From: Mike Christie <mchristi@xxxxxxxxxx>
Instead of waiting for commands, map the lun reset operation
to a queue reset.
We do not check the result of blk_reset_queue because if
it works then we need to wait for the bio/request completions
and if it failed we might as wait and hope like we did before.
Signed-off-by: Mike Christie <mchristi@xxxxxxxxxx>
---
drivers/target/target_core_file.c | 12 ++++++++++++
drivers/target/target_core_iblock.c | 8 ++++++++
drivers/target/target_core_pscsi.c | 8 ++++++++
drivers/target/target_core_tmr.c | 3 +++
include/target/target_core_backend.h | 1 +
5 files changed, 32 insertions(+)
diff --git a/drivers/target/target_core_file.c b/drivers/target/target_core_file.c
index 75f0f08..d6af1f2 100644
--- a/drivers/target/target_core_file.c
+++ b/drivers/target/target_core_file.c
@@ -97,6 +97,17 @@ static struct se_device *fd_alloc_device(struct se_hba *hba, const char *name)
return &fd_dev->dev;
}
+static int fd_reset_device(struct se_device *dev)
+{
+ struct fd_dev *fd_dev = FD_DEV(dev);
+ struct inode *inode;
+
+ inode = fd_dev->fd_file->f_mapping->host;
+ if (!S_ISBLK(inode->i_mode))
+ return -EOPNOTSUPP;
+ return blk_reset_queue(bdev_get_queue(inode->i_bdev));
+}
+
static int fd_configure_device(struct se_device *dev)
{
struct fd_dev *fd_dev = FD_DEV(dev);
@@ -813,6 +824,7 @@ static const struct target_backend_ops fileio_ops = {
.attach_hba = fd_attach_hba,
.detach_hba = fd_detach_hba,
.alloc_device = fd_alloc_device,
+ .reset_device = fd_reset_device,
.configure_device = fd_configure_device,
.free_device = fd_free_device,
.parse_cdb = fd_parse_cdb,
diff --git a/drivers/target/target_core_iblock.c b/drivers/target/target_core_iblock.c
index 7c4efb4..0a7dd59 100644
--- a/drivers/target/target_core_iblock.c
+++ b/drivers/target/target_core_iblock.c
@@ -79,6 +79,13 @@ static struct se_device *iblock_alloc_device(struct se_hba *hba, const char *nam
return &ib_dev->dev;
}
+static int iblock_reset_device(struct se_device *dev)
+{
+ struct iblock_dev *ib_dev = IBLOCK_DEV(dev);
+
+ return blk_reset_queue(bdev_get_queue(ib_dev->ibd_bd));
+}
+
static int iblock_configure_device(struct se_device *dev)
{
struct iblock_dev *ib_dev = IBLOCK_DEV(dev);
@@ -848,6 +855,7 @@ static const struct target_backend_ops iblock_ops = {
.detach_hba = iblock_detach_hba,
.alloc_device = iblock_alloc_device,
.configure_device = iblock_configure_device,
+ .reset_device = iblock_reset_device,
.free_device = iblock_free_device,
.parse_cdb = iblock_parse_cdb,
.set_configfs_dev_params = iblock_set_configfs_dev_params,
diff --git a/drivers/target/target_core_pscsi.c b/drivers/target/target_core_pscsi.c
index de18790..fa0505b 100644
--- a/drivers/target/target_core_pscsi.c
+++ b/drivers/target/target_core_pscsi.c
@@ -455,6 +455,13 @@ static int pscsi_create_type_other(struct se_device *dev,
return 0;
}
+static int pscsi_reset_device(struct se_device *dev)
+{
+ struct pscsi_dev_virt *pdv = PSCSI_DEV(dev);
+
+ return blk_reset_queue(pdv->pdv_sd->request_queue);
+}
+
static int pscsi_configure_device(struct se_device *dev)
{
struct se_hba *hba = dev->se_hba;
@@ -1131,6 +1138,7 @@ static const struct target_backend_ops pscsi_ops = {
.detach_hba = pscsi_detach_hba,
.pmode_enable_hba = pscsi_pmode_enable_hba,
.alloc_device = pscsi_alloc_device,
+ .reset_device = pscsi_reset_device,
.configure_device = pscsi_configure_device,
.free_device = pscsi_free_device,
.transport_complete = pscsi_transport_complete,
diff --git a/drivers/target/target_core_tmr.c b/drivers/target/target_core_tmr.c
index 4f229e7..609ec53 100644
--- a/drivers/target/target_core_tmr.c
+++ b/drivers/target/target_core_tmr.c
@@ -431,6 +431,9 @@ int core_tmr_lun_reset(
(preempt_and_abort_list) ? "Preempt" : "TMR",
dev->transport->name, tas);
+ if (dev->transport->reset_device(dev))
+ dev->transport->reset_device(dev);
+
core_tmr_drain_tmr_list(dev, tmr, preempt_and_abort_list);
core_tmr_drain_state_list(dev, prout_cmd, tmr_sess, tas,
preempt_and_abort_list);
diff --git a/include/target/target_core_backend.h b/include/target/target_core_backend.h
index 28ee5c2..a055e4f 100644
--- a/include/target/target_core_backend.h
+++ b/include/target/target_core_backend.h
@@ -17,6 +17,7 @@ struct target_backend_ops {
struct se_device *(*alloc_device)(struct se_hba *, const char *);
int (*configure_device)(struct se_device *);
+ int (*reset_device)(struct se_device *);
void (*free_device)(struct se_device *device);
ssize_t (*set_configfs_dev_params)(struct se_device *,
--
2.7.2
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