linux-kernel - [PATCH 2/2] target: remove spin_lock_assert() in __target_(attach|detach)_tg_pt

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Message-ID: <20180323171959.7ac6klrqg4fdk3ey@linutronix.de>
Date:   Fri, 23 Mar 2018 18:19:59 +0100
From:   "bigeasy@...utronix.de" <bigeasy@...utronix.de>
To:     Linus Torvalds <torvalds@...ux-foundation.org>,
        "nab@...ux-iscsi.org" <nab@...ux-iscsi.org>
Cc:     Bart Van Assche <Bart.VanAssche@....com>,
        "acme@...nel.org" <acme@...nel.org>,
        "daniel@...stot.me" <daniel@...stot.me>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "peterz@...radead.org" <peterz@...radead.org>,
        "rostedt@...dmis.org" <rostedt@...dmis.org>,
        "tglx@...utronix.de" <tglx@...utronix.de>,
        "williams@...hat.com" <williams@...hat.com>,
        "linux-scsi@...r.kernel.org" <linux-scsi@...r.kernel.org>,
        "lclaudio@...hat.com" <lclaudio@...hat.com>,
        "target-devel@...r.kernel.org" <target-devel@...r.kernel.org>,
        "linux-rt-users@...r.kernel.org" <linux-rt-users@...r.kernel.org>
Subject: [PATCH 2/2] target: remove spin_lock_assert() in
 __target_(attach|detach)_tg_pt_gp()

__target_attach_tg_pt_gp() and __target_detach_tg_pt_gp() check if the caller
holds lun_tg_pt_gp_lock(). Both functions are static, the callers are
acquiring the lock before the invocation of the function so the check
looks superfluous.
Remove it.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
---
 drivers/target/target_core_alua.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/drivers/target/target_core_alua.c b/drivers/target/target_core_alua.c
index e46ca968009c..e5bda674bdbd 100644
--- a/drivers/target/target_core_alua.c
+++ b/drivers/target/target_core_alua.c
@@ -1843,8 +1843,6 @@ static void __target_attach_tg_pt_gp(struct se_lun *lun,
 {
 	struct se_dev_entry *se_deve;
 
-	assert_spin_locked(&lun->lun_tg_pt_gp_lock);
-
 	spin_lock(&tg_pt_gp->tg_pt_gp_lock);
 	lun->lun_tg_pt_gp = tg_pt_gp;
 	list_add_tail(&lun->lun_tg_pt_gp_link, &tg_pt_gp->tg_pt_gp_lun_list);
@@ -1868,8 +1866,6 @@ void target_attach_tg_pt_gp(struct se_lun *lun,
 static void __target_detach_tg_pt_gp(struct se_lun *lun,
 		struct t10_alua_tg_pt_gp *tg_pt_gp)
 {
-	assert_spin_locked(&lun->lun_tg_pt_gp_lock);
-
 	spin_lock(&tg_pt_gp->tg_pt_gp_lock);
 	list_del_init(&lun->lun_tg_pt_gp_link);
 	tg_pt_gp->tg_pt_gp_members--;
-- 
2.16.2