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authorNicholas Bellinger <nab@linux-iscsi.org>2013-11-09 01:10:44 +0400
committerNicholas Bellinger <nab@linux-iscsi.org>2013-11-09 01:13:38 +0400
commit4863e525659abbc903aacc67fd916f12914f6c1d (patch)
tree228f0fe16e5264922c383c5b9a6cfc17b30a5e6d /drivers/target
parent4a9a6c8d538eff6d627fa14409c7c25aff652541 (diff)
downloadlinux-4863e525659abbc903aacc67fd916f12914f6c1d.tar.xz
target: Add per device xcopy_lun for copy offload I/O
This patch adds a se_device->xcopy_lun that is used for local copy offload I/O, instead of allocating + initializing a pseudo se_lun for each received EXTENDED_COPY operation. Also, move declaration of struct se_lun + struct se_port_stat_grps ahead of struct se_device. Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'drivers/target')
-rw-r--r--drivers/target/target_core_device.c9
-rw-r--r--drivers/target/target_core_xcopy.c18
2 files changed, 10 insertions, 17 deletions
diff --git a/drivers/target/target_core_device.c b/drivers/target/target_core_device.c
index 569a3c7c9e5a..dbe40ef14776 100644
--- a/drivers/target/target_core_device.c
+++ b/drivers/target/target_core_device.c
@@ -1409,6 +1409,7 @@ static void scsi_dump_inquiry(struct se_device *dev)
struct se_device *target_alloc_device(struct se_hba *hba, const char *name)
{
struct se_device *dev;
+ struct se_lun *xcopy_lun;
dev = hba->transport->alloc_device(hba, name);
if (!dev)
@@ -1471,6 +1472,14 @@ struct se_device *target_alloc_device(struct se_hba *hba, const char *name)
dev->dev_attrib.fabric_max_sectors = DA_FABRIC_MAX_SECTORS;
dev->dev_attrib.optimal_sectors = DA_FABRIC_MAX_SECTORS;
+ xcopy_lun = &dev->xcopy_lun;
+ xcopy_lun->lun_se_dev = dev;
+ init_completion(&xcopy_lun->lun_shutdown_comp);
+ INIT_LIST_HEAD(&xcopy_lun->lun_acl_list);
+ spin_lock_init(&xcopy_lun->lun_acl_lock);
+ spin_lock_init(&xcopy_lun->lun_sep_lock);
+ init_completion(&xcopy_lun->lun_ref_comp);
+
return dev;
}
diff --git a/drivers/target/target_core_xcopy.c b/drivers/target/target_core_xcopy.c
index b12fc43b5463..d67304a6aa9e 100644
--- a/drivers/target/target_core_xcopy.c
+++ b/drivers/target/target_core_xcopy.c
@@ -401,9 +401,6 @@ static void xcopy_pt_release_cmd(struct se_cmd *se_cmd)
struct xcopy_pt_cmd *xpt_cmd = container_of(se_cmd,
struct xcopy_pt_cmd, se_cmd);
- if (xpt_cmd->remote_port)
- kfree(se_cmd->se_lun);
-
kfree(xpt_cmd);
}
@@ -568,21 +565,10 @@ static int target_xcopy_init_pt_lun(
return 0;
}
- pt_cmd->se_lun = kzalloc(sizeof(struct se_lun), GFP_KERNEL);
- if (!pt_cmd->se_lun) {
- pr_err("Unable to allocate pt_cmd->se_lun\n");
- return -ENOMEM;
- }
- init_completion(&pt_cmd->se_lun->lun_shutdown_comp);
- INIT_LIST_HEAD(&pt_cmd->se_lun->lun_acl_list);
- spin_lock_init(&pt_cmd->se_lun->lun_acl_lock);
- spin_lock_init(&pt_cmd->se_lun->lun_sep_lock);
- init_completion(&pt_cmd->se_lun->lun_ref_comp);
-
+ pt_cmd->se_lun = &se_dev->xcopy_lun;
pt_cmd->se_dev = se_dev;
pr_debug("Setup emulated se_dev: %p from se_dev\n", pt_cmd->se_dev);
- pt_cmd->se_lun->lun_se_dev = se_dev;
pt_cmd->se_cmd_flags |= SCF_SE_LUN_CMD | SCF_CMD_XCOPY_PASSTHROUGH;
pr_debug("Setup emulated se_dev: %p to pt_cmd->se_lun->lun_se_dev\n",
@@ -653,8 +639,6 @@ static int target_xcopy_setup_pt_cmd(
return 0;
out:
- if (remote_port == true)
- kfree(cmd->se_lun);
return ret;
}