On 10/11/14 18:11, Christoph Hellwig wrote:
Hi Robert,
can you take a look at the patches at:
http://git.infradead.org/users/hch/scsi.git/shortlog/refs/heads/scsi-ioctl
and confirm if they fix your issue?
Hello Christoph,
At least to me patches 1/4..3/4 look like nice cleanup patches.
Regarding patch 4/4: I'm not sure yet what's the best way for addressing
potentially concurrent SG_SCSI_RESET ioctl calls. As far as I know many
SCSI LLDs have been implemented assuming that eh_*_reset_handler() calls
are serialized per SCSI host. Does this mean that a mutex has to be
added to avoid that an eh_*_reset_handler() call can be triggered via an
ioctl while at the same time the SCSI error handler thread is invoking
one of the eh_*_reset_handler() callback functions due to SCSI error
handling ?
For a prior discussion of this topic, see also
http://thread.gmane.org/gmane.linux.scsi/82582/focus=82747.
Bart.
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