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authorPeter Zijlstra <a.p.zijlstra@chello.nl>2007-10-16 23:25:46 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-10-17 08:42:45 -0700
commite0bf68ddec4f4f90e5871404be4f1854c17f3120 (patch)
tree36203a3558cbe26d698bed18be69b3822fb5eef2 /block
parentdc62a30e274d003a4d08fb888f1520add4b21373 (diff)
downloadlinux-next-e0bf68ddec4f4f90e5871404be4f1854c17f3120.tar.gz
mm: bdi init hooks
provide BDI constructor/destructor hooks [akpm@linux-foundation.org: compile fix] Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'block')
-rw-r--r--block/ll_rw_blk.c13
1 files changed, 10 insertions, 3 deletions
diff --git a/block/ll_rw_blk.c b/block/ll_rw_blk.c
index 9eabac95fbe0..524404bd08c1 100644
--- a/block/ll_rw_blk.c
+++ b/block/ll_rw_blk.c
@@ -1786,6 +1786,7 @@ static void blk_release_queue(struct kobject *kobj)
blk_trace_shutdown(q);
+ bdi_destroy(&q->backing_dev_info);
kmem_cache_free(requestq_cachep, q);
}
@@ -1839,21 +1840,27 @@ static struct kobj_type queue_ktype;
struct request_queue *blk_alloc_queue_node(gfp_t gfp_mask, int node_id)
{
struct request_queue *q;
+ int err;
q = kmem_cache_alloc_node(requestq_cachep,
gfp_mask | __GFP_ZERO, node_id);
if (!q)
return NULL;
+ q->backing_dev_info.unplug_io_fn = blk_backing_dev_unplug;
+ q->backing_dev_info.unplug_io_data = q;
+ err = bdi_init(&q->backing_dev_info);
+ if (err) {
+ kmem_cache_free(requestq_cachep, q);
+ return NULL;
+ }
+
init_timer(&q->unplug_timer);
kobject_set_name(&q->kobj, "%s", "queue");
q->kobj.ktype = &queue_ktype;
kobject_init(&q->kobj);
- q->backing_dev_info.unplug_io_fn = blk_backing_dev_unplug;
- q->backing_dev_info.unplug_io_data = q;
-
mutex_init(&q->sysfs_lock);
return q;