diff options
| author | Christof Schmitt | 2009-03-02 13:08:57 +0100 |
|---|---|---|
| committer | James Bottomley | 2009-03-12 18:58:18 +0100 |
| commit | 49f0f01c9966639f8fd7ce784a412e22057d9f2a (patch) | |
| tree | d6d1238eaa7467e447889639c35e5fd742ba2682 /drivers/s390/scsi/zfcp_fsf.c | |
| parent | [SCSI] zfcp: add measurement data for average qdio queue utilisation (diff) | |
| download | kernel-qcow2-linux-49f0f01c9966639f8fd7ce784a412e22057d9f2a.tar.gz kernel-qcow2-linux-49f0f01c9966639f8fd7ce784a412e22057d9f2a.tar.xz kernel-qcow2-linux-49f0f01c9966639f8fd7ce784a412e22057d9f2a.zip | |
[SCSI] zfcp: Simplify latency lock handling
The lock only needs to protect the softirq context called from qdio
against the userspace context called from sysfs. spin_lock and
spin_lock_bh is enough.
Acked-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Diffstat (limited to 'drivers/s390/scsi/zfcp_fsf.c')
| -rw-r--r-- | drivers/s390/scsi/zfcp_fsf.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/drivers/s390/scsi/zfcp_fsf.c b/drivers/s390/scsi/zfcp_fsf.c index 638cd5a2919d..cce698114b0b 100644 --- a/drivers/s390/scsi/zfcp_fsf.c +++ b/drivers/s390/scsi/zfcp_fsf.c @@ -2069,7 +2069,6 @@ static void zfcp_fsf_req_latency(struct zfcp_fsf_req *req) struct fsf_qual_latency_info *lat_inf; struct latency_cont *lat; struct zfcp_unit *unit = req->unit; - unsigned long flags; lat_inf = &req->qtcb->prefix.prot_status_qual.latency_info; @@ -2087,11 +2086,11 @@ static void zfcp_fsf_req_latency(struct zfcp_fsf_req *req) return; } - spin_lock_irqsave(&unit->latencies.lock, flags); + spin_lock(&unit->latencies.lock); zfcp_fsf_update_lat(&lat->channel, lat_inf->channel_lat); zfcp_fsf_update_lat(&lat->fabric, lat_inf->fabric_lat); lat->counter++; - spin_unlock_irqrestore(&unit->latencies.lock, flags); + spin_unlock(&unit->latencies.lock); } #ifdef CONFIG_BLK_DEV_IO_TRACE |