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[SCSI] iscsi class: regression - fix races with state manipulation and blocking/unblocking

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For qla4xxx, we could be starting a session, but some error (network,
target, IO from a device that got started, etc) could cause the session
to fail and curring the block/unblock and state manipulation could race
with each other. This patch just has those operations done in the
single threaded iscsi eh work queue, so that way they are serialized.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
This commit is contained in:
Mike Christie
2008-03-04 13:26:55 -06:00
committed by James Bottomley
parent 024f801f52
commit 45ab33b6c1
2 changed files with 50 additions and 28 deletions
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2
include/scsi/scsi_transport_iscsi.h
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@@ -177,6 +177,8 @@ struct iscsi_cls_session {
struct list_head host_list;
struct iscsi_transport *transport;
spinlock_t lock;
struct work_struct block_work;
struct work_struct unblock_work;
struct work_struct scan_work;
struct work_struct unbind_work;