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Diffstat (limited to 'drivers/md/dm-cache-policy-smq.c')
-rw-r--r--drivers/md/dm-cache-policy-smq.c28
1 files changed, 18 insertions, 10 deletions
diff --git a/drivers/md/dm-cache-policy-smq.c b/drivers/md/dm-cache-policy-smq.c
index 493a8715dc8f..8bd2ad743d9a 100644
--- a/drivers/md/dm-cache-policy-smq.c
+++ b/drivers/md/dm-cache-policy-smq.c
@@ -857,7 +857,13 @@ struct smq_policy {
struct background_tracker *bg_work;
- bool migrations_allowed;
+ bool migrations_allowed:1;
+
+ /*
+ * If this is set the policy will try and clean the whole cache
+ * even if the device is not idle.
+ */
+ bool cleaner:1;
};
/*----------------------------------------------------------------*/
@@ -1138,7 +1144,7 @@ static bool clean_target_met(struct smq_policy *mq, bool idle)
* Cache entries may not be populated. So we cannot rely on the
* size of the clean queue.
*/
- if (idle) {
+ if (idle || mq->cleaner) {
/*
* We'd like to clean everything.
*/
@@ -1722,11 +1728,9 @@ static void calc_hotspot_params(sector_t origin_size,
*hotspot_block_size /= 2u;
}
-static struct dm_cache_policy *__smq_create(dm_cblock_t cache_size,
- sector_t origin_size,
- sector_t cache_block_size,
- bool mimic_mq,
- bool migrations_allowed)
+static struct dm_cache_policy *
+__smq_create(dm_cblock_t cache_size, sector_t origin_size, sector_t cache_block_size,
+ bool mimic_mq, bool migrations_allowed, bool cleaner)
{
unsigned int i;
unsigned int nr_sentinels_per_queue = 2u * NR_CACHE_LEVELS;
@@ -1813,6 +1817,7 @@ static struct dm_cache_policy *__smq_create(dm_cblock_t cache_size,
goto bad_btracker;
mq->migrations_allowed = migrations_allowed;
+ mq->cleaner = cleaner;
return &mq->policy;
@@ -1836,21 +1841,24 @@ static struct dm_cache_policy *smq_create(dm_cblock_t cache_size,
sector_t origin_size,
sector_t cache_block_size)
{
- return __smq_create(cache_size, origin_size, cache_block_size, false, true);
+ return __smq_create(cache_size, origin_size, cache_block_size,
+ false, true, false);
}
static struct dm_cache_policy *mq_create(dm_cblock_t cache_size,
sector_t origin_size,
sector_t cache_block_size)
{
- return __smq_create(cache_size, origin_size, cache_block_size, true, true);
+ return __smq_create(cache_size, origin_size, cache_block_size,
+ true, true, false);
}
static struct dm_cache_policy *cleaner_create(dm_cblock_t cache_size,
sector_t origin_size,
sector_t cache_block_size)
{
- return __smq_create(cache_size, origin_size, cache_block_size, false, false);
+ return __smq_create(cache_size, origin_size, cache_block_size,
+ false, false, true);
}
/*----------------------------------------------------------------*/