diff options
| author | Nicholas Bellinger <nab@linux-iscsi.org> | 2016-01-30 09:08:54 +0300 |
|---|---|---|
| committer | Nicholas Bellinger <nab@linux-iscsi.org> | 2016-03-11 08:48:23 +0300 |
| commit | 91973cd60e2db7536228ce2732ffea4e50d03ca9 (patch) | |
| tree | 0942363ef2dea335def38fa5bf3fa9f3f0c66752 /drivers/target/tcm_fc/tfc_cmd.c | |
| parent | fa22e7b7741b202ee8f0cb28461189418d9b52ea (diff) | |
| download | linux-91973cd60e2db7536228ce2732ffea4e50d03ca9.tar.xz | |
tcm_fc: Convert to TARGET_SCF_ACK_KREF I/O + TMR krefs
This patch converts tcm_fc to modern TARGET_SCF_ACK_KREF
usage for ft_queue_status(), and fixes ft_check_stop_free()
to return transport_generic_free_cmd() for ->cmd_kref.
It also converts TM request -> ft_send_tm() to use ACK_KREF,
and update ft_queue_tm_resp() to drop the outstanding kref
after queueing TM response into fabric code.
Cc: Vasu Dev <vasu.dev@linux.intel.com>
Cc: Mark Rustad <mark.d.rustad@intel.com>
Cc: Robert Love <robert.w.love@intel.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'drivers/target/tcm_fc/tfc_cmd.c')
| -rw-r--r-- | drivers/target/tcm_fc/tfc_cmd.c | 20 |
1 files changed, 16 insertions, 4 deletions
diff --git a/drivers/target/tcm_fc/tfc_cmd.c b/drivers/target/tcm_fc/tfc_cmd.c index 064d6dfb5b6d..216e18cc9133 100644 --- a/drivers/target/tcm_fc/tfc_cmd.c +++ b/drivers/target/tcm_fc/tfc_cmd.c @@ -107,8 +107,7 @@ void ft_release_cmd(struct se_cmd *se_cmd) int ft_check_stop_free(struct se_cmd *se_cmd) { - transport_generic_free_cmd(se_cmd, 0); - return 1; + return transport_generic_free_cmd(se_cmd, 0); } /* @@ -179,6 +178,12 @@ int ft_queue_status(struct se_cmd *se_cmd) return -ENOMEM; } lport->tt.exch_done(cmd->seq); + /* + * Drop the extra ACK_KREF reference taken by target_submit_cmd() + * ahead of ft_check_stop_free() -> transport_generic_free_cmd() + * final se_cmd->cmd_kref put. + */ + target_put_sess_cmd(&cmd->se_cmd); return 0; } @@ -387,7 +392,7 @@ static void ft_send_tm(struct ft_cmd *cmd) /* FIXME: Add referenced task tag for ABORT_TASK */ rc = target_submit_tmr(&cmd->se_cmd, cmd->sess->se_sess, &cmd->ft_sense_buffer[0], scsilun_to_int(&fcp->fc_lun), - cmd, tm_func, GFP_KERNEL, 0, 0); + cmd, tm_func, GFP_KERNEL, 0, TARGET_SCF_ACK_KREF); if (rc < 0) ft_send_resp_code_and_free(cmd, FCP_TMF_FAILED); } @@ -422,6 +427,12 @@ void ft_queue_tm_resp(struct se_cmd *se_cmd) pr_debug("tmr fn %d resp %d fcp code %d\n", tmr->function, tmr->response, code); ft_send_resp_code(cmd, code); + /* + * Drop the extra ACK_KREF reference taken by target_submit_tmr() + * ahead of ft_check_stop_free() -> transport_generic_free_cmd() + * final se_cmd->cmd_kref put. + */ + target_put_sess_cmd(&cmd->se_cmd); } void ft_aborted_task(struct se_cmd *se_cmd) @@ -560,7 +571,8 @@ static void ft_send_work(struct work_struct *work) */ if (target_submit_cmd(&cmd->se_cmd, cmd->sess->se_sess, fcp->fc_cdb, &cmd->ft_sense_buffer[0], scsilun_to_int(&fcp->fc_lun), - ntohl(fcp->fc_dl), task_attr, data_dir, 0)) + ntohl(fcp->fc_dl), task_attr, data_dir, + TARGET_SCF_ACK_KREF)) goto err; pr_debug("r_ctl %x alloc target_submit_cmd\n", fh->fh_r_ctl); |