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| author | Jens Axboe <jens.axboe@oracle.com> | 2009-04-23 12:13:27 +0200 |
|---|---|---|
| committer | Jens Axboe <jens.axboe@oracle.com> | 2009-04-24 08:54:22 +0200 |
| commit | 26a2ac009c2b07e1959c8864ca23486c1c485587 (patch) | |
| tree | f3c0ae95578cd454f04dc48226b3b6f1ebd1d345 | |
| parent | 17d5c8ca7572124c9623045f24b0c21d4aa2b47f (diff) | |
| download | linux-26a2ac009c2b07e1959c8864ca23486c1c485587.tar.bz2 | |
cfq-iosched: clear ->prio_trees[] on cfqd alloc
Not strictly needed, but we should make it clear that we init the
rbtree roots here.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| -rw-r--r-- | block/cfq-iosched.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c index 7e13f04b5ed4..20a54b8e03e1 100644 --- a/block/cfq-iosched.c +++ b/block/cfq-iosched.c @@ -2446,12 +2446,22 @@ static void cfq_exit_queue(struct elevator_queue *e) static void *cfq_init_queue(struct request_queue *q) { struct cfq_data *cfqd; + int i; cfqd = kmalloc_node(sizeof(*cfqd), GFP_KERNEL | __GFP_ZERO, q->node); if (!cfqd) return NULL; cfqd->service_tree = CFQ_RB_ROOT; + + /* + * Not strictly needed (since RB_ROOT just clears the node and we + * zeroed cfqd on alloc), but better be safe in case someone decides + * to add magic to the rb code + */ + for (i = 0; i < CFQ_PRIO_LISTS; i++) + cfqd->prio_trees[i] = RB_ROOT; + INIT_LIST_HEAD(&cfqd->cic_list); cfqd->queue = q; |