diff options
author | Christoph Hellwig <hch@lst.de> | 2006-04-01 12:21:04 -0500 |
---|---|---|
committer | Jeff Garzik <jeff@garzik.org> | 2006-04-10 14:15:47 -0400 |
commit | 9227c33de80ac01f269ed33624990ce84358e419 (patch) | |
tree | 7678d342949db011d37e15516c3eaa22ec32ff2a /Documentation/scsi/scsi_eh.txt | |
parent | 676165a8af7167f488abdcce6851a9bc36e83254 (diff) |
[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.txt | 14 |
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 | |||
19 | [2-1-1] Overview | 19 | [2-1-1] Overview |
20 | [2-1-2] Flow of scmds through EH | 20 | [2-1-2] Flow of scmds through EH |
21 | [2-1-3] Flow of control | 21 | [2-1-3] Flow of control |
22 | [2-2] EH through hostt->eh_strategy_handler() | 22 | [2-2] EH through transportt->eh_strategy_handler() |
23 | [2-2-1] Pre hostt->eh_strategy_handler() SCSI midlayer conditions | 23 | [2-2-1] Pre transportt->eh_strategy_handler() SCSI midlayer conditions |
24 | [2-2-2] Post hostt->eh_strategy_handler() SCSI midlayer conditions | 24 | [2-2-2] Post transportt->eh_strategy_handler() SCSI midlayer conditions |
25 | [2-2-3] Things to consider | 25 | [2-2-3] Things to consider |
26 | 26 | ||
27 | 27 | ||
@@ -413,9 +413,9 @@ scmd->allowed. | |||
413 | layer of failure of the scmds. | 413 | layer of failure of the scmds. |
414 | 414 | ||
415 | 415 | ||
416 | [2-2] EH through hostt->eh_strategy_handler() | 416 | [2-2] EH through transportt->eh_strategy_handler() |
417 | 417 | ||
418 | hostt->eh_strategy_handler() is invoked in the place of | 418 | transportt->eh_strategy_handler() is invoked in the place of |
419 | scsi_unjam_host() and it is responsible for whole recovery process. | 419 | scsi_unjam_host() and it is responsible for whole recovery process. |
420 | On completion, the handler should have made lower layers forget about | 420 | On completion, the handler should have made lower layers forget about |
421 | all failed scmds and either ready for new commands or offline. Also, | 421 | 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 | |||
424 | except for #1 must be implemented by eh_strategy_handler(). | 424 | except for #1 must be implemented by eh_strategy_handler(). |
425 | 425 | ||
426 | 426 | ||
427 | [2-2-1] Pre hostt->eh_strategy_handler() SCSI midlayer conditions | 427 | [2-2-1] Pre transportt->eh_strategy_handler() SCSI midlayer conditions |
428 | 428 | ||
429 | The following conditions are true on entry to the handler. | 429 | The following conditions are true on entry to the handler. |
430 | 430 | ||
@@ -437,7 +437,7 @@ except for #1 must be implemented by eh_strategy_handler(). | |||
437 | - shost->host_failed == shost->host_busy | 437 | - shost->host_failed == shost->host_busy |
438 | 438 | ||
439 | 439 | ||
440 | [2-2-2] Post hostt->eh_strategy_handler() SCSI midlayer conditions | 440 | [2-2-2] Post transportt->eh_strategy_handler() SCSI midlayer conditions |
441 | 441 | ||
442 | The following conditions must be true on exit from the handler. | 442 | The following conditions must be true on exit from the handler. |
443 | 443 | ||