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scsi: target: Abstract tag freeing

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Introduce target_free_tag() and convert all drivers to use it.

Signed-off-by: Matthew Wilcox <willy@infradead.org>
Reviewed-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Matthew Wilcox 2018-06-12 12:05:43 -07:00 committed by Martin K. Petersen
parent ba80917d99
commit 83c2b54b92
8 changed files with 14 additions and 11 deletions
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4
drivers/scsi/qla2xxx/qla_target.c
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@ -3783,7 +3783,7 @@ void qlt_free_cmd(struct qla_tgt_cmd *cmd)
return; return;
} }
cmd->jiffies_at_free = get_jiffies_64(); cmd->jiffies_at_free = get_jiffies_64();
percpu_ida_free(&sess->se_sess->sess_tag_pool, cmd->se_cmd.map_tag); target_free_tag(sess->se_sess, &cmd->se_cmd);
} }
EXPORT_SYMBOL(qlt_free_cmd); EXPORT_SYMBOL(qlt_free_cmd);
@ -4146,7 +4146,7 @@ out_term:
qlt_send_term_exchange(qpair, NULL, &cmd->atio, 1, 0); qlt_send_term_exchange(qpair, NULL, &cmd->atio, 1, 0);
qlt_decr_num_pend_cmds(vha); qlt_decr_num_pend_cmds(vha);
percpu_ida_free(&sess->se_sess->sess_tag_pool, cmd->se_cmd.map_tag); target_free_tag(sess->se_sess, &cmd->se_cmd);
spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
spin_lock_irqsave(&ha->tgt.sess_lock, flags); spin_lock_irqsave(&ha->tgt.sess_lock, flags);

2
drivers/target/iscsi/iscsi_target_util.c
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@ -711,7 +711,7 @@ void iscsit_release_cmd(struct iscsi_cmd *cmd)
kfree(cmd->iov_data); kfree(cmd->iov_data);
kfree(cmd->text_in_ptr); kfree(cmd->text_in_ptr);
percpu_ida_free(&sess->se_sess->sess_tag_pool, se_cmd->map_tag); target_free_tag(sess->se_sess, se_cmd);
} }
EXPORT_SYMBOL(iscsit_release_cmd); EXPORT_SYMBOL(iscsit_release_cmd);

2
drivers/target/sbp/sbp_target.c
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@ -1460,7 +1460,7 @@ static void sbp_free_request(struct sbp_target_request *req)
kfree(req->pg_tbl); kfree(req->pg_tbl);
kfree(req->cmd_buf); kfree(req->cmd_buf);
percpu_ida_free(&se_sess->sess_tag_pool, se_cmd->map_tag); target_free_tag(se_sess, se_cmd);
} }
static void sbp_mgt_agent_process(struct work_struct *work) static void sbp_mgt_agent_process(struct work_struct *work)

4
drivers/target/tcm_fc/tfc_cmd.c
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@ -92,7 +92,7 @@ static void ft_free_cmd(struct ft_cmd *cmd)
if (fr_seq(fp)) if (fr_seq(fp))
fc_seq_release(fr_seq(fp)); fc_seq_release(fr_seq(fp));
fc_frame_free(fp); fc_frame_free(fp);
percpu_ida_free(&sess->se_sess->sess_tag_pool, cmd->se_cmd.map_tag); target_free_tag(sess->se_sess, &cmd->se_cmd);
ft_sess_put(sess); /* undo get from lookup at recv */ ft_sess_put(sess); /* undo get from lookup at recv */
} }
@ -461,7 +461,7 @@ static void ft_recv_cmd(struct ft_sess *sess, struct fc_frame *fp)
cmd->sess = sess; cmd->sess = sess;
cmd->seq = fc_seq_assign(lport, fp); cmd->seq = fc_seq_assign(lport, fp);
if (!cmd->seq) { if (!cmd->seq) {
percpu_ida_free(&se_sess->sess_tag_pool, tag); target_free_tag(se_sess, &cmd->se_cmd);
goto busy; goto busy;
} }
cmd->req_frame = fp; /* hold frame during cmd */ cmd->req_frame = fp; /* hold frame during cmd */

2
drivers/usb/gadget/function/f_tcm.c
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@ -1288,7 +1288,7 @@ static void usbg_release_cmd(struct se_cmd *se_cmd)
struct se_session *se_sess = se_cmd->se_sess; struct se_session *se_sess = se_cmd->se_sess;
kfree(cmd->data_buf); kfree(cmd->data_buf);
percpu_ida_free(&se_sess->sess_tag_pool, se_cmd->map_tag); target_free_tag(se_sess, se_cmd);
} }
static u32 usbg_sess_get_index(struct se_session *se_sess) static u32 usbg_sess_get_index(struct se_session *se_sess)

2
drivers/vhost/scsi.c
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@ -324,7 +324,7 @@ static void vhost_scsi_release_cmd(struct se_cmd *se_cmd)
} }
vhost_scsi_put_inflight(tv_cmd->inflight); vhost_scsi_put_inflight(tv_cmd->inflight);
percpu_ida_free(&se_sess->sess_tag_pool, se_cmd->map_tag); target_free_tag(se_sess, se_cmd);
} }
static u32 vhost_scsi_sess_get_index(struct se_session *se_sess) static u32 vhost_scsi_sess_get_index(struct se_session *se_sess)

4
drivers/xen/xen-scsiback.c
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@ -1377,9 +1377,7 @@ static int scsiback_check_stop_free(struct se_cmd *se_cmd)
static void scsiback_release_cmd(struct se_cmd *se_cmd) static void scsiback_release_cmd(struct se_cmd *se_cmd)
{ {
struct se_session *se_sess = se_cmd->se_sess; target_free_tag(se_cmd->se_sess, se_cmd);
percpu_ida_free(&se_sess->sess_tag_pool, se_cmd->map_tag);
} }
static u32 scsiback_sess_get_index(struct se_session *se_sess) static u32 scsiback_sess_get_index(struct se_session *se_sess)

5
include/target/target_core_base.h
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@ -934,4 +934,9 @@ static inline void atomic_dec_mb(atomic_t *v)
smp_mb__after_atomic(); smp_mb__after_atomic();
} }
static inline void target_free_tag(struct se_session *sess, struct se_cmd *cmd)
{
percpu_ida_free(&sess->sess_tag_pool, cmd->map_tag);
}
#endif /* TARGET_CORE_BASE_H */ #endif /* TARGET_CORE_BASE_H */