[SCSI] zfcp: Hold queue lock when checking port/unit handle for FCP command

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We need to hold the queue-lock when checking whether we still have a valid
unit/port handle for the FCP command, i.e whether we can issue this request for
this unit/port. If the error recovery is about to close this unit/port, then it
competes for the queue-lock. If the close request issued by the error recovery
wins, then it is guaranteed that this unit/port has been blocked for other
requests.

Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: Martin Peschke <mp3@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

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Christof Schmitt 2007-12-20 12:30:26 +01:00 • committed by James Bottomley

parent 3f0ca62add

commit ba1724202a

2 changed files with 10 additions and 5 deletions

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7

drivers/s390/scsi/zfcp_fsf.c

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8

drivers/s390/scsi/zfcp_scsi.c

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