diff options
| author | Ming Lei <ming.lei@redhat.com> | 2024-06-19 04:38:03 +0300 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2024-06-26 05:12:50 +0300 |
| commit | b402a0dce64aa3e14a9bd15ab1dd87a93967f90c (patch) | |
| tree | ec54b992d4e267bcda162bc7352f33f3cd26232c /drivers/scsi/scsi_debug.c | |
| parent | 57619f3cdeb5ae9f4252833b0ed600e9f81da722 (diff) | |
| download | linux-b402a0dce64aa3e14a9bd15ab1dd87a93967f90c.tar.xz | |
scsi: scsi_debug: Fix create target debugfs failure
Target debugfs entry is removed via async_schedule() which isn't drained
when adding same name target, so failure of "Directory 'target11:0:0' with
parent 'scsi_debug' already present!" can be triggered easily.
Fix it by switching to domain async schedule, and draining it before
adding new target debugfs entry.
Cc: Wenchao Hao <haowenchao2@huawei.com>
Fixes: f084fe52c640 ("scsi: scsi_debug: Add debugfs interface to fail target reset")
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Acked-by: Wenchao Hao <haowenchao22@gmail.com>
Link: https://lore.kernel.org/r/20240619013803.3008857-1-ming.lei@redhat.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/scsi_debug.c')
| -rw-r--r-- | drivers/scsi/scsi_debug.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c index acf0592d63da..91f022fb8d0c 100644 --- a/drivers/scsi/scsi_debug.c +++ b/drivers/scsi/scsi_debug.c @@ -926,6 +926,7 @@ static const int device_qfull_result = static const int condition_met_result = SAM_STAT_CONDITION_MET; static struct dentry *sdebug_debugfs_root; +static ASYNC_DOMAIN_EXCLUSIVE(sdebug_async_domain); static void sdebug_err_free(struct rcu_head *head) { @@ -1148,6 +1149,8 @@ static int sdebug_target_alloc(struct scsi_target *starget) if (!targetip) return -ENOMEM; + async_synchronize_full_domain(&sdebug_async_domain); + targetip->debugfs_entry = debugfs_create_dir(dev_name(&starget->dev), sdebug_debugfs_root); @@ -1174,7 +1177,8 @@ static void sdebug_target_destroy(struct scsi_target *starget) targetip = (struct sdebug_target_info *)starget->hostdata; if (targetip) { starget->hostdata = NULL; - async_schedule(sdebug_tartget_cleanup_async, targetip); + async_schedule_domain(sdebug_tartget_cleanup_async, targetip, + &sdebug_async_domain); } } |