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| author | Sreekanth Reddy <sreekanth.reddy@broadcom.com> | 2022-08-04 18:42:26 +0530 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2022-08-31 23:39:57 -0400 |
| commit | 7f90bc70d1a6ab024cfe2512f5ba8e93ed45a35d (patch) | |
| tree | 5e55ccfa580e7454856c2421e61e225554779603 /drivers/scsi/mpi3mr/mpi3mr_os.c | |
| parent | 2745ce0e6d30e66a97bc6c236cde3356812a3496 (diff) | |
| download | linux-7f90bc70d1a6ab024cfe2512f5ba8e93ed45a35d.tar.gz linux-7f90bc70d1a6ab024cfe2512f5ba8e93ed45a35d.tar.bz2 linux-7f90bc70d1a6ab024cfe2512f5ba8e93ed45a35d.zip | |
scsi: mpi3mr: Block I/Os while refreshing target dev objects
Block the I/Os on the target devices until corresponding target device's
target dev objects are refreshed as part of post controller reset
operation.
Link: https://lore.kernel.org/r/20220804131226.16653-16-sreekanth.reddy@broadcom.com
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Sreekanth Reddy <sreekanth.reddy@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/mpi3mr/mpi3mr_os.c')
| -rw-r--r-- | drivers/scsi/mpi3mr/mpi3mr_os.c | 25 |
1 files changed, 15 insertions, 10 deletions
diff --git a/drivers/scsi/mpi3mr/mpi3mr_os.c b/drivers/scsi/mpi3mr/mpi3mr_os.c index d787d0f5a031..22f1a06b748e 100644 --- a/drivers/scsi/mpi3mr/mpi3mr_os.c +++ b/drivers/scsi/mpi3mr/mpi3mr_os.c @@ -424,6 +424,8 @@ void mpi3mr_invalidate_devhandles(struct mpi3mr_ioc *mrioc) tgt_priv->io_throttle_enabled = 0; tgt_priv->io_divert = 0; tgt_priv->throttle_group = NULL; + if (tgtdev->host_exposed) + atomic_set(&tgt_priv->block_io, 1); } } } @@ -827,6 +829,7 @@ void mpi3mr_remove_tgtdev_from_host(struct mpi3mr_ioc *mrioc, __func__, tgtdev->dev_handle, (unsigned long long)tgtdev->wwid); if (tgtdev->starget && tgtdev->starget->hostdata) { tgt_priv = tgtdev->starget->hostdata; + atomic_set(&tgt_priv->block_io, 0); tgt_priv->dev_handle = MPI3MR_INVALID_DEV_HANDLE; } @@ -1069,6 +1072,8 @@ static void mpi3mr_update_tgtdev(struct mpi3mr_ioc *mrioc, scsi_tgt_priv_data->dev_type = tgtdev->dev_type; scsi_tgt_priv_data->io_throttle_enabled = tgtdev->io_throttle_enabled; + if (is_added == true) + atomic_set(&scsi_tgt_priv_data->block_io, 0); } switch (dev_pg0->access_status) { @@ -4569,6 +4574,16 @@ static int mpi3mr_qcmd(struct Scsi_Host *shost, stgt_priv_data = sdev_priv_data->tgt_priv_data; + if (atomic_read(&stgt_priv_data->block_io)) { + if (mrioc->stop_drv_processing) { + scmd->result = DID_NO_CONNECT << 16; + scsi_done(scmd); + goto out; + } + retval = SCSI_MLQUEUE_DEVICE_BUSY; + goto out; + } + dev_handle = stgt_priv_data->dev_handle; if (dev_handle == MPI3MR_INVALID_DEV_HANDLE) { scmd->result = DID_NO_CONNECT << 16; @@ -4581,16 +4596,6 @@ static int mpi3mr_qcmd(struct Scsi_Host *shost, goto out; } - if (atomic_read(&stgt_priv_data->block_io)) { - if (mrioc->stop_drv_processing) { - scmd->result = DID_NO_CONNECT << 16; - scsi_done(scmd); - goto out; - } - retval = SCSI_MLQUEUE_DEVICE_BUSY; - goto out; - } - if (stgt_priv_data->dev_type == MPI3_DEVICE_DEVFORM_PCIE) is_pcie_dev = 1; if ((scmd->cmnd[0] == UNMAP) && is_pcie_dev && |