[RFC PATCH v3 02/19] scsi: scsi_error: Move complete variable eh_action from shost to sdevice

From: JiangJianJun
Date: Thu Mar 13 2025 - 21:10:34 EST


From: Wenchao Hao <haowenchao2@xxxxxxxxxx>

eh_action is used to wait for error handle command's completion if scsi
command is send in error handle. Now the error handler might based on
scsi_device, so move it to scsi_device.

This is preparation for a genernal LUN/target based error handle
strategy.

Signed-off-by: Wenchao Hao <haowenchao2@xxxxxxxxxx>
---
drivers/scsi/scsi_error.c | 6 +++---
include/scsi/scsi_device.h | 2 ++
include/scsi/scsi_host.h | 2 --
3 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c
index f89de23a6807..4f37af9e20b6 100644
--- a/drivers/scsi/scsi_error.c
+++ b/drivers/scsi/scsi_error.c
@@ -916,7 +916,7 @@ void scsi_eh_done(struct scsi_cmnd *scmd)
SCSI_LOG_ERROR_RECOVERY(3, scmd_printk(KERN_INFO, scmd,
"%s result: %x\n", __func__, scmd->result));

- eh_action = scmd->device->host->eh_action;
+ eh_action = scmd->device->eh_action;
if (eh_action)
complete(eh_action);
}
@@ -1205,7 +1205,7 @@ static enum scsi_disposition scsi_send_eh_cmnd(struct scsi_cmnd *scmd,

retry:
scsi_eh_prep_cmnd(scmd, &ses, cmnd, cmnd_size, sense_bytes);
- shost->eh_action = &done;
+ sdev->eh_action = &done;

scsi_log_send(scmd);
scmd->submitter = SUBMITTED_BY_SCSI_ERROR_HANDLER;
@@ -1249,7 +1249,7 @@ static enum scsi_disposition scsi_send_eh_cmnd(struct scsi_cmnd *scmd,
rtn = SUCCESS;
}

- shost->eh_action = NULL;
+ sdev->eh_action = NULL;

scsi_log_completion(scmd, rtn);

diff --git a/include/scsi/scsi_device.h b/include/scsi/scsi_device.h
index 5911c82ca435..6388abb6c0d4 100644
--- a/include/scsi/scsi_device.h
+++ b/include/scsi/scsi_device.h
@@ -347,6 +347,8 @@ struct scsi_device {
enum scsi_device_state sdev_state;
struct task_struct *quiesced_by;
struct scsi_device_eh *eh;
+ struct completion *eh_action; /* Wait for specific actions */
+ /* on the device. */
unsigned long sdev_data[];
} __attribute__((aligned(sizeof(unsigned long))));

diff --git a/include/scsi/scsi_host.h b/include/scsi/scsi_host.h
index 26bc23419cfd..de014c60746c 100644
--- a/include/scsi/scsi_host.h
+++ b/include/scsi/scsi_host.h
@@ -558,8 +558,6 @@ struct Scsi_Host {
struct list_head eh_abort_list;
struct list_head eh_cmd_q;
struct task_struct * ehandler; /* Error recovery thread. */
- struct completion * eh_action; /* Wait for specific actions on the
- host. */
wait_queue_head_t host_wait;
const struct scsi_host_template *hostt;
struct scsi_transport_template *transportt;
--
2.33.0