switch elf_core_write_extra_data() to dump_emit()

Signed-off-by: Al Viro <[email protected]>
diff --git a/include/linux/elfcore.h b/include/linux/elfcore.h
index 1b92a8c..698d51a 100644
--- a/include/linux/elfcore.h
+++ b/include/linux/elfcore.h
@@ -67,7 +67,7 @@
 extern int
 elf_core_write_extra_phdrs(struct coredump_params *cprm, loff_t offset);
 extern int
-elf_core_write_extra_data(struct file *file, size_t *size, unsigned long limit);
+elf_core_write_extra_data(struct coredump_params *cprm);
 extern size_t elf_core_extra_data_size(void);
 
 #endif /* _LINUX_ELFCORE_H */