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dm zoned: prefer full zones for reclaim

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Prefer full zones when selecting the next zone for reclaim.

Signed-off-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Damien Le Moal <damien.lemoal@wdc.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
This commit is contained in:
Hannes Reinecke 2020-06-02 13:09:55 +02:00 committed by Mike Snitzer
parent 69875d443b
commit 2094045fe5
1 changed files with 8 additions and 1 deletions
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9
drivers/md/dm-zoned-metadata.c
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@ -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))