From 2094045fe5b5dda98c4ec6cb1ac7b12ba4382856 Mon Sep 17 00:00:00 2001 From: Hannes Reinecke Date: Tue, 2 Jun 2020 13:09:55 +0200 Subject: [PATCH] dm zoned: prefer full zones for reclaim Prefer full zones when selecting the next zone for reclaim. Signed-off-by: Hannes Reinecke Reviewed-by: Damien Le Moal Signed-off-by: Mike Snitzer --- drivers/md/dm-zoned-metadata.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/drivers/md/dm-zoned-metadata.c b/drivers/md/dm-zoned-metadata.c index 0cb90799b8ce..59a34895f5a8 100644 --- a/drivers/md/dm-zoned-metadata.c +++ b/drivers/md/dm-zoned-metadata.c @@ -1941,7 +1941,7 @@ static struct dm_zone *dmz_get_rnd_zone_for_reclaim(struct dmz_metadata *zmd, unsigned int idx, bool idle) { struct dm_zone *dzone = NULL; - struct dm_zone *zone; + struct dm_zone *zone, *last = NULL; struct list_head *zone_list; /* If we have cache zones select from the cache zone list */ @@ -1958,6 +1958,13 @@ static struct dm_zone *dmz_get_rnd_zone_for_reclaim(struct dmz_metadata *zmd, dzone = zone->bzone; if (dzone->dev->dev_idx != idx) continue; + if (!last) { + last = dzone; + continue; + } + if (last->weight < dzone->weight) + continue; + dzone = last; } else dzone = zone; if (dmz_lock_zone_reclaim(dzone)) -- 2.34.1