Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752957AbbFAIM4 (ORCPT ); Mon, 1 Jun 2015 04:12:56 -0400 Received: from mail-oi0-f42.google.com ([209.85.218.42]:33136 "EHLO mail-oi0-f42.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752822AbbFAILV (ORCPT ); Mon, 1 Jun 2015 04:11:21 -0400 From: "Nicholas A. Bellinger" To: target-devel Cc: linux-scsi , linux-kernel , Christoph Hellwig , Hannes Reinecke , Sagi Grimberg , "Paul E. McKenney" , Nicholas Bellinger Subject: [PATCH-v4 09/10] target: Only reset specific dynamic entries during lun_group creation Date: Mon, 1 Jun 2015 08:07:44 +0000 Message-Id: <1433146066-19798-10-git-send-email-nab@daterainc.com> X-Mailer: git-send-email 1.7.2.5 In-Reply-To: <1433146066-19798-1-git-send-email-nab@daterainc.com> References: <1433146066-19798-1-git-send-email-nab@daterainc.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3470 Lines: 88 From: Nicholas Bellinger This patch changes core_tpg_add_node_to_devs() to avoid unnecessarly resetting every se_dev_entry in se_node_acl->tpg_lun_hlist when the operation is driven by an explicit configfs se_lun->lun_group creation via core_dev_add_lun() to only update a single se_lun. Otherwise for the second core_tpg_check_initiator_node_acl() case, go ahead and continue to scan the full set of currently active se_lun in se_portal_group->tpg_lun_hlist. Reviewed-by: Hannes Reinecke Cc: Christoph Hellwig Cc: Sagi Grimberg Signed-off-by: Nicholas Bellinger --- drivers/target/target_core_device.c | 2 +- drivers/target/target_core_internal.h | 3 ++- drivers/target/target_core_tpg.c | 7 +++++-- 3 files changed, 8 insertions(+), 4 deletions(-) diff --git a/drivers/target/target_core_device.c b/drivers/target/target_core_device.c index ba8c65a..47a7360 100644 --- a/drivers/target/target_core_device.c +++ b/drivers/target/target_core_device.c @@ -1197,7 +1197,7 @@ int core_dev_add_lun( if (acl->dynamic_node_acl && (!tpg->se_tpg_tfo->tpg_check_demo_mode_login_only || !tpg->se_tpg_tfo->tpg_check_demo_mode_login_only(tpg))) { - core_tpg_add_node_to_devs(acl, tpg); + core_tpg_add_node_to_devs(acl, tpg, lun); } } mutex_unlock(&tpg->acl_node_mutex); diff --git a/drivers/target/target_core_internal.h b/drivers/target/target_core_internal.h index 2c160ce..ce80ca7 100644 --- a/drivers/target/target_core_internal.h +++ b/drivers/target/target_core_internal.h @@ -64,7 +64,8 @@ extern struct se_device *g_lun0_dev; struct se_node_acl *__core_tpg_get_initiator_node_acl(struct se_portal_group *tpg, const char *); -void core_tpg_add_node_to_devs(struct se_node_acl *, struct se_portal_group *); +void core_tpg_add_node_to_devs(struct se_node_acl *, struct se_portal_group *, + struct se_lun *); void core_tpg_wait_for_nacl_pr_ref(struct se_node_acl *); struct se_lun *core_tpg_alloc_lun(struct se_portal_group *, u32); int core_tpg_add_lun(struct se_portal_group *, struct se_lun *, diff --git a/drivers/target/target_core_tpg.c b/drivers/target/target_core_tpg.c index 73c25bd..f66c208 100644 --- a/drivers/target/target_core_tpg.c +++ b/drivers/target/target_core_tpg.c @@ -89,7 +89,8 @@ EXPORT_SYMBOL(core_tpg_get_initiator_node_acl); */ void core_tpg_add_node_to_devs( struct se_node_acl *acl, - struct se_portal_group *tpg) + struct se_portal_group *tpg, + struct se_lun *lun_orig) { u32 lun_access = 0; struct se_lun *lun; @@ -99,6 +100,8 @@ void core_tpg_add_node_to_devs( hlist_for_each_entry_rcu(lun, &tpg->tpg_lun_hlist, link) { if (lun->lun_status != TRANSPORT_LUN_STATUS_ACTIVE) continue; + if (lun_orig && lun != lun_orig) + continue; dev = lun->lun_se_dev; /* @@ -238,7 +241,7 @@ struct se_node_acl *core_tpg_check_initiator_node_acl( */ if ((tpg->se_tpg_tfo->tpg_check_demo_mode_login_only == NULL) || (tpg->se_tpg_tfo->tpg_check_demo_mode_login_only(tpg) != 1)) - core_tpg_add_node_to_devs(acl, tpg); + core_tpg_add_node_to_devs(acl, tpg, NULL); target_add_node_acl(acl); return acl; -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/