| commit | f9ab94cee313746573b2d693bc2afb807ebb0998 | |
| author | Mikulas Patocka <mpatocka@redhat.com> | |
| Mon, 22 Jun 2009 09:12:20 +0000 (22 10:12 +0100) | ||
| committer | Alasdair G Kergon <agk@redhat.com> | |
| Mon, 22 Jun 2009 09:12:20 +0000 (22 10:12 +0100) | ||
| tree | 150155f364db0f26c7217e1f92d31344aa67a3f0 | treesnapshot (tar.gz zip) |
| parent | 27eaa14975d8b53f0bad422e53cdf8e5f6dd44ec | commitdiff |
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>
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>
| drivers/md/dm.c | diffblobblamehistory | |
| include/linux/device-mapper.h | diffblobblamehistory |