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dm: unexport dm_get_queue_limits()

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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: Mike Snitzer <snitzer@kernel.org>
This commit is contained in:
Mike Snitzer 2023-04-14 12:32:20 -04:00
parent 13f6facf3f
commit f7995089c5
2 changed files with 9 additions and 13 deletions
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20
drivers/md/dm.c
View File

@ -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
*/

2
include/linux/device-mapper.h
View File

@ -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.
*/