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authorChristoph Hellwig <hch@lst.de>2006-04-01 19:21:04 +0200
committerJeff Garzik <jeff@garzik.org>2006-04-10 14:15:47 -0400
commit9227c33de80ac01f269ed33624990ce84358e419 (patch)
tree7678d342949db011d37e15516c3eaa22ec32ff2a /Documentation/scsi/scsi_eh.txt
parent676165a8af7167f488abdcce6851a9bc36e83254 (diff)
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[PATCH] move ->eh_strategy_handler to the transport class
Overriding the whole EH code is a per-transport, not per-host thing. Move ->eh_strategy_handler to the transport class, same as ->eh_timed_out. Downside is that scsi_host_alloc can't check for the total lack of EH anymore, but the transition period from old EH where we needed it is long gone already. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'Documentation/scsi/scsi_eh.txt')
-rw-r--r--Documentation/scsi/scsi_eh.txt14
1 files changed, 7 insertions, 7 deletions
diff --git a/Documentation/scsi/scsi_eh.txt b/Documentation/scsi/scsi_eh.txt
index 331afd791cbb..ce767b90bb0d 100644
--- a/Documentation/scsi/scsi_eh.txt
+++ b/Documentation/scsi/scsi_eh.txt
@@ -19,9 +19,9 @@ TABLE OF CONTENTS
[2-1-1] Overview
[2-1-2] Flow of scmds through EH
[2-1-3] Flow of control
- [2-2] EH through hostt->eh_strategy_handler()
- [2-2-1] Pre hostt->eh_strategy_handler() SCSI midlayer conditions
- [2-2-2] Post hostt->eh_strategy_handler() SCSI midlayer conditions
+ [2-2] EH through transportt->eh_strategy_handler()
+ [2-2-1] Pre transportt->eh_strategy_handler() SCSI midlayer conditions
+ [2-2-2] Post transportt->eh_strategy_handler() SCSI midlayer conditions
[2-2-3] Things to consider
@@ -413,9 +413,9 @@ scmd->allowed.
layer of failure of the scmds.
-[2-2] EH through hostt->eh_strategy_handler()
+[2-2] EH through transportt->eh_strategy_handler()
- hostt->eh_strategy_handler() is invoked in the place of
+ transportt->eh_strategy_handler() is invoked in the place of
scsi_unjam_host() and it is responsible for whole recovery process.
On completion, the handler should have made lower layers forget about
all failed scmds and either ready for new commands or offline. Also,
@@ -424,7 +424,7 @@ SCSI midlayer. IOW, of the steps described in [2-1-2], all steps
except for #1 must be implemented by eh_strategy_handler().
-[2-2-1] Pre hostt->eh_strategy_handler() SCSI midlayer conditions
+[2-2-1] Pre transportt->eh_strategy_handler() SCSI midlayer conditions
The following conditions are true on entry to the handler.
@@ -437,7 +437,7 @@ except for #1 must be implemented by eh_strategy_handler().
- shost->host_failed == shost->host_busy
-[2-2-2] Post hostt->eh_strategy_handler() SCSI midlayer conditions
+[2-2-2] Post transportt->eh_strategy_handler() SCSI midlayer conditions
The following conditions must be true on exit from the handler.