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authorChristoph Hellwig <hch@lst.de>2020-04-14 09:28:55 +0200
committerJens Axboe <axboe@kernel.dk>2020-04-20 11:32:59 -0600
commit8da2892e27833c5ee78788a66941e0e96eedad22 (patch)
treedfb5eb341b7a1f9a717c1db754ec54ae1c9fa208 /block/partitions
parentcddae808aeb77e5c29d22a8e0dfbdaed413f9e04 (diff)
downloadlinux-stericsson-8da2892e27833c5ee78788a66941e0e96eedad22.tar.gz
block: cleanup hd_struct freeing
Move hd_ref_init out of line as there it isn't anywhere near a fast path, and rename the rcu ref freeing callbacks to be more descriptive. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/partitions')
-rw-r--r--block/partitions/core.c18
1 files changed, 13 insertions, 5 deletions
diff --git a/block/partitions/core.c b/block/partitions/core.c
index 6dc534b502a9..c5b47627210a 100644
--- a/block/partitions/core.c
+++ b/block/partitions/core.c
@@ -274,10 +274,10 @@ struct device_type part_type = {
.uevent = part_uevent,
};
-static void delete_partition_work_fn(struct work_struct *work)
+static void hd_struct_free_work(struct work_struct *work)
{
- struct hd_struct *part = container_of(to_rcu_work(work), struct hd_struct,
- rcu_work);
+ struct hd_struct *part =
+ container_of(to_rcu_work(work), struct hd_struct, rcu_work);
part->start_sect = 0;
part->nr_sects = 0;
@@ -285,13 +285,21 @@ static void delete_partition_work_fn(struct work_struct *work)
put_device(part_to_dev(part));
}
-void __delete_partition(struct percpu_ref *ref)
+static void hd_struct_free(struct percpu_ref *ref)
{
struct hd_struct *part = container_of(ref, struct hd_struct, ref);
- INIT_RCU_WORK(&part->rcu_work, delete_partition_work_fn);
+
+ INIT_RCU_WORK(&part->rcu_work, hd_struct_free_work);
queue_rcu_work(system_wq, &part->rcu_work);
}
+int hd_ref_init(struct hd_struct *part)
+{
+ if (percpu_ref_init(&part->ref, hd_struct_free, 0, GFP_KERNEL))
+ return -ENOMEM;
+ return 0;
+}
+
/*
* Must be called either with bd_mutex held, before a disk can be opened or
* after all disk users are gone.