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authorHannes Reinecke <hare@suse.de>2020-05-19 11:14:21 +0300
committerMike Snitzer <snitzer@redhat.com>2020-05-21 00:09:50 +0300
commit90a9b8693f1b84a695864f2b416cba9bde107268 (patch)
tree3b024946f0aa53cfc4e1132ef2c9cd5cb9f58f31 /drivers/md/dm-zoned-metadata.c
parent34f5affd04c4a16d9df19c369bcec6e873e57ffe (diff)
downloadlinux-90a9b8693f1b84a695864f2b416cba9bde107268.tar.xz
dm zoned: reclaim random zones when idle
When the system is idle we should be starting reclaiming random zones, too. 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>
Diffstat (limited to 'drivers/md/dm-zoned-metadata.c')
-rw-r--r--drivers/md/dm-zoned-metadata.c13
1 files changed, 9 insertions, 4 deletions
diff --git a/drivers/md/dm-zoned-metadata.c b/drivers/md/dm-zoned-metadata.c
index 6c009a8b36a4..b5fd67eff046 100644
--- a/drivers/md/dm-zoned-metadata.c
+++ b/drivers/md/dm-zoned-metadata.c
@@ -1859,15 +1859,20 @@ static void dmz_wait_for_reclaim(struct dmz_metadata *zmd, struct dm_zone *zone)
/*
* Select a cache or random write zone for reclaim.
*/
-static struct dm_zone *dmz_get_rnd_zone_for_reclaim(struct dmz_metadata *zmd)
+static struct dm_zone *dmz_get_rnd_zone_for_reclaim(struct dmz_metadata *zmd,
+ bool idle)
{
struct dm_zone *dzone = NULL;
struct dm_zone *zone;
struct list_head *zone_list = &zmd->map_rnd_list;
/* If we have cache zones select from the cache zone list */
- if (zmd->nr_cache)
+ if (zmd->nr_cache) {
zone_list = &zmd->map_cache_list;
+ /* Try to relaim random zones, too, when idle */
+ if (idle && list_empty(zone_list))
+ zone_list = &zmd->map_rnd_list;
+ }
list_for_each_entry(zone, zone_list, link) {
if (dmz_is_buf(zone))
@@ -1901,7 +1906,7 @@ static struct dm_zone *dmz_get_seq_zone_for_reclaim(struct dmz_metadata *zmd)
/*
* Select a zone for reclaim.
*/
-struct dm_zone *dmz_get_zone_for_reclaim(struct dmz_metadata *zmd)
+struct dm_zone *dmz_get_zone_for_reclaim(struct dmz_metadata *zmd, bool idle)
{
struct dm_zone *zone;
@@ -1917,7 +1922,7 @@ struct dm_zone *dmz_get_zone_for_reclaim(struct dmz_metadata *zmd)
if (list_empty(&zmd->reserved_seq_zones_list))
zone = dmz_get_seq_zone_for_reclaim(zmd);
else
- zone = dmz_get_rnd_zone_for_reclaim(zmd);
+ zone = dmz_get_rnd_zone_for_reclaim(zmd, idle);
dmz_unlock_map(zmd);
return zone;