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| author | Jens Axboe <axboe@suse.de> | 2006-07-19 14:56:28 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@nelson.home.kernel.dk> | 2006-09-30 20:29:40 +0200 |
| commit | 981a79730d586335ef8f942c83bdf2b1de6d4e3d (patch) | |
| tree | 0dec9ba389ed1fbfb8adb842f86a27e9be643559 /block/cfq-iosched.c | |
| parent | 53b03744e5699832e6c5b04f2ec506d8b0c50c38 (diff) | |
| download | lwn-981a79730d586335ef8f942c83bdf2b1de6d4e3d.tar.gz lwn-981a79730d586335ef8f942c83bdf2b1de6d4e3d.zip | |
[PATCH] cfq-iosched: kill the empty_list
No point in having a place holder list just for empty queues, so remove
it. It's not used for anything other than to keep ->cfq_list busy.
Signed-off-by: Jens Axboe <axboe@suse.de>
Diffstat (limited to 'block/cfq-iosched.c')
| -rw-r--r-- | block/cfq-iosched.c | 10 |
1 files changed, 2 insertions, 8 deletions
diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c index c6e649f3cae7..6fb1613d44d7 100644 --- a/block/cfq-iosched.c +++ b/block/cfq-iosched.c @@ -82,11 +82,6 @@ struct cfq_data { unsigned int busy_queues; /* - * non-ordered list of empty cfqq's - */ - struct list_head empty_list; - - /* * cfqq lookup hash */ struct hlist_head *cfq_hash; @@ -136,7 +131,7 @@ struct cfq_queue { struct hlist_node cfq_hash; /* hash key */ unsigned int key; - /* on either rr or empty list of cfqd */ + /* member of the rr/busy/cur/idle cfqd list */ struct list_head cfq_list; /* sorted list of pending requests */ struct rb_root sort_list; @@ -417,7 +412,7 @@ cfq_del_cfqq_rr(struct cfq_data *cfqd, struct cfq_queue *cfqq) { BUG_ON(!cfq_cfqq_on_rr(cfqq)); cfq_clear_cfqq_on_rr(cfqq); - list_move(&cfqq->cfq_list, &cfqd->empty_list); + list_del_init(&cfqq->cfq_list); BUG_ON(!cfqd->busy_queues); cfqd->busy_queues--; @@ -1959,7 +1954,6 @@ static void *cfq_init_queue(request_queue_t *q, elevator_t *e) INIT_LIST_HEAD(&cfqd->busy_rr); INIT_LIST_HEAD(&cfqd->cur_rr); INIT_LIST_HEAD(&cfqd->idle_rr); - INIT_LIST_HEAD(&cfqd->empty_list); INIT_LIST_HEAD(&cfqd->cic_list); cfqd->cfq_hash = kmalloc_node(sizeof(struct hlist_head) * CFQ_QHASH_ENTRIES, GFP_KERNEL, q->node); |