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| author |   Hannes Reinecke <hare@suse.de> | 2016-02-19 09:17:08 +0100 |
|---|---|---|
| committer |   Martin K. Petersen <martin.petersen@oracle.com> | 2016-02-23 21:27:02 -0500 |
| commit | aa90f49036a6a9dd917c5f571497a28e6a6e5bcc (patch) | |
| tree | 048686e19646ac065795e9c2fe445ff7eaf8b587 /drivers/scsi/device_handler | |
| parent | revert commit a8e5a2d593cb ("[SCSI] scsi_dh_alua: ALUA handler attach should succeed while TPG is transitioning") (diff) | |
| download | linux-dev-aa90f49036a6a9dd917c5f571497a28e6a6e5bcc.tar.xz linux-dev-aa90f49036a6a9dd917c5f571497a28e6a6e5bcc.zip | |
scsi_dh_alua: move optimize_stpg evaluation
When the optimize_stpg module option is set we should just set it
once during port_group allocation. Doing so allows us to override
it later with device specific settings.
Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/device_handler')
| -rw-r--r-- | drivers/scsi/device_handler/scsi_dh_alua.c | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/drivers/scsi/device_handler/scsi_dh_alua.c b/drivers/scsi/device_handler/scsi_dh_alua.c index 0ae25368ce44..d02894dd027d 100644 --- a/drivers/scsi/device_handler/scsi_dh_alua.c +++ b/drivers/scsi/device_handler/scsi_dh_alua.c @@ -64,6 +64,10 @@ #define ALUA_OPTIMIZE_STPG 1 #define ALUA_RTPG_EXT_HDR_UNSUPP 2 +static uint optimize_stpg; +module_param(optimize_stpg, uint, S_IRUGO|S_IWUSR); +MODULE_PARM_DESC(optimize_stpg, "Allow use of a non-optimized path, rather than sending a STPG, when implicit TPGS is supported (0=No,1=Yes). Default is 0."); + static LIST_HEAD(port_group_list); static DEFINE_SPINLOCK(port_group_lock); @@ -219,6 +223,8 @@ struct alua_port_group *alua_alloc_pg(struct scsi_device *sdev, pg->group_id = group_id; pg->tpgs = tpgs; pg->state = TPGS_STATE_OPTIMIZED; + if (optimize_stpg) + pg->flags |= ALUA_OPTIMIZE_STPG; kref_init(&pg->kref); spin_lock(&port_group_lock); @@ -678,10 +684,6 @@ static int alua_set_params(struct scsi_device *sdev, const char *params) return result; } -static uint optimize_stpg; -module_param(optimize_stpg, uint, S_IRUGO|S_IWUSR); -MODULE_PARM_DESC(optimize_stpg, "Allow use of a non-optimized path, rather than sending a STPG, when implicit TPGS is supported (0=No,1=Yes). Default is 0."); - /* * alua_activate - activate a path * @sdev: device on the path to be activated @@ -703,9 +705,6 @@ static int alua_activate(struct scsi_device *sdev, kref_get(&h->pg->kref); - if (optimize_stpg) - h->pg->flags |= ALUA_OPTIMIZE_STPG; - err = alua_rtpg(sdev, h->pg); if (err != SCSI_DH_OK) { kref_put(&h->pg->kref, release_port_group); |