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[192.243.127.228]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-7cd9ad7db5fsm111843a12.92.2024.08.21.16.06.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 21 Aug 2024 16:06:24 -0700 (PDT) From: Woody Zhang To: Thomas Gleixner , Andrew Morton Cc: linux-kernel@vger.kernel.org, Woody Zhang Subject: [PATCH 3/5] list_bl: remove lock check in hlist_bl_set_first Date: Thu, 22 Aug 2024 07:05:37 +0800 Message-ID: <20240821230539.168107-4-woodyzhang666@gmail.com> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20240821230539.168107-1-woodyzhang666@gmail.com> References: <20240821230539.168107-1-woodyzhang666@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" This allows it to be used in situations when locking is not required, e.g. in early initialization phase. Signed-off-by: Woody Zhang --- include/linux/list_bl.h | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/include/linux/list_bl.h b/include/linux/list_bl.h index 7ce411567fe5..d25c659f6635 100644 --- a/include/linux/list_bl.h +++ b/include/linux/list_bl.h @@ -63,10 +63,9 @@ static inline struct hlist_bl_node *hlist_bl_first(struc= t hlist_bl_head *h) static inline void hlist_bl_set_first(struct hlist_bl_head *h, struct hlist_bl_node *n) { - LIST_BL_BUG_ON((unsigned long)n & LIST_BL_LOCKMASK); - LIST_BL_BUG_ON(((unsigned long)h->first & LIST_BL_LOCKMASK) !=3D - LIST_BL_LOCKMASK); - h->first =3D (struct hlist_bl_node *)((unsigned long)n | LIST_BL_LOCKMASK= ); + LIST_BL_BUG_ON((uintptr_t)n & LIST_BL_LOCKMASK); + h->first =3D (struct hlist_bl_node *) + ((uintptr_t)n | ((uintptr_t)h->first & LIST_BL_LOCKMASK)); } =20 static inline bool hlist_bl_empty(const struct hlist_bl_head *h) --=20 2.45.2