Some scsi_dh modules are known to conflict with with 3rd party multipath
drivers (e.g. scsi_dh_emc conflicts with EMC PowerPath).
Allow 3rd party multipath drivers to programatically detach a scsi_dh
using the scsi_dh_detach() interface rather than require writing
'detach' to /sys/block/sdX/queue/dh_state
Signed-off-by: Mike Snitzer <snitzer@xxxxxxxxxx>
---
drivers/scsi/device_handler/scsi_dh.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
[begs the question: why are _any_ of the scsi_dh symbols
EXPORT_SYMBOL_GPL? Linux would benefit from more 3rd party use of
scsi_dh*. As it stands, Linux is being held back from having better
default handling of multipath LUNs purely because 3rd parties may not
play nicely with scsi_dh* being attached]
diff --git a/drivers/scsi/device_handler/scsi_dh.c b/drivers/scsi/device_handler/scsi_dh.c
index 23149b9..a550de1 100644
--- a/drivers/scsi/device_handler/scsi_dh.c
+++ b/drivers/scsi/device_handler/scsi_dh.c
@@ -578,7 +578,7 @@ void scsi_dh_detach(struct request_queue *q)
}
put_device(&sdev->sdev_gendev);
}
-EXPORT_SYMBOL_GPL(scsi_dh_detach);
+EXPORT_SYMBOL(scsi_dh_detach);
static struct notifier_block scsi_dh_nb = {
.notifier_call = scsi_dh_notifier
--
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