When enable lockdep, seeing "possible irq lock inversion dependency detected"
error. This patch fixes the issue.
Thanks for your help!
Wendy
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Ren,
Based on the discussion recently held at LSF 2013, we are reworking the
error recovery path to address all the issues you are mentioning. That
work contradicts these patches. So for now, these should be held off.
-- james s
On 5/20/2013 3:14 AM, Ren Mingxin wrote:
When there is a s
When there is a scsi command timed-out or failed, the scsi eh
tries a thorugh recovery, which is necessary for non-redundant
systems. However, the thorugh recovery usually takes much time,
which is not acceptable for misson critical systems. To improve
this latency, if we are working on a redundant
This patch introduces new interfaces through sysfs for sas hosts
and rphys to allow users to avoid the scsi_eh recovery actions
on different levels when scsi commands timed out, e.g.
/sys/devices/pci***/.../hostN/sas_host/hostN/fast_io_tmo_flags
/sys/devices/pci***/.../hostN/port-X:Y/end_device
The return code FAST_IO_FAIL was introduced for fast failed io
recovery. To use this code for fast timed-out io recovery as well,
we'd rename it to FAST_IO.
Signed-off-by: Ren Mingxin
---
drivers/scsi/scsi_error.c | 18 +-
drivers/scsi/scsi_transport_fc.c|4 ++
This patch implements fast timed-out io recovery in LLDD(mptfusion)
by checking the corresponding bit fields specified in the new added
interface "fast_io_tmo_flags" and returning "FAST_IO" to avoid the
scsi_eh recovery actions on corresponding levels.
This is mainly for redundant configurations.
This patch introduces new interfaces through sysfs for fc hosts
and rports to allow users to avoid the scsi_eh recovery actions
on different levels when scsi commands timed out, e.g.
/sys/devices/pci***/.../hostN/fc_host/hostN/fast_io_tmo_flags
/sys/devices/pci***/.../hostN/rport-X:Y-Z/fc_remot
This patch implements fast timed-out io recovery in LLDD(lpfc) by
checking the corresponding bit fields specified in the new added
interface "fast_io_tmo_flags" and returning "FAST_IO" to avoid the
scsi_eh recovery actions on corresponding levels.
This is mainly for redundant configurations. To no
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