119 	size_t      filechunk = 0;  in kern_ioctl_file_extents()  local
149 	for (; offset < end; offset += filechunk) {  in kern_ioctl_file_extents()
152 			filechunk = 1 * 1024 * 1024 * 1024;  in kern_ioctl_file_extents()
153 			if (filechunk > (size_t)(end - offset)) {  in kern_ioctl_file_extents()
154 				filechunk = (size_t)(end - offset);  in kern_ioctl_file_extents()
156 			error = VNOP_BLOCKMAP(ref->vp, offset, filechunk, &blkno,  in kern_ioctl_file_extents()
157 			    &filechunk, NULL, VNODE_WRITE | VNODE_BLOCKMAP_NO_TRACK, NULL);  in kern_ioctl_file_extents()
167 			filechunk = (unsigned long)((ref->filelength > ULONG_MAX) ? ULONG_MAX: ref->filelength);  in kern_ioctl_file_extents()
172 			extent.length = filechunk;  in kern_ioctl_file_extents()
179 			pin.cp_extent.length = filechunk;  in kern_ioctl_file_extents()
187 			pin.cp_extent.length = filechunk;  in kern_ioctl_file_extents()
230 	size_t            filechunk = 0;  in kern_open_file_for_direct_io()  local
427 	for (; f_offset < ref->filelength; f_offset += filechunk) {  in kern_open_file_for_direct_io()
429 			filechunk = 1 * 1024 * 1024 * 1024;  in kern_open_file_for_direct_io()
432 			error = VNOP_BLOCKMAP(ref->vp, f_offset, filechunk, &blkno,  in kern_open_file_for_direct_io()
433 			    &filechunk, NULL, VNODE_WRITE | VNODE_BLOCKMAP_NO_TRACK, NULL);  in kern_open_file_for_direct_io()
443 			filechunk = f_offset ? 0 : (unsigned long)ref->filelength;  in kern_open_file_for_direct_io()
447 		while (physoffset < filechunk) {  in kern_open_file_for_direct_io()
452 			getphysreq.length = (filechunk - physoffset);  in kern_open_file_for_direct_io()