diff options
author | Dan Williams <dan.j.williams@intel.com> | 2012-06-21 23:25:27 -0700 |
---|---|---|
committer | James Bottomley <JBottomley@Parallels.com> | 2012-07-20 08:58:45 +0100 |
commit | e4a9c3732cea3e3c8c704aad86636090ffe6b25f (patch) | |
tree | faea8e91b3d917dcdb4c89adbb021ac737a6cb35 /net/tipc/addr.h | |
parent | 3b661a92e869ebe2358de8f4b3230ad84f7fce51 (diff) |
[SCSI] libata, libsas: introduce sched_eh and end_eh port ops
When managing shost->host_eh_scheduled libata assumes that there is a
1:1 shost-to-ata_port relationship. libsas creates a 1:N relationship
so it needs to manage host_eh_scheduled cumulatively at the host level.
The sched_eh and end_eh port port ops allow libsas to track when domain
devices enter/leave the "eh-pending" state under ha->lock (previously
named ha->state_lock, but it is no longer just a lock for ha->state
changes).
Since host_eh_scheduled indicates eh without backing commands pinning
the device it can be deallocated at any time. Move the taking of the
domain_device reference under the port_lock to guarantee that the
ata_port stays around for the duration of eh.
Reviewed-by: Jacek Danecki <jacek.danecki@intel.com>
Acked-by: Jeff Garzik <jgarzik@redhat.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to 'net/tipc/addr.h')
0 files changed, 0 insertions, 0 deletions