[PATCH scsi-misc-2.6 00/03] scsi: misc timer fixes (again)

From: Tejun Heo
Date: Fri May 13 2005 - 19:50:07 EST


Hello, James.

It's been a while, but I'm finally settled with git. :-)

This is repost of the previous scsi timer patchset. After thinking
about it a while, the first patch seemed unnecessary as you told, so
it's dropped and the others are regenerated.

aic79xx_osm.c DV still uses eh_timeout. Is it gonna be updated like
aic7xxx_osm.c is updated? If not, I have a patch to fix the eh timer
part. I have a patcheset waiting for it to be clared - unexporting
SCSI timer as the semantics is very specific and nothing good can come
from tempering with it. Once aic79xx_osm.c is cleared, I'll post the
patches.

[ Start of patch descriptions ]

01_scsi_timer_dispatch_race_fix.patch
: remove a timer race in scsi_queue_insert()

scsi_queue_insert() has four callers. Three callers call with
timer disabled and one (the second invocation in
scsi_dispatch_cmd()) calls with timer activated.
scsi_queue_insert() used to always call scsi_delete_timer()
and ignore the return value. This results in race with timer
expiration. Remove scsi_delete_timer() call from
scsi_queue_insert() and make the caller delete timer and check
the return value.

02_scsi_timer_remove_delete_timer_from_reset_provider.patch
: remove unnecessary scsi_delete_timer() call in scsi_reset_provider()

scsi_reset_provider() calls scsi_delete_timer() on exit which
isn't necessary. Remove it.

03_scsi_timer_eh_timer_remove_spurious_if.patch
: remove spurious if tests from scsi_eh_{times_out|done}

'if' tests which check if eh_action isn't NULL in both
functions are always true. Remove the redundant if's as it
can give wrong impressions.

[ End of patch descriptions ]

Thanks.

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