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| author | Christof Schmitt <christof.schmitt@de.ibm.com> | 2009-11-24 16:54:14 +0100 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@suse.de> | 2009-12-04 12:02:16 -0600 |
| commit | ee744622c65cd66824e8dd1b9509e515c800de14 (patch) | |
| tree | 4925603f5170400b07cde7cc18d2519cfcf788e2 /drivers/s390/scsi/zfcp_fc.c | |
| parent | 7c7dc196814b9e1d5cc254dc579a5fa78ae524f7 (diff) | |
| download | blackbird-op-linux-ee744622c65cd66824e8dd1b9509e515c800de14.tar.gz blackbird-op-linux-ee744622c65cd66824e8dd1b9509e515c800de14.zip | |
[SCSI] zfcp: Improve ELS ADISC handling
Introduce kmem_cache for ELS ADISC data to guarantee the required
hardware alignment and free the allocated memory in case the send
failes.
Reviewed-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Diffstat (limited to 'drivers/s390/scsi/zfcp_fc.c')
| -rw-r--r-- | drivers/s390/scsi/zfcp_fc.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/drivers/s390/scsi/zfcp_fc.c b/drivers/s390/scsi/zfcp_fc.c index 6d5ccc053e3a..ac5e3b7a3576 100644 --- a/drivers/s390/scsi/zfcp_fc.c +++ b/drivers/s390/scsi/zfcp_fc.c @@ -389,15 +389,16 @@ static void zfcp_fc_adisc_handler(void *data) out: atomic_clear_mask(ZFCP_STATUS_PORT_LINK_TEST, &port->status); put_device(&port->sysfs_device); - kfree(adisc); + kmem_cache_free(zfcp_data.adisc_cache, adisc); } static int zfcp_fc_adisc(struct zfcp_port *port) { struct zfcp_fc_els_adisc *adisc; struct zfcp_adapter *adapter = port->adapter; + int ret; - adisc = kzalloc(sizeof(struct zfcp_fc_els_adisc), GFP_ATOMIC); + adisc = kmem_cache_alloc(zfcp_data.adisc_cache, GFP_ATOMIC); if (!adisc) return -ENOMEM; @@ -420,7 +421,11 @@ static int zfcp_fc_adisc(struct zfcp_port *port) hton24(adisc->adisc_req.adisc_port_id, fc_host_port_id(adapter->scsi_host)); - return zfcp_fsf_send_els(adapter, port->d_id, &adisc->els); + ret = zfcp_fsf_send_els(adapter, port->d_id, &adisc->els); + if (ret) + kmem_cache_free(zfcp_data.adisc_cache, adisc); + + return ret; } void zfcp_fc_link_test_work(struct work_struct *work) |
