diff options
| author | Dan Williams <dan.j.williams@intel.com> | 2012-06-21 23:30:48 -0700 |
|---|---|---|
| committer | James Bottomley <JBottomley@Parallels.com> | 2012-07-20 08:58:50 +0100 |
| commit | 5db45bdc87ce4f503947adf7896586d60c63322c (patch) | |
| tree | f939bbcf1e6fc2664c54b46949eb8e5af8aa070b /include/scsi | |
| parent | b9d5c6b7ef570bea0d22746944d7b58fa7f17b13 (diff) | |
[SCSI] libsas: enforce eh strategy handlers only in eh context
The strategy handlers may be called in places that are problematic for
libsas (i.e. sata resets outside of domain revalidation filtering /
libata link recovery), or problematic for userspace (non-blocking ioctl
to sleeping reset functions). However, these routines are also called
for eh escalations and recovery of scsi_eh_prep_cmnd(), so permit them
as long as we are running in the host's error handler, otherwise arrange
for them to be triggered in eh_context.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to 'include/scsi')
| -rw-r--r-- | include/scsi/libsas.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/include/scsi/libsas.h b/include/scsi/libsas.h index 814d8cb592a..df9cefdf2a8 100644 --- a/include/scsi/libsas.h +++ b/include/scsi/libsas.h @@ -176,10 +176,17 @@ struct sata_device { u8 fis[ATA_RESP_FIS_SIZE]; }; +struct ssp_device { + struct list_head eh_list_node; /* pending a user requested eh action */ + struct scsi_lun reset_lun; +}; + enum { SAS_DEV_GONE, SAS_DEV_DESTROY, SAS_DEV_EH_PENDING, + SAS_DEV_LU_RESET, + SAS_DEV_RESET, }; struct domain_device { @@ -213,6 +220,7 @@ struct domain_device { union { struct expander_device ex_dev; struct sata_device sata_dev; /* STP & directly attached */ + struct ssp_device ssp_dev; }; void *lldd_dev; @@ -389,6 +397,8 @@ struct sas_ha_struct { unsigned long state; spinlock_t lock; int eh_active; + wait_queue_head_t eh_wait_q; + struct list_head eh_dev_q; struct mutex disco_mutex; |