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[129.46.96.20]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-2ee38d79eb9sm2504861eec.8.2026.04.30.14.30.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 30 Apr 2026 14:30:39 -0700 (PDT) From: Jeff Johnson To: tj@kernel.org, tony.luck@intel.com, jani.nikula@linux.intel.com, ap420073@gmail.com, jv@jvosburgh.net, freude@linux.ibm.com, bcrl@kvack.org, trondmy@kernel.org, longman@redhat.com, kees@kernel.org, pengdonglin Cc: bigeasy@linutronix.de, hdanton@sina.com, paulmck@kernel.org, linux-kernel@vger.kernel.org, linux-rt-devel@lists.linux.dev, linux-nfs@vger.kernel.org, linux-aio@kvack.org, linux-fsdevel@vger.kernel.org, linux-security-module@vger.kernel.org, netdev@vger.kernel.org, intel-gfx@lists.freedesktop.org, linux-wireless@vger.kernel.org, linux-acpi@vger.kernel.org, linux-s390@vger.kernel.org, cgroups@vger.kernel.org In-Reply-To: <20250916044735.2316171-1-dolinux.peng@gmail.com> References: <20250916044735.2316171-1-dolinux.peng@gmail.com> Subject: Re: (subset) [PATCH v3 00/14] Remove redundant rcu_read_lock/unlock() in spin_lock Message-Id: <177758463946.1848985.4916088351427792183.b4-ty@oss.qualcomm.com> Date: Thu, 30 Apr 2026 14:30:39 -0700 Precedence: bulk X-Mailing-List: linux-security-module@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-Mailer: b4 0.14.3 X-Proofpoint-GUID: nmn0JyeBmfsooP-FWXVNoLAYLBREAawx X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNDMwMDIyMiBTYWx0ZWRfX8gNP6Rs3vILM 4vF5Q8X1BZCM/nnu5aeKW4Slo2r1Waz+UCxW0lF20reui7acEAA0qDy99A3RGY8Ycm1tYMyZChm PqBQI2RY+9TjbYSKttsrf0ourcro7gZ2bDVJxN8qD13dO/FmaUMHYqeIxfuIQHOnTtJT4kDmaUp KiHjV7O11IMdyK1f9m/GVNu98EPnjwPMcs+qKFt0F4GybLCRP05vtKdxHmr7Jj/b7mKZV++1hXj iLRH2UOsDM2sb0z3o7uLNLJmGliGrcSNgo6J2QwgXPhrTDnwmpyovpOmZ/q7UP2BdoVJKsJF7EN 6AKrJBQKBmqPkH6Jprt8WAPVPawS4v90gP/MOGaSyRJIa4x0otnqAnsmyuzkbIMtVgB0prH8Ygz fzY4kQFoVUi8jBVRQl2RdzCqgb2lJzvqqQpG/t3nwddcQyZxbJbHbR8my3z6FNvMffnoQB1seBo GY+O79qFVBP6GqFtQpg== X-Authority-Analysis: v=2.4 cv=UcxhjqSN c=1 sm=1 tr=0 ts=69f3ca01 cx=c_pps a=cFYjgdjTJScbgFmBucgdfQ==:117 a=ouPCqIW2jiPt+lZRy3xVPw==:17 a=IkcTkHD0fZMA:10 a=A5OVakUREuEA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=DJpcGTmdVt4CTyJn9g5Z:22 a=EUspDBNiAAAA:8 a=R8he2_Gm4Sd0DFq6ycoA:9 a=QEXdDO2ut3YA:10 a=scEy_gLbYbu1JhEsrz4S:22 X-Proofpoint-ORIG-GUID: nmn0JyeBmfsooP-FWXVNoLAYLBREAawx X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-04-30_06,2026-04-30_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 bulkscore=0 clxscore=1011 lowpriorityscore=0 malwarescore=0 impostorscore=0 adultscore=0 spamscore=0 phishscore=0 priorityscore=1501 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2604200000 definitions=main-2604300222 On Tue, 16 Sep 2025 12:47:21 +0800, pengdonglin wrote: > Since commit a8bb74acd8efe ("rcu: Consolidate RCU-sched update-side function definitions") > there is no difference between rcu_read_lock(), rcu_read_lock_bh() and > rcu_read_lock_sched() in terms of RCU read section and the relevant grace > period. That means that spin_lock(), which implies rcu_read_lock_sched(), > also implies rcu_read_lock(). > > There is no need no explicitly start a RCU read section if one has already > been started implicitly by spin_lock(). > > [...] Applied, thanks! [14/14] wifi: ath9k: Remove redundant rcu_read_lock/unlock() in spin_lock commit: c4f518736472c8cfbf1d304e01c631babd2bbf34 Best regards, -- Jeff Johnson