From 926347061ef1f4d3873829fd1960c6e4b965aa9f Mon Sep 17 00:00:00 2001 From: Mike Christie Date: Fri, 23 Jun 2017 01:18:12 -0500 Subject: target: break up free_device callback With this patch free_device is now used to free what is allocated in the alloc_device callback and destroy_device tears down the resources that are setup in the configure_device callback. This patch will be needed in the next patch where tcmu needs to be able to look up the device in the destroy callback. Signed-off-by: Mike Christie Reviewed-by: Bart Van Assche Signed-off-by: Nicholas Bellinger --- drivers/target/target_core_device.c | 2 ++ drivers/target/target_core_file.c | 7 ++++++- drivers/target/target_core_iblock.c | 8 ++++++-- drivers/target/target_core_pscsi.c | 7 ++++++- drivers/target/target_core_rd.c | 7 ++++++- drivers/target/target_core_user.c | 12 +++++++++--- 6 files changed, 35 insertions(+), 8 deletions(-) (limited to 'drivers') diff --git a/drivers/target/target_core_device.c b/drivers/target/target_core_device.c index 11c80c47b9d3..16a701fed66b 100644 --- a/drivers/target/target_core_device.c +++ b/drivers/target/target_core_device.c @@ -974,6 +974,8 @@ void target_free_device(struct se_device *dev) if (dev->dev_flags & DF_CONFIGURED) { destroy_workqueue(dev->tmr_wq); + dev->transport->destroy_device(dev); + mutex_lock(&g_device_mutex); list_del(&dev->g_dev_node); mutex_unlock(&g_device_mutex); diff --git a/drivers/target/target_core_file.c b/drivers/target/target_core_file.c index 73b8f93a5fef..50f235580546 100644 --- a/drivers/target/target_core_file.c +++ b/drivers/target/target_core_file.c @@ -236,6 +236,11 @@ static void fd_dev_call_rcu(struct rcu_head *p) } static void fd_free_device(struct se_device *dev) +{ + call_rcu(&dev->rcu_head, fd_dev_call_rcu); +} + +static void fd_destroy_device(struct se_device *dev) { struct fd_dev *fd_dev = FD_DEV(dev); @@ -243,7 +248,6 @@ static void fd_free_device(struct se_device *dev) filp_close(fd_dev->fd_file, NULL); fd_dev->fd_file = NULL; } - call_rcu(&dev->rcu_head, fd_dev_call_rcu); } static int fd_do_rw(struct se_cmd *cmd, struct file *fd, @@ -826,6 +830,7 @@ static const struct target_backend_ops fileio_ops = { .detach_hba = fd_detach_hba, .alloc_device = fd_alloc_device, .configure_device = fd_configure_device, + .destroy_device = fd_destroy_device, .free_device = fd_free_device, .parse_cdb = fd_parse_cdb, .set_configfs_dev_params = fd_set_configfs_dev_params, diff --git a/drivers/target/target_core_iblock.c b/drivers/target/target_core_iblock.c index b2044133d747..a5e16f715392 100644 --- a/drivers/target/target_core_iblock.c +++ b/drivers/target/target_core_iblock.c @@ -189,6 +189,11 @@ static void iblock_dev_call_rcu(struct rcu_head *p) } static void iblock_free_device(struct se_device *dev) +{ + call_rcu(&dev->rcu_head, iblock_dev_call_rcu); +} + +static void iblock_destroy_device(struct se_device *dev) { struct iblock_dev *ib_dev = IBLOCK_DEV(dev); @@ -196,8 +201,6 @@ static void iblock_free_device(struct se_device *dev) blkdev_put(ib_dev->ibd_bd, FMODE_WRITE|FMODE_READ|FMODE_EXCL); if (ib_dev->ibd_bio_set != NULL) bioset_free(ib_dev->ibd_bio_set); - - call_rcu(&dev->rcu_head, iblock_dev_call_rcu); } static unsigned long long iblock_emulate_read_cap_with_block_size( @@ -858,6 +861,7 @@ static const struct target_backend_ops iblock_ops = { .detach_hba = iblock_detach_hba, .alloc_device = iblock_alloc_device, .configure_device = iblock_configure_device, + .destroy_device = iblock_destroy_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 e0be4aa38328..7d944b23aeee 100644 --- a/drivers/target/target_core_pscsi.c +++ b/drivers/target/target_core_pscsi.c @@ -563,6 +563,11 @@ static void pscsi_dev_call_rcu(struct rcu_head *p) } static void pscsi_free_device(struct se_device *dev) +{ + call_rcu(&dev->rcu_head, pscsi_dev_call_rcu); +} + +static void pscsi_destroy_device(struct se_device *dev) { struct pscsi_dev_virt *pdv = PSCSI_DEV(dev); struct pscsi_hba_virt *phv = dev->se_hba->hba_ptr; @@ -592,7 +597,6 @@ static void pscsi_free_device(struct se_device *dev) pdv->pdv_sd = NULL; } - call_rcu(&dev->rcu_head, pscsi_dev_call_rcu); } static void pscsi_transport_complete(struct se_cmd *cmd, struct scatterlist *sg, @@ -1084,6 +1088,7 @@ static const struct target_backend_ops pscsi_ops = { .pmode_enable_hba = pscsi_pmode_enable_hba, .alloc_device = pscsi_alloc_device, .configure_device = pscsi_configure_device, + .destroy_device = pscsi_destroy_device, .free_device = pscsi_free_device, .transport_complete = pscsi_transport_complete, .parse_cdb = pscsi_parse_cdb, diff --git a/drivers/target/target_core_rd.c b/drivers/target/target_core_rd.c index d12967690054..a6e8106abd6f 100644 --- a/drivers/target/target_core_rd.c +++ b/drivers/target/target_core_rd.c @@ -338,11 +338,15 @@ static void rd_dev_call_rcu(struct rcu_head *p) } static void rd_free_device(struct se_device *dev) +{ + call_rcu(&dev->rcu_head, rd_dev_call_rcu); +} + +static void rd_destroy_device(struct se_device *dev) { struct rd_dev *rd_dev = RD_DEV(dev); rd_release_device_space(rd_dev); - call_rcu(&dev->rcu_head, rd_dev_call_rcu); } static struct rd_dev_sg_table *rd_get_sg_table(struct rd_dev *rd_dev, u32 page) @@ -651,6 +655,7 @@ static const struct target_backend_ops rd_mcp_ops = { .detach_hba = rd_detach_hba, .alloc_device = rd_alloc_device, .configure_device = rd_configure_device, + .destroy_device = rd_destroy_device, .free_device = rd_free_device, .parse_cdb = rd_parse_cdb, .set_configfs_dev_params = rd_set_configfs_dev_params, diff --git a/drivers/target/target_core_user.c b/drivers/target/target_core_user.c index ca5b081295db..e58127b8db8a 100644 --- a/drivers/target/target_core_user.c +++ b/drivers/target/target_core_user.c @@ -1379,6 +1379,14 @@ static void tcmu_blocks_release(struct tcmu_dev *udev) } static void tcmu_free_device(struct se_device *dev) +{ + struct tcmu_dev *udev = TCMU_DEV(dev); + + /* release ref from init */ + kref_put(&udev->kref, tcmu_dev_kref_release); +} + +static void tcmu_destroy_device(struct se_device *dev) { struct tcmu_dev *udev = TCMU_DEV(dev); struct tcmu_cmd *cmd; @@ -1411,9 +1419,6 @@ static void tcmu_free_device(struct se_device *dev) uio_unregister_device(&udev->uio_info); } - - /* release ref from init */ - kref_put(&udev->kref, tcmu_dev_kref_release); } enum { @@ -1705,6 +1710,7 @@ static struct target_backend_ops tcmu_ops = { .detach_hba = tcmu_detach_hba, .alloc_device = tcmu_alloc_device, .configure_device = tcmu_configure_device, + .destroy_device = tcmu_destroy_device, .free_device = tcmu_free_device, .parse_cdb = tcmu_parse_cdb, .set_configfs_dev_params = tcmu_set_configfs_dev_params, -- cgit v1.2.3-58-ga151