diff options
| author | Bart Van Assche <bart.vanassche@sandisk.com> | 2015-05-19 16:16:01 +0200 |
|---|---|---|
| committer | Nicholas Bellinger <nab@linux-iscsi.org> | 2015-06-01 09:25:39 +0200 |
| commit | b3eeea6619a0ed4f37138661c49339b21361d397 (patch) | |
| tree | 68236615b4ab4ac9f3644f244aab35d6077b58a5 /drivers/target | |
| parent | target: simplify backend attribute implementation (diff) | |
| download | linux-b3eeea6619a0ed4f37138661c49339b21361d397.tar.xz linux-b3eeea6619a0ed4f37138661c49339b21361d397.zip | |
target: Simplify LUN shutdown code
Instead of starting a thread from transport_clear_lun_ref() that
waits for LUN shutdown, wait in that function for LUN shutdown
to finish. Additionally, change the return type of
transport_clear_lun_ref() from int to void.
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'drivers/target')
| -rw-r--r-- | drivers/target/target_core_device.c | 1 | ||||
| -rw-r--r-- | drivers/target/target_core_internal.h | 2 | ||||
| -rw-r--r-- | drivers/target/target_core_tpg.c | 2 | ||||
| -rw-r--r-- | drivers/target/target_core_transport.c | 23 |
4 files changed, 2 insertions, 26 deletions
diff --git a/drivers/target/target_core_device.c b/drivers/target/target_core_device.c index 22f1e180d8ee..1e4485b1849d 100644 --- a/drivers/target/target_core_device.c +++ b/drivers/target/target_core_device.c @@ -928,7 +928,6 @@ struct se_device *target_alloc_device(struct se_hba *hba, const char *name) xcopy_lun = &dev->xcopy_lun; xcopy_lun->lun_se_dev = dev; - init_completion(&xcopy_lun->lun_shutdown_comp); spin_lock_init(&xcopy_lun->lun_sep_lock); init_completion(&xcopy_lun->lun_ref_comp); diff --git a/drivers/target/target_core_internal.h b/drivers/target/target_core_internal.h index 01181aed67dc..23f992ed7cae 100644 --- a/drivers/target/target_core_internal.h +++ b/drivers/target/target_core_internal.h @@ -108,7 +108,7 @@ int transport_dump_vpd_assoc(struct t10_vpd *, unsigned char *, int); int transport_dump_vpd_ident_type(struct t10_vpd *, unsigned char *, int); int transport_dump_vpd_ident(struct t10_vpd *, unsigned char *, int); bool target_stop_cmd(struct se_cmd *cmd, unsigned long *flags); -int transport_clear_lun_ref(struct se_lun *); +void transport_clear_lun_ref(struct se_lun *); void transport_send_task_abort(struct se_cmd *); sense_reason_t target_cmd_size_check(struct se_cmd *cmd, unsigned int size); void target_qf_do_work(struct work_struct *work); diff --git a/drivers/target/target_core_tpg.c b/drivers/target/target_core_tpg.c index 91f8ddb6d783..fd531fcf3191 100644 --- a/drivers/target/target_core_tpg.c +++ b/drivers/target/target_core_tpg.c @@ -494,7 +494,6 @@ static int core_tpg_setup_virtual_lun0(struct se_portal_group *se_tpg) lun->unpacked_lun = 0; atomic_set(&lun->lun_acl_count, 0); - init_completion(&lun->lun_shutdown_comp); spin_lock_init(&lun->lun_sep_lock); init_completion(&lun->lun_ref_comp); @@ -606,7 +605,6 @@ struct se_lun *core_tpg_alloc_lun( lun->unpacked_lun = unpacked_lun; lun->lun_link_magic = SE_LUN_LINK_MAGIC; atomic_set(&lun->lun_acl_count, 0); - init_completion(&lun->lun_shutdown_comp); spin_lock_init(&lun->lun_sep_lock); init_completion(&lun->lun_ref_comp); diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c index 965a308e10a5..7c0518a28186 100644 --- a/drivers/target/target_core_transport.c +++ b/drivers/target/target_core_transport.c @@ -2596,31 +2596,10 @@ void target_wait_for_sess_cmds(struct se_session *se_sess) } EXPORT_SYMBOL(target_wait_for_sess_cmds); -static int transport_clear_lun_ref_thread(void *p) +void transport_clear_lun_ref(struct se_lun *lun) { - struct se_lun *lun = p; - percpu_ref_kill(&lun->lun_ref); - wait_for_completion(&lun->lun_ref_comp); - complete(&lun->lun_shutdown_comp); - - return 0; -} - -int transport_clear_lun_ref(struct se_lun *lun) -{ - struct task_struct *kt; - - kt = kthread_run(transport_clear_lun_ref_thread, lun, - "tcm_cl_%u", lun->unpacked_lun); - if (IS_ERR(kt)) { - pr_err("Unable to start clear_lun thread\n"); - return PTR_ERR(kt); - } - wait_for_completion(&lun->lun_shutdown_comp); - - return 0; } /** |