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dm: remove dm_get_dev_t 

Open code dm_get_dev_t in the only remaining caller, and propagate the
exact error code from lookup_bdev and early_lookup_bdev.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20230531125535.676098-20-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2023-05-31 14:55:30 +02:00 committed by Jens Axboe
parent 49177377e9
commit d4a28d7def
2 changed files with 5 additions and 19 deletions
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22
drivers/md/dm-table.c
View File

@ -323,20 +323,6 @@ static int upgrade_mode(struct dm_dev_internal *dd, fmode_t new_mode,
return 0;
}
/*
* Convert the path to a device
*/
dev_t dm_get_dev_t(const char *path)
{
dev_t dev;
if (lookup_bdev(path, &dev) &&
early_lookup_bdev(path, &dev))
return 0;
return dev;
}
EXPORT_SYMBOL_GPL(dm_get_dev_t);
/*
* Add a device to the list, or just increment the usage count if
* it's already present.
@ -359,9 +345,11 @@ int dm_get_device(struct dm_target *ti, const char *path, fmode_t mode,
if (MAJOR(dev) != major || MINOR(dev) != minor)
return -EOVERFLOW;
} else {
dev = dm_get_dev_t(path);
if (!dev)
return -ENODEV;
r = lookup_bdev(path, &dev);
if (r)
r = early_lookup_bdev(path, &dev);
if (r)
return r;
}
if (dev == disk_devt(t->md->disk))
return -EINVAL;

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

@ -170,8 +170,6 @@ struct dm_dev {
char name[16];
};
dev_t dm_get_dev_t(const char *path);
/*
* Constructors should call these functions to ensure destination devices
* are opened/closed correctly.