[PATCH v7 17/27] scsi-multipath: revalidate paths upon device unblock
John Garry <[email protected]>
| Newsgroups | org.infradead.lists.linux-nvme,dev.linux.lists.dm-devel,org.kernel.vger.linux-kernel,org.kernel.vger.linux-scsi |
|---|---|
| Message-ID | <[email protected]> |
From: John Garry <[email protected]> When a scsi_device is unblocked, we need revalidate paths which means that we clear paths and requeue any queued bios. Signed-off-by: John Garry <[email protected]> --- drivers/scsi/scsi_lib.c | 2 ++ drivers/scsi/scsi_multipath.c | 8 ++++++++ include/scsi/scsi_multipath.h | 5 +++++ 3 files changed, 15 insertions(+) diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index f02b3a50e20cd..189263ce56624 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -3093,6 +3093,8 @@ static int scsi_internal_device_unblock(struct scsi_device *sdev, mutex_lock(&sdev->state_mutex); ret = scsi_internal_device_unblock_nowait(sdev, new_state); mutex_unlock(&sdev->state_mutex); + if ((ret == 0) && sdev->scsi_mpath_dev) + scsi_mpath_revalidate_paths(sdev->scsi_mpath_dev); return ret; } diff --git a/drivers/scsi/scsi_multipath.c b/drivers/scsi/scsi_multipath.c index b16fe6a55fa73..456351fee4b98 100644 --- a/drivers/scsi/scsi_multipath.c +++ b/drivers/scsi/scsi_multipath.c @@ -238,6 +238,14 @@ static int scsi_multipath_sdev_init(struct scsi_device *sdev) return 0; } +void scsi_mpath_revalidate_paths(struct scsi_mpath_device *scsi_mpath_dev) +{ + struct scsi_mpath_head *scsi_mpath_head = scsi_mpath_dev->scsi_mpath_head; + struct mpath_head *mpath_head = &scsi_mpath_head->mpath_head; + + mpath_revalidate_paths(mpath_head); +} + void scsi_mpath_dev_clear_path(struct scsi_mpath_device *scsi_mpath_dev) { struct mpath_device *mpath_device = &scsi_mpath_dev->mpath_device; diff --git a/include/scsi/scsi_multipath.h b/include/scsi/scsi_multipath.h index 2064a3e922748..6e50da94fc5dd 100644 --- a/include/scsi/scsi_multipath.h +++ b/include/scsi/scsi_multipath.h @@ -56,6 +56,7 @@ void scsi_mpath_put_head(struct scsi_mpath_head *scsi_mpath_head); void scsi_mpath_add_sysfs_link(struct scsi_device *sdev); void scsi_mpath_remove_sysfs_link(struct scsi_device *sdev); void scsi_mpath_dev_clear_path(struct scsi_mpath_device *scsi_mpath_dev); +void scsi_mpath_revalidate_paths(struct scsi_mpath_device *scsi_mpath_dev); #else /* CONFIG_SCSI_MULTIPATH */ struct scsi_mpath_head { @@ -104,5 +105,9 @@ static inline void scsi_mpath_dev_clear_path(struct scsi_mpath_device *scsi_mpath_dev) { } +static inline +void scsi_mpath_revalidate_paths(struct scsi_mpath_device *scsi_mpath_dev) +{ +} #endif /* CONFIG_SCSI_MULTIPATH */ #endif /* _SCSI_SCSI_MULTIPATH_H */ -- 2.43.7