILOCK_SHARED);
 
 	return;