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| author | Andy Grover <agrover@redhat.com> | 2012-01-16 16:57:08 -0800 |
|---|---|---|
| committer | Nicholas Bellinger <nab@linux-iscsi.org> | 2012-01-18 08:35:58 +0000 |
| commit | 4949314c7283ea4f9ade182ca599583b89f7edd6 (patch) | |
| tree | bbd2316996bc2f19c1b3a8c24f8591f12d2330fa /drivers/target/target_core_alua.c | |
| parent | e8904dc5008ef92f0f62391d6557f03f921eeb32 (diff) | |
| download | linux-4949314c7283ea4f9ade182ca599583b89f7edd6.tar.gz linux-4949314c7283ea4f9ade182ca599583b89f7edd6.tar.xz linux-4949314c7283ea4f9ade182ca599583b89f7edd6.zip | |
target: Allow control CDBs with data > 1 page
We need to handle >1 page control cdbs, so extend the code to do a vmap
if bigger than 1 page. It seems like kmap() is still preferable if just
a page, fewer TLB shootdowns(?), so keep using that when possible.
Rename function pair for their new scope.
Signed-off-by: Andy Grover <agrover@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'drivers/target/target_core_alua.c')
| -rw-r--r-- | drivers/target/target_core_alua.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/target/target_core_alua.c b/drivers/target/target_core_alua.c index 1b1edd14f4bf..01a2691dfb47 100644 --- a/drivers/target/target_core_alua.c +++ b/drivers/target/target_core_alua.c @@ -78,7 +78,7 @@ int target_emulate_report_target_port_groups(struct se_task *task) return -EINVAL; } - buf = transport_kmap_first_data_page(cmd); + buf = transport_kmap_data_sg(cmd); spin_lock(&su_dev->t10_alua.tg_pt_gps_lock); list_for_each_entry(tg_pt_gp, &su_dev->t10_alua.tg_pt_gps_list, @@ -163,7 +163,7 @@ int target_emulate_report_target_port_groups(struct se_task *task) buf[2] = ((rd_len >> 8) & 0xff); buf[3] = (rd_len & 0xff); - transport_kunmap_first_data_page(cmd); + transport_kunmap_data_sg(cmd); task->task_scsi_status = GOOD; transport_complete_task(task, 1); @@ -194,7 +194,7 @@ int target_emulate_set_target_port_groups(struct se_task *task) cmd->scsi_sense_reason = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; return -EINVAL; } - buf = transport_kmap_first_data_page(cmd); + buf = transport_kmap_data_sg(cmd); /* * Determine if explict ALUA via SET_TARGET_PORT_GROUPS is allowed @@ -351,7 +351,7 @@ int target_emulate_set_target_port_groups(struct se_task *task) } out: - transport_kunmap_first_data_page(cmd); + transport_kunmap_data_sg(cmd); task->task_scsi_status = GOOD; transport_complete_task(task, 1); return 0; |