powerpc/powernv: Fix iommu table size calculation hook for small tables

[karo-tx-linux.git] / block / blk-mq-sysfs.c

diff --git a/block/blk-mq-sysfs.c b/block/blk-mq-sysfs.c
index 295e69670c39343d058cbf7f67fc076f7249e94e..d745ab81033afa8510f6b2d8dbbbdc187693901a 100644 (file)
--- a/block/blk-mq-sysfs.c
+++ b/block/blk-mq-sysfs.c
@@ -17,6 +17,15 @@ static void blk_mq_sysfs_release(struct kobject *kobj)
 {
 }
 
+static void blk_mq_hw_sysfs_release(struct kobject *kobj)
+{
+       struct blk_mq_hw_ctx *hctx = container_of(kobj, struct blk_mq_hw_ctx,
+                                                 kobj);
+       free_cpumask_var(hctx->cpumask);
+       kfree(hctx->ctxs);
+       kfree(hctx);
+}
+
 struct blk_mq_ctx_sysfs_entry {
        struct attribute attr;
        ssize_t (*show)(struct blk_mq_ctx *, char *);
@@ -200,7 +209,7 @@ static struct kobj_type blk_mq_ctx_ktype = {
 static struct kobj_type blk_mq_hw_ktype = {
        .sysfs_ops      = &blk_mq_hw_sysfs_ops,
        .default_attrs  = default_hw_ctx_attrs,
-       .release        = blk_mq_sysfs_release,
+       .release        = blk_mq_hw_sysfs_release,
 };
 
 static void blk_mq_unregister_hctx(struct blk_mq_hw_ctx *hctx)
@@ -242,24 +251,15 @@ static int blk_mq_register_hctx(struct blk_mq_hw_ctx *hctx)
 static void __blk_mq_unregister_dev(struct device *dev, struct request_queue *q)
 {
        struct blk_mq_hw_ctx *hctx;
-       struct blk_mq_ctx *ctx;
-       int i, j;
+       int i;
 
-       queue_for_each_hw_ctx(q, hctx, i) {
+       queue_for_each_hw_ctx(q, hctx, i)
                blk_mq_unregister_hctx(hctx);
 
-               hctx_for_each_ctx(hctx, ctx, j)
-                       kobject_put(&ctx->kobj);
-
-               kobject_put(&hctx->kobj);
-       }
-
        blk_mq_debugfs_unregister_hctxs(q);
 
        kobject_uevent(&q->mq_kobj, KOBJ_REMOVE);
        kobject_del(&q->mq_kobj);
-       kobject_put(&q->mq_kobj);
-
        kobject_put(&dev->kobj);
 
        q->mq_sysfs_init_done = false;
@@ -277,7 +277,19 @@ void blk_mq_hctx_kobj_init(struct blk_mq_hw_ctx *hctx)
        kobject_init(&hctx->kobj, &blk_mq_hw_ktype);
 }
 
-static void blk_mq_sysfs_init(struct request_queue *q)
+void blk_mq_sysfs_deinit(struct request_queue *q)
+{
+       struct blk_mq_ctx *ctx;
+       int cpu;
+
+       for_each_possible_cpu(cpu) {
+               ctx = per_cpu_ptr(q->queue_ctx, cpu);
+               kobject_put(&ctx->kobj);
+       }
+       kobject_put(&q->mq_kobj);
+}
+
+void blk_mq_sysfs_init(struct request_queue *q)
 {
        struct blk_mq_ctx *ctx;
        int cpu;
@@ -297,8 +309,6 @@ int blk_mq_register_dev(struct device *dev, struct request_queue *q)
 
        blk_mq_disable_hotplug();
 
-       blk_mq_sysfs_init(q);
-
        ret = kobject_add(&q->mq_kobj, kobject_get(&dev->kobj), "%s", "mq");
        if (ret < 0)
                goto out;