conditionally remove map_dev from find_free_devnum

map_dev can be slow so it is best to not call it when
not necessary.
The final test in "find_free_devnum" is not relevant when
udev is being used, so remove the test in that case.

Signed-off-by: NeilBrown <neilb@suse.de>

1 files changed, 1 insertions, 0 deletions

diff --git a/mdadm.h b/mdadm.h
index 7adf7d94..be760d26 100644
--- a/mdadm.h
+++ b/mdadm.h
@@ -1217,6 +1217,7 @@ extern char *conf_line(FILE *file);
 extern char *conf_word(FILE *file, int allow_key);
 extern void print_quoted(char *str);
 extern void print_escape(char *str);
+extern int use_udev(void);
 extern int conf_name_is_free(char *name);
 extern int conf_verify_devnames(struct mddev_ident *array_list);
 extern int devname_matches(char *name, char *match);