block: Remove unused functions (2e82b84c) · Commits · 戴 / test

include/linux/backing-dev.h

+0 −5

Original line number	Diff line number	Diff line
		@@ -17,8 +17,6 @@
		#include <linux/backing-dev-defs.h>
		#include <linux/slab.h>

		int __must_check bdi_init(struct backing_dev_info *bdi);

		static inline struct backing_dev_info bdi_get(struct backing_dev_info bdi)
		{
		kref_get(&bdi->refcnt);
		@@ -32,12 +30,9 @@ int bdi_register(struct backing_dev_info bdi, struct device parent,
		const char *fmt, ...);
		int bdi_register_va(struct backing_dev_info bdi, struct device parent,
		const char *fmt, va_list args);
		int bdi_register_dev(struct backing_dev_info *bdi, dev_t dev);
		int bdi_register_owner(struct backing_dev_info bdi, struct device owner);
		void bdi_unregister(struct backing_dev_info *bdi);

		int __must_check bdi_setup_and_register(struct backing_dev_info , char );
		void bdi_destroy(struct backing_dev_info *bdi);
		struct backing_dev_info *bdi_alloc_node(gfp_t gfp_mask, int node_id);
		static inline struct backing_dev_info *bdi_alloc(gfp_t gfp_mask)
		{

mm/backing-dev.c

+6 −50

Original line number	Diff line number	Diff line
		@@ -12,8 +12,6 @@
		#include <linux/device.h>
		#include <trace/events/writeback.h>

		static atomic_long_t bdi_seq = ATOMIC_LONG_INIT(0);

		struct backing_dev_info noop_backing_dev_info = {
		.name = "noop",
		.capabilities = BDI_CAP_NO_ACCT_AND_WRITEBACK,
		@@ -242,6 +240,8 @@ static __init int bdi_class_init(void)
		}
		postcore_initcall(bdi_class_init);

		static int bdi_init(struct backing_dev_info *bdi);

		static int __init default_bdi_init(void)
		{
		int err;
		@@ -820,7 +820,7 @@ static void cgwb_remove_from_bdi_list(struct bdi_writeback *wb)

		#endif /* CONFIG_CGROUP_WRITEBACK */

		int bdi_init(struct backing_dev_info *bdi)
		static int bdi_init(struct backing_dev_info *bdi)
		{
		int ret;

		@@ -838,7 +838,6 @@ int bdi_init(struct backing_dev_info *bdi)

		return ret;
		}
		EXPORT_SYMBOL(bdi_init);

		struct backing_dev_info *bdi_alloc_node(gfp_t gfp_mask, int node_id)
		{
		@@ -897,12 +896,6 @@ int bdi_register(struct backing_dev_info bdi, struct device parent,
		}
		EXPORT_SYMBOL(bdi_register);

		int bdi_register_dev(struct backing_dev_info *bdi, dev_t dev)
		{
		return bdi_register(bdi, NULL, "%u:%u", MAJOR(dev), MINOR(dev));
		}
		EXPORT_SYMBOL(bdi_register_dev);

		int bdi_register_owner(struct backing_dev_info bdi, struct device owner)
		{
		int rc;
		@@ -950,13 +943,6 @@ void bdi_unregister(struct backing_dev_info *bdi)
		}
		}

		static void bdi_exit(struct backing_dev_info *bdi)
		{
		WARN_ON_ONCE(bdi->dev);
		wb_exit(&bdi->wb);
		cgwb_bdi_exit(bdi);
		}

		static void release_bdi(struct kref *ref)
		{
		struct backing_dev_info *bdi =
		@@ -964,7 +950,9 @@ static void release_bdi(struct kref *ref)

		if (test_bit(WB_registered, &bdi->wb.state))
		bdi_unregister(bdi);
		bdi_exit(bdi);
		WARN_ON_ONCE(bdi->dev);
		wb_exit(&bdi->wb);
		cgwb_bdi_exit(bdi);
		kfree(bdi);
		}

		@@ -974,38 +962,6 @@ void bdi_put(struct backing_dev_info *bdi)
		}
		EXPORT_SYMBOL(bdi_put);

		void bdi_destroy(struct backing_dev_info *bdi)
		{
		bdi_unregister(bdi);
		bdi_exit(bdi);
		}
		EXPORT_SYMBOL(bdi_destroy);

		/*
		* For use from filesystems to quickly init and register a bdi associated
		* with dirty writeback
		*/
		int bdi_setup_and_register(struct backing_dev_info bdi, char name)
		{
		int err;

		bdi->name = name;
		bdi->capabilities = 0;
		err = bdi_init(bdi);
		if (err)
		return err;

		err = bdi_register(bdi, NULL, "%.28s-%ld", name,
		atomic_long_inc_return(&bdi_seq));
		if (err) {
		bdi_destroy(bdi);
		return err;
		}

		return 0;
		}
		EXPORT_SYMBOL(bdi_setup_and_register);

		static wait_queue_head_t congestion_wqh[2] = {
		__WAIT_QUEUE_HEAD_INITIALIZER(congestion_wqh[0]),
		__WAIT_QUEUE_HEAD_INITIALIZER(congestion_wqh[1])

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