diff options
| author | Anatoliy Glagolev <glagolig@gmail.com> | 2018-12-06 16:48:45 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-12-05 15:34:43 +0100 |
| commit | f2970af1d3849139635a50ab4261505a8f3e44d7 (patch) | |
| tree | ae441a280a0273dba92d35a7f9a82c5452bcb7b1 /drivers/scsi/qla2xxx/tcm_qla2xxx.h | |
| parent | c041756df25eef38d9f29b29fa21c76bf062510d (diff) | |
scsi: qla2xxx: deadlock by configfs_depend_item
[ Upstream commit 17b18eaa6f59044a5172db7d07149e31ede0f920 ]
The intent of invoking configfs_depend_item in commit 7474f52a82d51
("tcm_qla2xxx: Perform configfs depend/undepend for base_tpg")
was to prevent a physical Fibre Channel port removal when
virtual (NPIV) ports announced through that physical port are active.
The change does not work as expected: it makes enabled physical port
dependent on target configfs subsystem (the port's parent), something
the configfs guarantees anyway.
Besides, scheduling work in a worker thread and waiting for the work's
completion is not really a valid workaround for the requirement not to call
configfs_depend_item from a configfs callback: the call occasionally
deadlocks.
Thus, removing configfs_depend_item calls does not break anything and fixes
the deadlock problem.
Signed-off-by: Anatoliy Glagolev <glagolig@gmail.com>
Acked-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/scsi/qla2xxx/tcm_qla2xxx.h')
| -rw-r--r-- | drivers/scsi/qla2xxx/tcm_qla2xxx.h | 3 |
1 files changed, 0 insertions, 3 deletions
diff --git a/drivers/scsi/qla2xxx/tcm_qla2xxx.h b/drivers/scsi/qla2xxx/tcm_qla2xxx.h index 37e026a4823d..8b70fa3105bd 100644 --- a/drivers/scsi/qla2xxx/tcm_qla2xxx.h +++ b/drivers/scsi/qla2xxx/tcm_qla2xxx.h @@ -48,9 +48,6 @@ struct tcm_qla2xxx_tpg { struct tcm_qla2xxx_tpg_attrib tpg_attrib; /* Returned by tcm_qla2xxx_make_tpg() */ struct se_portal_group se_tpg; - /* Items for dealing with configfs_depend_item */ - struct completion tpg_base_comp; - struct work_struct tpg_base_work; }; struct tcm_qla2xxx_fc_loopid { |