[PATCH 0/1] [bionic hwe kernel] scsi: Revert "target/core: Inline transport_lun_remove_cmd()"

[Pavel Zakharov]

BugLink: https://bugs.launchpad.net/ubuntu/+source/linux-hwe/+bug/1862682

Disclaimer: First time submitting patch to Ubuntu kernel team, so apologies if
the formatting is not correct. I’ve used the mailing list archives and
https://wiki.ubuntu.com/Kernel/Dev/KernelPatches for reference.

iSCSI LUN deletion hangs because a reference is not dropped on the LUN being
deleted until another command is sent from the same initiator. This was
introduced in 5.3 because of code simplification. Note: this patch is for
the hwe kernel for bionic.

[Impact]
This greatly affects iSCSI Target workflows that regularly create and destroy
LUNs.

[Fix]
Revert the code simplification as it is incompatible with the iSCSI target
driver.

[Test]
Verified that reverting the original code resolves the hang when deleting iSCSI
LUNs.

[Regression Risk]
Very low. There are no code dependencies on the original code simplification.


Bart Van Assche:
  scsi: Revert "target/core: Inline transport_lun_remove_cmd()"
 
 drivers/target/target_core_transport.c | 31 ++++++++++++++++++++++++++++---
 1 file changed, 28 insertions(+), 3 deletions(-)

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