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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).
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@ -2338,11 +2338,6 @@ int dm_stats_populate(struct dm_stats *dms, const char *program_id,
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return 0;
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}
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if (!dms->nr_regions) {
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log_error("No regions registered.");
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return 0;
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}
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/* allow zero-length program_id for populate */
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if (!program_id)
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program_id = dms->program_id;
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@ -2354,6 +2349,11 @@ int dm_stats_populate(struct dm_stats *dms, const char *program_id,
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goto_bad;
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}
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if (!dms->nr_regions) {
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log_verbose("No stats regions registered: %s", dms->name);
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return 0;
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}
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dms->walk_flags = DM_STATS_WALK_REGION;
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dm_stats_walk_start(dms);
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do {
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