target/pscsi: Only emulate REPORT_LUNS for passthrough
This patch changes back the pSCSI backend to follow pre 3.6-queue code to
passthrough SPC-3 persistent reservations + SPC-2 legacy reservation
handling to the underlying LLD / physical hardware.
For folks who really need this for their own SPC-3 emulation logic, avoid
changing the functionality of this beyond what is exported for REPORT_LUNS
for existing code, and to avoid problems with SPC-3 PR/ALUA as INQUIRY
EVPD=0x83 emulation needs to be in place in order for this to work as
expected with spc_parse_cdb() code..
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
diff --git a/drivers/target/target_core_pscsi.c b/drivers/target/target_core_pscsi.c
index 9a776cc..cb4c6b1 100644
--- a/drivers/target/target_core_pscsi.c
+++ b/drivers/target/target_core_pscsi.c
@@ -1061,18 +1061,12 @@
pscsi_clear_cdb_lun(cdb);
/*
- * For REPORT LUNS we always need to emulate the respone, and for everything
- * related to persistent reservations and ALUA we might optionally use our
- * handlers before passing on the command to the physical hardware.
+ * For REPORT LUNS we always need to emulate the response, for everything
+ * else the default for pSCSI is to pass the command to the underlying
+ * LLD / physical hardware.
*/
switch (cdb[0]) {
case REPORT_LUNS:
- case PERSISTENT_RESERVE_IN:
- case PERSISTENT_RESERVE_OUT:
- case RELEASE:
- case RELEASE_10:
- case RESERVE:
- case RESERVE_10:
ret = spc_parse_cdb(cmd, &dummy_size);
if (ret)
return ret;