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51a0f659c0
This patch introduces a separate struct for the block_manager. It also uses IS_ERR to check the return value of dm_bufio_client_create instead of testing incorrectly for NULL. Prior to this patch a struct dm_block_manager was really an alias for a struct dm_bufio_client. We want to add some functionality to the block manager that will require extra fields, so this one to one mapping is no longer valid. Signed-off-by: Joe Thornber <ejt@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>