dm cache policy mq: simplify ability to promote sequential IO to the cache

[linux-2.6-microblaze.git] / drivers / md / dm-cache-policy-mq.c

diff --git a/drivers/md/dm-cache-policy-mq.c b/drivers/md/dm-cache-policy-mq.c
index 334d098..13f547a 100644 (file)
--- a/drivers/md/dm-cache-policy-mq.c
+++ b/drivers/md/dm-cache-policy-mq.c
@@ -865,7 +865,8 @@ static int map(struct mq_policy *mq, dm_oblock_t oblock,
        if (e && in_cache(mq, e))
                r = cache_entry_found(mq, e, result);
 
-       else if (iot_pattern(&mq->tracker) == PATTERN_SEQUENTIAL)
+       else if (mq->tracker.thresholds[PATTERN_SEQUENTIAL] &&
+                iot_pattern(&mq->tracker) == PATTERN_SEQUENTIAL)
                result->op = POLICY_MISS;
 
        else if (e)
@@ -1290,7 +1291,7 @@ bad_pre_cache_init:
 
 static struct dm_cache_policy_type mq_policy_type = {
        .name = "mq",
-       .version = {1, 2, 0},
+       .version = {1, 3, 0},
        .hint_size = 4,
        .owner = THIS_MODULE,
        .create = mq_create
@@ -1298,7 +1299,7 @@ static struct dm_cache_policy_type mq_policy_type = {
 
 static struct dm_cache_policy_type default_policy_type = {
        .name = "default",
-       .version = {1, 2, 0},
+       .version = {1, 3, 0},
        .hint_size = 4,
        .owner = THIS_MODULE,
        .create = mq_create,