btrfs: use KMEM_CACHE() to create btrfs_trans_handle cache
Use the KMEM_CACHE() macro instead of kmem_cache_create() to simplify the creation of SLAB caches when the default values are used. Signed-off-by: Kunwu Chan <chentao@kylinos.cn> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
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