Note: this list is generated by pattern matching, so it may include some functions that are not actually implementations of this hook.

date_field_update in core/modules/date/date.field.inc
Implements hook_field_update().
entityreference_field_update in core/modules/entityreference/entityreference.module
Implements hook_field_update().
field_test_field_update in core/modules/field/tests/field_test/field_test.field.inc
Implements hook_field_update().
file_field_update in core/modules/file/file.field.inc
Implements hook_field_update().
image_field_update in core/modules/image/image.field.inc
Implements hook_field_update().
link_field_update in core/modules/link/link.module
Implements hook_field_update().