| commit | f9ab94cee313746573b2d693bc2afb807ebb0998 | [log] [tgz] |
|---|---|---|
| author | Mikulas Patocka <mpatocka@redhat.com> | Mon Jun 22 10:12:20 2009 +0100 |
| committer | Alasdair G Kergon <agk@redhat.com> | Mon Jun 22 10:12:20 2009 +0100 |
| tree | 150155f364db0f26c7217e1f92d31344aa67a3f0 | |
| parent | 27eaa14975d8b53f0bad422e53cdf8e5f6dd44ec [diff] |
dm: introduce num_flush_requests Introduce num_flush_requests for a target to set to say how many flush instructions (empty barriers) it wants to receive. These are sent by __clone_and_map_empty_barrier with map_info->flush_request going from 0 to (num_flush_requests - 1). Old targets without flush support won't receive any flush requests. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>