master - libdm-stats: move no regions warning after dm_stats_list()

[Bryn Reeves]

Gitweb:        https://sourceware.org/git/?p=lvm2.git;a=commitdiff;h=19f2105b87773047854ef1...
Commit:        19f2105b87773047854ef172de8fc48da110b2fa
Parent:        420af27f088a3808816ba3ab5b47dfa400fef308
Author:        Bryn M. Reeves 
AuthorDate:    Thu Nov 1 16:47:56 2018 +0000
Committer:     Bryn M. Reeves 
CommitterDate: Thu Nov 1 16:59:56 2018 +0000

libdm-stats: move no regions warning after dm_stats_list()

It doesn't make sense to test or warn about the region count until
the stats handle has been listed: at this point it may or may not
contain valid information (but is guaranteed to be correct after
the list).
---
 libdm/libdm-stats.c |   10 +++++-----
 1 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/libdm/libdm-stats.c b/libdm/libdm-stats.c
index 0143957..ca46d9a 100644
--- a/libdm/libdm-stats.c
+++ b/libdm/libdm-stats.c
@@ -2338,11 +2338,6 @@ int dm_stats_populate(struct dm_stats *dms, const char *program_id,
    	return 0;
    }

-	if (!dms->nr_regions) {
-		log_error("No regions registered.");
-		return 0;
-	}
-
    /* allow zero-length program_id for populate */
    if (!program_id)
    	program_id = dms->program_id;
@@ -2354,6 +2349,11 @@ int dm_stats_populate(struct dm_stats *dms, const char *program_id,
    	goto_bad;
    }

+	if (!dms->nr_regions) {
+		log_verbose("No stats regions registered: %s", dms->name);
+		return 0;
+	}
+
    dms->walk_flags = DM_STATS_WALK_REGION;
    dm_stats_walk_start(dms);
    do {