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authorNicholas Bellinger <nab@linux-iscsi.org>2017-06-03 16:55:50 +0300
committerNicholas Bellinger <nab@linux-iscsi.org>2017-07-07 08:57:56 +0300
commit5465e7d3b99bbaa823ae4f8e538543e7d6cdc530 (patch)
tree7ab2a72489d5e29ef9da27181edabc5190713093 /include
parenteeb64d239ea664592ff8f1bce5546209a6593df5 (diff)
downloadlinux-5465e7d3b99bbaa823ae4f8e538543e7d6cdc530.tar.xz
target: Add TARGET_SCF_LOOKUP_LUN_FROM_TAG support for ABORT_TASK
This patch introduces support in target_submit_tmr() for locating a unpacked_lun from an existing se_cmd->tag during ABORT_TASK. When TARGET_SCF_LOOKUP_LUN_FROM_TAG is set, target_submit_tmr() will do the extra lookup via target_lookup_lun_from_tag() and subsequently invoke transport_lookup_tmr_lun() so a proper percpu se_lun->lun_ref is taken before workqueue dispatch into se_device->tmr_wq happens. Aside from the extra target_lookup_lun_from_tag(), the existing code-path remains unchanged. Reviewed-by: Himanshu Madhani <himanshu.madhani@cavium.com> Reviewed-by: Quinn Tran <quinn.tran@cavium.com> Cc: Mike Christie <mchristi@redhat.com> Cc: Hannes Reinecke <hare@suse.com> Cc: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'include')
-rw-r--r--include/target/target_core_base.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/include/target/target_core_base.h b/include/target/target_core_base.h
index 47d9f381209f..f835528e424e 100644
--- a/include/target/target_core_base.h
+++ b/include/target/target_core_base.h
@@ -188,7 +188,8 @@ enum target_sc_flags_table {
TARGET_SCF_BIDI_OP = 0x01,
TARGET_SCF_ACK_KREF = 0x02,
TARGET_SCF_UNKNOWN_SIZE = 0x04,
- TARGET_SCF_USE_CPUID = 0x08,
+ TARGET_SCF_USE_CPUID = 0x08,
+ TARGET_SCF_LOOKUP_LUN_FROM_TAG = 0x10,
};
/* fabric independent task management function values */