block: add internal hd part table references
We can't use krefs since it's apparently restricted to very basic
reference counting.
This reverts commit e4a683c8.
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
diff --git a/block/blk-core.c b/block/blk-core.c
index 500c080..2f4002f 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -70,7 +70,7 @@
part_stat_inc(cpu, part, merges[rw]);
} else {
part = disk_map_sector_rcu(rq->rq_disk, blk_rq_pos(rq));
- if (!kref_test_and_get(&part->ref)) {
+ if (!hd_struct_try_get(part)) {
/*
* The partition is already being removed,
* the request will be accounted on the disk only
@@ -80,7 +80,7 @@
* it as any other partition.
*/
part = &rq->rq_disk->part0;
- kref_get(&part->ref);
+ hd_struct_get(part);
}
part_round_stats(cpu, part);
part_inc_in_flight(part, rw);
@@ -1818,7 +1818,7 @@
part_round_stats(cpu, part);
part_dec_in_flight(part, rw);
- kref_put(&part->ref, __delete_partition);
+ hd_struct_put(part);
part_stat_unlock();
}
}
diff --git a/block/blk-merge.c b/block/blk-merge.c
index b06b83b..00b7d31 100644
--- a/block/blk-merge.c
+++ b/block/blk-merge.c
@@ -356,7 +356,7 @@
part_round_stats(cpu, part);
part_dec_in_flight(part, rq_data_dir(req));
- kref_put(&part->ref, __delete_partition);
+ hd_struct_put(part);
part_stat_unlock();
}
}
diff --git a/block/genhd.c b/block/genhd.c
index 85c1505..399d37e 100644
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -1192,7 +1192,8 @@
return NULL;
}
disk->part_tbl->part[0] = &disk->part0;
- kref_init(&disk->part0.ref);
+
+ hd_ref_init(&disk->part0);
disk->minors = minors;
rand_initialize_disk(disk);