Commit f7995089 authored by Mike Snitzer's avatar Mike Snitzer
Browse files

dm: unexport dm_get_queue_limits() 



There are no dm_get_queue_limits() callers outside of DM core and
there shouldn't be.

Also, remove its BUG_ON(!atomic_read(&md->holders)) to micro-optimize
__process_abnormal_io().

Signed-off-by: default avatarMike Snitzer <snitzer@kernel.org>
parent 13f6facf

drivers/md/dm.c

+9 −11
Original line number Diff line number Diff line
@@ -1072,6 +1072,15 @@ static void dm_io_dec_pending(struct dm_io *io, blk_status_t error) 
	__dm_io_dec_pending(io);

}



/*

 * The queue_limits are only valid as long as you have a reference

 * count on 'md'. But _not_ imposing verification to avoid atomic_read(),

 */

static inline struct queue_limits *dm_get_queue_limits(struct mapped_device *md)

{

	return &md->queue->limits;

}



void disable_discard(struct mapped_device *md)

{

	struct queue_limits *limits = dm_get_queue_limits(md);
@@ -2311,17 +2320,6 @@ struct target_type *dm_get_immutable_target_type(struct mapped_device *md) 
	return md->immutable_target_type;

}



/*

 * The queue_limits are only valid as long as you have a reference

 * count on 'md'.

 */

struct queue_limits *dm_get_queue_limits(struct mapped_device *md)

{

	BUG_ON(!atomic_read(&md->holders));

	return &md->queue->limits;

}

EXPORT_SYMBOL_GPL(dm_get_queue_limits);



/*

 * Setup the DM device's queue based on md's type

 */

include/linux/device-mapper.h

+0 −2
Original line number Diff line number Diff line
@@ -530,8 +530,6 @@ int __init dm_early_create(struct dm_ioctl *dmi, 
			   struct dm_target_spec **spec_array,

			   char **target_params_array);



struct queue_limits *dm_get_queue_limits(struct mapped_device *md);



/*

 * Geometry functions.

 */