From a3785c8740c5b56b49ec336b59be996393d83332 Mon Sep 17 00:00:00 2001 From: Nicholas Bellinger Date: Wed, 30 May 2012 14:47:18 -0700 Subject: [PATCH] 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 Signed-off-by: Nicholas Bellinger --- drivers/target/target_core_pscsi.c | 12 +++--------- 1 file changed, 3 insertions(+), 9 deletions(-) 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 @@ static int pscsi_parse_cdb(struct se_cmd *cmd) 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; -- 2.7.4