tree 5c333d47bfaefa34ccd827744f35381133f4444b
parent 5a27e60dec59a95bd7f8ae9a19ae2ede4f76395b
author Stefan Haberland <stefan.haberland@de.ibm.com> 1294228085 +0100
committer Martin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com> 1294228050 +0100

[S390] dasd: Prevent deadlock during suspend/resume.

The freeze callback may set a stop bit so that a worker thread could
not start I/O. The discipline specific freeze function waits for the
worker to be completed.
Set the stop_bit after the discipline specific freeze function has
returned and no worker is running.

Signed-off-by: Stefan Haberland <stefan.haberland@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>