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Commit 08649012 authored by Mike Snitzer's avatar Mike Snitzer Committed by Alasdair G Kergon
Browse files

dm table: clean dm_get_device and move exports 



There is no need for __table_get_device to be factored out.
Also move the exports to the end of their respective functions.

Signed-off-by: default avatarMike Snitzer <snitzer@redhat.com>
Signed-off-by: default avatarAlasdair G Kergon <agk@redhat.com>
parent 3e8dbb7f

drivers/md/dm-table.c

+13 −20
Original line number Diff line number Diff line
@@ -157,6 +157,7 @@ void *dm_vcalloc(unsigned long nmemb, unsigned long elem_size) 


	return addr;

}

EXPORT_SYMBOL(dm_vcalloc);



/*

 * highs, and targets are managed as dynamic arrays during a
@@ -277,6 +278,7 @@ void dm_table_get(struct dm_table *t) 
{

	atomic_inc(&t->holders);

}

EXPORT_SYMBOL(dm_table_get);



void dm_table_put(struct dm_table *t)

{
@@ -286,6 +288,7 @@ void dm_table_put(struct dm_table *t) 
	smp_mb__before_atomic_dec();

	atomic_dec(&t->holders);

}

EXPORT_SYMBOL(dm_table_put);



/*

 * Checks to see if we need to extend highs or targets.
@@ -451,13 +454,14 @@ static int upgrade_mode(struct dm_dev_internal *dd, fmode_t new_mode, 
 * Add a device to the list, or just increment the usage count if

 * it's already present.

 */

static int __table_get_device(struct dm_table *t, struct dm_target *ti,

		      const char *path, fmode_t mode, struct dm_dev **result)

int dm_get_device(struct dm_target *ti, const char *path, fmode_t mode,

		  struct dm_dev **result)

{

	int r;

	dev_t uninitialized_var(dev);

	struct dm_dev_internal *dd;

	unsigned int major, minor;

	struct dm_table *t = ti->table;



	BUG_ON(!t);
@@ -505,6 +509,7 @@ static int __table_get_device(struct dm_table *t, struct dm_target *ti, 
	*result = &dd->dm_dev;

	return 0;

}

EXPORT_SYMBOL(dm_get_device);



int dm_set_device_limits(struct dm_target *ti, struct dm_dev *dev,

			 sector_t start, sector_t len, void *data)
@@ -543,15 +548,8 @@ int dm_set_device_limits(struct dm_target *ti, struct dm_dev *dev, 
}

EXPORT_SYMBOL_GPL(dm_set_device_limits);



int dm_get_device(struct dm_target *ti, const char *path, fmode_t mode,

		  struct dm_dev **result)

{

	return __table_get_device(ti->table, ti, path, mode, result);

}





/*

 * Decrement a devices use count and remove it if necessary.

 * Decrement a device's use count and remove it if necessary.

 */

void dm_put_device(struct dm_target *ti, struct dm_dev *d)

{
@@ -564,6 +562,7 @@ void dm_put_device(struct dm_target *ti, struct dm_dev *d) 
		kfree(dd);

	}

}

EXPORT_SYMBOL(dm_put_device);



/*

 * Checks to see if the target joins onto the end of the table.
@@ -1074,11 +1073,13 @@ void dm_table_event(struct dm_table *t) 
		t->event_fn(t->event_context);

	mutex_unlock(&_event_lock);

}

EXPORT_SYMBOL(dm_table_event);



sector_t dm_table_get_size(struct dm_table *t)

{

	return t->num_targets ? (t->highs[t->num_targets - 1] + 1) : 0;

}

EXPORT_SYMBOL(dm_table_get_size);



struct dm_target *dm_table_get_target(struct dm_table *t, unsigned int index)

{
@@ -1234,6 +1235,7 @@ fmode_t dm_table_get_mode(struct dm_table *t) 
{

	return t->mode;

}

EXPORT_SYMBOL(dm_table_get_mode);



static void suspend_targets(struct dm_table *t, unsigned postsuspend)

{
@@ -1342,6 +1344,7 @@ struct mapped_device *dm_table_get_md(struct dm_table *t) 
{

	return t->md;

}

EXPORT_SYMBOL(dm_table_get_md);



static int device_discard_capable(struct dm_target *ti, struct dm_dev *dev,

				  sector_t start, sector_t len, void *data)
@@ -1379,13 +1382,3 @@ bool dm_table_supports_discards(struct dm_table *t) 


	return 0;

}
 


EXPORT_SYMBOL(dm_vcalloc);

EXPORT_SYMBOL(dm_get_device);

EXPORT_SYMBOL(dm_put_device);

EXPORT_SYMBOL(dm_table_event);

EXPORT_SYMBOL(dm_table_get_size);

EXPORT_SYMBOL(dm_table_get_mode);

EXPORT_SYMBOL(dm_table_get_md);

EXPORT_SYMBOL(dm_table_put);

EXPORT_SYMBOL(dm_table_get);