From: Joe Thornber <ejt@redhat.com>
Date: Fri, 20 Feb 2015 13:54:14 +0000 (+0000)
Subject: dm cache policy mq: remove unused generation member of struct entry
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=fdecee3224d90e51c611198baeb0c38e568ca0e8;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

dm cache policy mq: remove unused generation member of struct entry

Remove to stop wasting memory.

Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
---

diff --git a/drivers/md/dm-cache-policy-mq.c b/drivers/md/dm-cache-policy-mq.c
index 97b14309df90..6bfb39411fa9 100644
--- a/drivers/md/dm-cache-policy-mq.c
+++ b/drivers/md/dm-cache-policy-mq.c
@@ -253,7 +253,6 @@ struct entry {
 	 */
 	bool dirty:1;
 	unsigned hit_count;
-	unsigned generation;
 };
 
 /*
@@ -744,7 +743,6 @@ static int pre_cache_to_cache(struct mq_policy *mq, struct entry *e,
 	new_e->oblock = e->oblock;
 	new_e->dirty = false;
 	new_e->hit_count = e->hit_count;
-	new_e->generation = e->generation;
 
 	del(mq, e);
 	free_entry(&mq->pre_cache_pool, e);
@@ -796,7 +794,6 @@ static void insert_in_pre_cache(struct mq_policy *mq,
 	e->dirty = false;
 	e->oblock = oblock;
 	e->hit_count = 1;
-	e->generation = mq->generation;
 	push(mq, e);
 }
 
@@ -829,7 +826,6 @@ static void insert_in_cache(struct mq_policy *mq, dm_oblock_t oblock,
 	e->oblock = oblock;
 	e->dirty = false;
 	e->hit_count = 1;
-	e->generation = mq->generation;
 	push(mq, e);
 
 	result->cblock = infer_cblock(&mq->cache_pool, e);
@@ -1026,7 +1022,6 @@ static int mq_load_mapping(struct dm_cache_policy *p,
 	e->oblock = oblock;
 	e->dirty = false;	/* this gets corrected in a minute */
 	e->hit_count = hint_valid ? hint : 1;
-	e->generation = mq->generation;
 	push(mq, e);
 
 	return 0;