diff options
| author |   Bodo Stroesser <bstroesser@ts.fujitsu.com> | 2020-07-26 17:35:05 +0200 |
|---|---|---|
| committer |   Martin K. Petersen <martin.petersen@oracle.com> | 2020-07-28 22:25:27 -0400 |
| commit | a35129024e88cbb96c6fe93233a625be5b122311 (patch) | |
| tree | 5c6124fbaa31c29f3846b1761df81de78ce3cd50 /drivers/target | |
| parent | scsi: target: Add tmr_notify backend function (diff) | |
| download | linux-dev-a35129024e88cbb96c6fe93233a625be5b122311.tar.xz linux-dev-a35129024e88cbb96c6fe93233a625be5b122311.zip | |
scsi: target: tcmu: Use priv pointer in se_cmd
We initialize and clean up the se_cmd's priv pointer under cmd_ring_lock to
point to the corresponding tcmu_cmd.
In the patch that implements tmr_notify callback in tcmu we will use the
priv pointer.
Link: https://lore.kernel.org/r/20200726153510.13077-4-bstroesser@ts.fujitsu.com
Reviewed-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: Bodo Stroesser <bstroesser@ts.fujitsu.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/target')
| -rw-r--r-- | drivers/target/target_core_user.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/target/target_core_user.c b/drivers/target/target_core_user.c index 366878b0b2fd..b06b18d1b135 100644 --- a/drivers/target/target_core_user.c +++ b/drivers/target/target_core_user.c @@ -541,6 +541,8 @@ tcmu_get_block_page(struct tcmu_dev *udev, uint32_t dbi) static inline void tcmu_free_cmd(struct tcmu_cmd *tcmu_cmd) { + if (tcmu_cmd->se_cmd) + tcmu_cmd->se_cmd->priv = NULL; kfree(tcmu_cmd->dbi); kmem_cache_free(tcmu_cmd_cache, tcmu_cmd); } @@ -1109,10 +1111,11 @@ tcmu_queue_cmd(struct se_cmd *se_cmd) return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; mutex_lock(&udev->cmdr_lock); + se_cmd->priv = tcmu_cmd; ret = queue_cmd_ring(tcmu_cmd, &scsi_ret); - mutex_unlock(&udev->cmdr_lock); if (ret < 0) tcmu_free_cmd(tcmu_cmd); + mutex_unlock(&udev->cmdr_lock); return scsi_ret; } @@ -1179,7 +1182,6 @@ done: target_complete_cmd(cmd->se_cmd, entry->rsp.scsi_status); out: - cmd->se_cmd = NULL; tcmu_cmd_free_data(cmd, cmd->dbi_cnt); tcmu_free_cmd(cmd); } @@ -1285,6 +1287,7 @@ static void tcmu_check_expired_ring_cmd(struct tcmu_cmd *cmd) set_bit(TCMU_CMD_BIT_EXPIRED, &cmd->flags); list_del_init(&cmd->queue_entry); se_cmd = cmd->se_cmd; + se_cmd->priv = NULL; cmd->se_cmd = NULL; pr_debug("Timing out inflight cmd %u on dev %s.\n", |