The following series fixes several problems causing hangs while
rmmoding the cciss driver. In the process of fixing these hangs, I
also reworked the the logical drive scanning kernel thread to use one
thread per driver rather than one thread per controller. I also added
a sysfs attribute to kick off a controller scan.
Changelog
v2
Staticially initialize scan_mutex and scan_q.
Remove unneeded function declarations.
Added a patch that uses a mutex to indicate we are busy initializing
rather than a integer flag.
Remove a possible scan race by moving the busy_initializing unlock after
the call to rebuild_luntable in cciss_init_one.
Reworked the scan thread to use a more traditional loop with a
set_current_state(TASK_INTERRUPTIBLE); schedule() at the top of the
loop.
.../ABI/testing/sysfs-bus-pci-devices-cciss | 7 +
drivers/block/cciss.c | 204 +++++++++++++++++---
drivers/block/cciss.h | 9 +
3 files changed, 191 insertions(+), 29 deletions(-)
Andrew Patterson (4):
cciss: remove logical drive sysfs entries during driver cleanup.
cciss: use mutex instead of flag to indicate busy initializing
cciss: use only one scan thread
cciss: kick off logical drive topology rescan through sysfs
--
Andrew Patterson
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